ISO 19408:2023
(Main)Footwear — Sizing — Vocabulary
Footwear — Sizing — Vocabulary
ISO/TS 19408:2015 defines terms commonly used for measuring feet and lasts and for determining the size of footwear. This vocabulary complements ISO 19952, Footwear ? Vocabulary. The term "shoe" means all types of footwear.
Chaussures — Pointures — Vocabulaire
Le présent document définit les termes couramment utilisés pour mesurer les pieds et les formes et pour déterminer la pointure des chaussures. Le présent document vient compléter l’ISO 19952.
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INTERNATIONAL ISO
STANDARD 19408
First edition
2023-04
Footwear — Sizing — Vocabulary
Chaussures — Pointures — Vocabulaire
Reference number
ISO 19408:2023(E)
© ISO 2023
---------------------- Page: 1 ----------------------
ISO 19408:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
© ISO 2023 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 19408:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Foot dimensions and shoe sizing . 1
3.2 Last dimensions . 4
Annex A (informative) Figures . 7
Bibliography .18
Index .19
iii
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---------------------- Page: 3 ----------------------
ISO 19408:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 137, Footwear sizing designations and
marking systems.
This first edition of ISO 19408 cancels and replaces ISO/TS 19408:2015, which has been technically
revised.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
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---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 19408:2023(E)
Footwear — Sizing — Vocabulary
1 Scope
This document defines terms commonly used for measuring feet and lasts and for determining the size
of footwear.
This document complements ISO 19952.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1 Foot dimensions and shoe sizing
3.1.1
central line of foot
line that connects the centre of the back of the heel (maximum point of the heel curve) and a point in the
forefoot area
Note 1 to entry: See Figure A.1 c) and d), and Figure A.5 b).
Note 2 to entry: There are two methods to define the point in the forefoot:
— Method 1: at the end of the second toe;
— Method 2: in the middle of the tread width of the foot (3.1.15).
3.1.2
design allowance
additional allowance to the effective shoe length (3.1.3) added to the forefoot area of the last
Note 1 to entry: See Figure A.2.
3.1.3
effective shoe length
distance of the foot length (3.1.4) including a toe allowance (3.2.16)
Note 1 to entry: See Figures A.2 and A.3.
3.1.4
foot length
maximum horizontal distance from the centre of the back of the heel (maximum point of heel curve)
to the end of the most prominent toe, with the subject standing with the weight of the body equally
distributed on both feet, barefoot or wearing thin hose that does not significantly affect the dimensions
of the foot
Note 1 to entry: There are different methods to measure the foot length:
1
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ISO 19408:2023(E)
— Method 1: it is measured along the inside tangent (3.1.6) (see Figure A.1 a) and b);
— Method 2: it is measured parallel to the central line of foot (3.1.1). There are two methods of measuring the
central line (method 2 a and 2 b). See Figure A.1 a), c) and d).
3.1.5
heel height of shoe
vertical height of the extreme rear end of the heel of the shoe down to the ground plane
Note 1 to entry: See Figure A.3.
3.1.6
inside tangent
vertical plane tangential to the point of maximum inside heel swell and the point of maximum swell at
the first metatarsal head
Note 1 to entry: See Figure A.1 b) and Figure A.5a).
3.1.7
instep point of foot
intersection of the vertical (normal) plane at a given percentage of foot length with the highest point on
the upper (dorsal) surface of the foot
Note 1 to entry: See Figure A.16.
Note 2 to entry: There are different percentages used to mark the instep point:
— Method 1: 50 % of foot length;
— Method 2: 55 % of foot length.
3.1.8
joint girth of the foot
anatomic ball girth of the foot
circumference of the foot in a vertical plane around the heads of the first and fifth metatarsal bones
Note 1 to entry: Measurement is made under the same conditions as foot length (3.1.4).
Note 2 to entry: See Figure A.4.
3.1.9
length grading interval
difference between adjacent whole shoe sizes
3.1.10
linear width
maximum horizontal distance, o, between the outside swell of the head of the first metatarsal and
outside swell of the head of the fifth metatarsal of the foot (see Figure A.12) or the corresponding points
at the last
Note 1 to entry: Measurement of the foot is made under the same conditions as foot length (3.1.4). There are two
methods to obtain the first and fifth metatarsal head points:
— Method 1: the inside tangent (3.1.6) and the parallel line touching the fifth metatarsal [see Figure A.5 a)];
— Method 2: the inside and outside tangent lines which are parallel with the central line of foot (3.1.1) touching
the two points [see Figure A.5 b)].
3.1.11
shoe size
designated size marking of a shoe or last made for a given foot length (3.1.4) in any given shoe sizing
system
2
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ISO 19408:2023(E)
3.1.12
shoe width
designated marking indicating the joint/ball girth or width fitting of the footwear or last, usually based
on the joint girth or width measurement of the last
Note 1 to entry: Designation can be by letters, e.g. A, B, C, or numbers, e.g.1, 2, 3.
3.1.13
stick width of the foot
linear width
perpendicular distance between the first metatarsal head and the fifth metatarsal head
Note 1 to entry: See Figure A.12.
Note 2 to entry: Measurement is made under the same conditions as foot length (3.1.4). There are two methods to
obtain the first and fifth metatarsal head points:
— Method 1: the inside tangent (3.1.6) and the parallel line touching the fifth metatarsal [see Figure A.5 a)];
— Method 2: the inside and outside tangent lines which are parallel with the central line of foot (3.1.1) touching
the two points. There are two methods of central line (method 2 a and 2 b) [see Figure A.5 b)].
3.1.14
width grading interval
difference between adjacent girth or width fittings within the same shoe size or from shoe size to shoe
size
3.1.15
tread width of ball area of foot
distance b between the maximum swell of the first metatarsal as a point of the foot line touching the
ground and the maximum swell of the fifth metatarsal as a point of the foot line touching the ground
Note 1 to entry: See Figures A.5 and A.12.
3.1.16
long heel girth of foot
circumference around the foot passing through the point at the back of the heel where the foot just
touches the ground on which the foot stands and the instep point of foot (3.1.7)
Note 1 to entry: See Figure A.16.
3.1.17
ankle girth
smallest horizontal girth, i, at the lower leg over the malleolus
Note 1 to entry: See Figure A.16.
3.1.18
calf girth
maximum horizontal girth, u, in the calf area of lower leg
Note 1 to entry: See Figure A.16.
3.1.19
under knee girth
smallest horizontal girth, w, below the knee and above calf
Note 1 to entry: See Figur
...
NORME ISO
INTERNATIONALE 19408
Première édition
2023-04
Chaussures — Pointures —
Vocabulaire
Footwear — Sizing — Vocabulary
Numéro de référence
ISO 19408:2023(F)
© ISO 2023
---------------------- Page: 1 ----------------------
ISO 19408:2023(F)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2023
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: +41 22 749 01 11
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse
ii
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ISO 19408:2023(F)
Sommaire Page
Avant-propos .iv
1 Domaine d’application . 1
2 Références normatives .1
3 Termes et définitions . 1
3.1 Dimensions du pied et pointure de la chaussure . 1
3.2 Dimensions de la forme . 4
Annexe A (informative) Figures . 8
Bibliographie .19
Index .20
iii
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ISO 19408:2023(F)
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes
nationaux de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est
en général confiée aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude
a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec l'ISO participent également aux travaux.
L'ISO collabore étroitement avec la Commission électrotechnique internationale (IEC) en ce qui
concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents
critères d'approbation requis pour les différents types de documents ISO. Le présent document a
été rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir
www.iso.org/directives).
L'attention est attirée sur le fait que certains des éléments du présent document peuvent faire l'objet de
droits de propriété intellectuelle ou de droits analogues. L'ISO ne saurait être tenue pour responsable
de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant
les références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de
l'élaboration du document sont indiqués dans l'Introduction et/ou dans la liste des déclarations de
brevets reçues par l'ISO (voir www.iso.org/brevets).
Les appellations commerciales éventuellement mentionnées dans le présent document sont données
pour information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un
engagement.
Pour une explication de la nature volontaire des normes, la signification des termes et expressions
spécifiques de l'ISO liés à l'évaluation de la conformité, ou pour toute information au sujet de l'adhésion
de l'ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles
techniques au commerce (OTC), voir www.iso.org/avant-propos.
Le présent document a été élaboré par le comité technique ISO/TC 137, Désignation de mesurage et
systèmes de marquage pour les souliers.
Cette première édition de l'ISO 19408 annule et remplace l'ISO/TS 19408:2015, qui a fait l'objet d'une
révision technique.
Il convient que l’utilisateur adresse tout retour d’information ou toute question concernant le présent
document à l’organisme national de normalisation de son pays. Une liste exhaustive desdits organismes
se trouve à l’adresse www.iso.org/fr/members.html.
iv
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NORME INTERNATIONALE ISO 19408:2023(F)
Chaussures — Pointures — Vocabulaire
1 Domaine d’application
Le présent document définit les termes couramment utilisés pour mesurer les pieds et les formes et
pour déterminer la pointure des chaussures.
Le présent document vient compléter l’ISO 19952.
2 Références normatives
Le présent document ne contient aucune référence normative.
3 Termes et définitions
L’ISO et l’IEC tiennent à jour des bases de données terminologiques destinées à être utilisées en
normalisation, consultables aux adresses suivantes:
— ISO Online browsing platform: disponible à l’adresse https:// www .iso .org/ obp
— IEC Electropedia: disponible à l’adresse https:// www .electropedia .org/
3.1 Dimensions du pied et pointure de la chaussure
3.1.1
ligne centrale du pied
ligne reliant le centre de la face postérieure du talon (point maximal de la courbe arrière) et un point
situé au niveau de la partie antérieure du pied
Note 1 à l'article: Voir Figure A.1 c) et d), et Figure A.5 b).
Note 2 à l'article: Il existe deux méthodes pour définir le point situé au niveau de la partie antérieure du pied:
— Méthode 1: à l’extrémité du deuxième orteil;
— Méthode 2: au milieu de la largeur à l’articulation métatarsophalangienne du pied (3.1.15).
3.1.2
supplément esthétique
supplément de longueur par rapport à la longueur chaussante (3.1.3) ajouté à la partie antérieure de la
forme
Note 1 à l'article: Voir Figure A.2.
3.1.3
longueur chaussante
distance constituée de la longueur du pied (3.1.4) et d'un supplément chaussant (3.2.16)
Note 1 à l'article: Voir Figures A.2 et A.3.
1
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ISO 19408:2023(F)
3.1.4
longueur du pied
distance horizontale maximale entre le centre de la face postérieure du talon (point maximal de
la courbe arrière) et l’extrémité du plus long orteil, le sujet se tenant debout, pieds nus ou avec des
chaussettes fines ne modifiant pas sensiblement les dimensions du pied, le poids du corps uniformément
réparti sur les deux pieds
Note 1 à l'article: Il existe différentes méthodes pour mesurer la longueur du pied:
— Méthode 1: mesure le long de la tangente intérieure (3.1.6) [voir Figure A.1 a) et b)];
— Méthode 2: mesure parallèle à la ligne centrale du pied (3.1.1). Il existe deux méthodes pour mesurer la ligne
centrale (méthodes 2 a et 2 b). Voir Figure A.1 a), c) et d).
3.1.5
hauteur talon de la chaussure
hauteur de l’extrémité arrière du talon de la chaussure par rapport au sol
Note 1 à l'article: Voir Figure A.3.
3.1.6
tangente intérieure
plan vertical tangent au point de renflement intérieur maximal du talon et au point de renflement
maximal au niveau de la première tête métatarsienne
Note 1 à l'article: Voir Figure A.1 b) et Figure A.5 a).
3.1.7
cou-de-pied
intersection du plan vertical (normal) au niveau d’un pourcentage donné de longueur du pied avec le
point le plus élevé de la face supérieure (dorsale) du pied
Note 1 à l'article: Voir Figure A.16.
Note 2 à l'article: Différents pourcentages sont utilisés pour repérer le cou-de-pied:
— Méthode 1: 50 % de la longueur du pied;
— Méthode 2: 55 % de la longueur du pied.
3.1.8
périmètre à l’articulation métatarsophalangienne
périmètre anatomique à l’articulation métatarsophalangienne
circonférence du pied dans un plan vertical autour des têtes des premier et cinquième os métatarsiens
Note 1 à l'article: Le mesurage s’effectue dans les mêmes conditions que pour la longueur du pied (3.1.4).
Note 2 à l'article: Voir Figure A.4.
3.1.9
pas de longueur
différence entre pointures entières adjacentes
3.1.10
largeur linéaire
distance horizontale maximale, o, entre le renflement extérieur de la tête du premier et du cinquième
métatarse du pied (voir Figure A.12) ou les points correspondants de la forme
Note 1 à l'article: Le mesurage du pied s’effectue dans les mêmes conditions que pour la longueur du pied (3.1.4). Il
existe deux méthodes pour obtenir les points des première et cinquième têtes métatarsiennes:
— Méthode 1: la tangente intérieure (3.1.6) et la ligne parallèle touchent le cinquième métatarse [voir Figure A.5 a)];
2
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ISO 19408:2023(F)
— Méthode 2: les lignes tangentes intérieures et extérieures qui sont parallèles à la ligne centrale du pied (3.1.1)
touchent les deux points [voir Figure A.5 b)].
3.1.11
pointure
indication de la taille d’une chaussure ou d’une forme pour une longueur de pied (3.1.4) donnée dans un
système donné de détermination de la pointure d’une chaussure
3.1.12
largeur de chaussure
désignation indiquant le périmètre à l’articulation métatarsophalangienne ou la largeur chaussante
de la chaussure ou de la forme, généralement fondée sur la mesure du périmètre à l’articulation
métatarsophalangienne ou de la dimension de la forme en largeur
Note 1 à l'article: La désignation peut prendre la forme de lettres (par exemple, A, B, C) ou de numéros
(par exemple, 1, 2, 3).
3.1.13
largeur du pied
largeur linéaire
distance perpendiculaire entre la première et la cinquième tête métatarsienne
Note 1 à l'article: Voir Figure A.12.
Note 2 à l'article: Le mesurage s’effectue dans les mêmes conditions que pour la longueur du pied (3.1.4). Il existe
deux méthodes pour obtenir les points des première et cinquième têtes métatarsiennes:
— Méthode 1: la tangente intérieure (3.1.6) et la ligne parallèle touchent le cinquième métatarse [voir Figure A.5 a)];
— Méthode 2: les lignes tangentes intérieures et extérieures qui sont parallèles à la ligne centrale du pied
(3.1.1) touchent les deux points. Il existe deux méthodes pour la ligne centrale (méthodes 2 a et 2 b) [voir
Figure A.5 b)].
3.1.14
pas de largeur
différence entre des périmètres ou largeurs chaussantes adjacentes dans une même pointure ou d’une
pointure à une autre
3.1.15
largeur à l’articulation métatarsophalangienne du pied
distance b entre le renflement maximal du premier et du cinquième métatarse comme point de la ligne
du pied qui touche le sol
Note 1 à l'article: Voir Figures A.5 et A.12.
3.1.16
périmètre d’entrée au cou-de-pied
circonférence du pied passant par le point, sur la face postérieure du talon, où le pied touche le sol et par
le cou-de-pied (3.1.7)
Note 1 à l'article: Voir Figure A.16.
3.1.17
périmètre de la cheville
plus petite circonférence horizontale, i, à la base de la jambe, au-dessus des malléoles
Note 1 à l'article: Voir Figure A.16.
3.1.18
périmètre du mollet
circonférence horizontale maximale, u, au niveau du mollet
Note 1 à l'article: Voir Figure A.16.
3
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ISO 19408:2023(F)
3.1.19
périmètre de la jambe au-dessous du genou
plus petite circonférence horizontale, w, entre le genou et le mollet
Note 1 à l'article: Voir Figure A.16.
3.1.20
périmètre d’entrée cheville
plus petite circonférence, t , du pied passant par le point situé sur la face postérieure du talon, où le pied
1
touche le sol, et le point le plus creux au niveau du raccord cheville
...
INTERNATIONAL ISO
STANDARD 19408
First edition
Footwear — Sizing — Vocabulary
Chaussures — Pointures — Vocabulaire
PROOF/ÉPREUVE
Reference number
ISO 19408:2023(E)
© ISO 2023
---------------------- Page: 1 ----------------------
ISO 19408:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
PROOF/ÉPREUVE © ISO 2023 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 19408:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Foot dimensions and shoe sizing . 1
3.2 Last dimensions . 4
Annex A (informative) Figures . 7
Bibliography .18
Index .19
iii
© ISO 2023 – All rights reserved PROOF/ÉPREUVE
---------------------- Page: 3 ----------------------
ISO 19408:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 137, Footwear sizing designations and
marking systems.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
PROOF/ÉPREUVE © ISO 2023 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 19408:2023(E)
Footwear — Sizing — Vocabulary
1 Scope
This document defines terms commonly used for measuring feet and lasts and for determining the size
of footwear.
This document complements ISO 19952.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1 Foot dimensions and shoe sizing
3.1.1
central line of foot
line that connects the centre of the back of the heel (maximum point of the heel curve) and a point in the
forefoot area
Note 1 to entry: See Figure A.1 c) and d), and Figure A.5 b).
Note 2 to entry: There are two methods to define the point in the forefoot:
— Method 1: at the end of the second toe;
— Method 2: in the middle of the tread width of the foot (3.1.15).
3.1.2
design allowance
additional allowance to the effective shoe length (3.1.3) added to the forefoot area of the last
Note 1 to entry: See Figure A.2.
3.1.3
effective shoe length
distance of the foot length (3.1.4) including a toe allowance (3.2.16)
Note 1 to entry: See Figures A.2 and A.3.
3.1.4
foot length
maximum horizontal distance from the centre of the back of the heel (maximum point of heel curve)
to the end of the most prominent toe, with the subject standing with the weight of the body equally
distributed on both feet, barefoot or wearing thin hose that does not significantly affect the dimensions
of the foot
Note 1 to entry: There are different methods to measure the foot length:
1
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ISO 19408:2023(E)
— Method 1: it is measured along the inside tangent (3.1.6) (see Figure A.1 a) and b);
— Method 2: it is measured parallel to the central line of foot (3.1.1). There are two methods of measuring the
central line (method 2 a and 2 b). See Figure A.1 a), c) and d).
3.1.5
heel height of shoe
vertical height of the extreme rear end of the heel of the shoe down to the ground plane
Note 1 to entry: See Figure A.3.
3.1.6
inside tangent
vertical plane tangential to the point of maximum inside heel swell and the point of maximum swell at
the first metatarsal head
Note 1 to entry: See Figure A.1 b) and Figure A.5a).
3.1.7
instep point of foot
intersection of the vertical (normal) plane at a given percentage of foot length with the highest point on
the upper (dorsal) surface of the foot
Note 1 to entry: See Figure A.16.
Note 2 to entry: There are different percentages used to mark the instep point:
— Method 1: 50 % of foot length;
— Method 2: 55 % of foot length.
3.1.8
joint girth of the foot
anatomic ball girth of the foot
circumference of the foot in a vertical plane around the heads of the first and fifth metatarsal bones
Note 1 to entry: Measurement is made under the same conditions as foot length (3.1.4).
Note 2 to entry: See Figure A.4.
3.1.9
length grading interval
difference between adjacent whole shoe sizes
3.1.10
linear width
maximum horizontal distance, o, between the outside swell of the head of the first metatarsal and
outside swell of the head of the fifth metatarsal of the foot (see Figure A.12) or the corresponding points
at the last
Note 1 to entry: Measurement of the foot is made under the same conditions as foot length (3.1.4). There are two
methods to obtain the first and fifth metatarsal head points:
— Method 1: the inside tangent (3.1.6) and the parallel line touching the fifth metatarsal [see Figure A.5 a)];
— Method 2: the inside and outside tangent lines which are parallel with the central line of foot (3.1.1) touching
the two points [see Figure A.5 b)].
3.1.11
shoe size
designated size marking of a shoe or last made for a given foot length (3.1.4) in any given shoe sizing
system
2
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ISO 19408:2023(E)
3.1.12
shoe width
designated marking indicating the joint/ball girth or width fitting of the footwear or last, usually based
on the joint girth or width measurement of the last
Note 1 to entry: Designation can be by letters, e.g. A, B, C, or numbers, e.g.1, 2, 3.
3.1.13
stick width of the foot
linear width
perpendicular distance between the first metatarsal head and the fifth metatarsal head
Note 1 to entry: See Figure A.12.
Note 2 to entry: Measurement is made under the same conditions as foot length (3.1.4). There are two methods to
obtain the first and fifth metatarsal head points:
— Method 1: the inside tangent (3.1.6) and the parallel line touching the fifth metatarsal [see Figure A.5 a)];
— Method 2: the inside and outside tangent lines which are parallel with the central line of foot (3.1.1) touching
the two points. There are two methods of central line (method 2 a and 2 b) [see Figure A.5 b)].
3.1.14
width grading interval
difference between adjacent girth or width fittings within the same shoe size or from shoe size to shoe
size
3.1.15
tread width of ball area of foot
distance b between the maximum swell of the first metatarsal as a point of the foot line touching the
ground and the maximum swell of the fifth metatarsal as a point of the foot line touching the ground
Note 1 to entry: See Figures A.5 and A.12.
3.1.16
long heel girth of foot
circumference around the foot passing through the point at the back of the heel where the foot just
touches the ground on which the foot stands and the instep point of foot (3.1.7)
Note 1 to entry: See Figure A.16.
3.1.17
ankle girth
smallest horizontal girth, i, at the lower leg over the malleolus
Note 1 to entry: See Figure A.16.
3.1.18
calf girth
maximum horizontal girth, u, in the calf area of lower leg
Note 1 to entry: See Figure A.16.
3.1.19
under knee girth
smallest horizontal girth, w, below the knee and above calf
Note 1 to entry: See Figure A.16.
3
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ISO 19408:2
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ISO 19408:20222023(E) Style Definition:
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ISO TC 137
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DATE: 2023-xx
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Secretariat: SABS
ANNEX
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Footwear — Sizing — Vocabulary
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Chaussures — Pointures — Vocabulaire
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ISO 19408:20222023(E)
© ISO 20222023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of
this publication may be reproduced or utilized otherwise in any form or by any means, electronic or
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© ISO 20222023 – All rights reserved
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ISO 19408:20222023(E)
Contents Page
Foreword . Error! Bookmark not defined.
1 Scope . Error! Bookmark not defined.
2 Terms and definitions . Error! Bookmark not defined.
2.1 Foot dimensions and shoe sizing . Error! Bookmark not defined.
2.2 Last dimensions . Error! Bookmark not defined.
Annex A (informative) Figures . Error! Bookmark not defined.
Foreword . 4
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Foot dimensions and shoe sizing . 1
3.2 Last dimensions . 4
Annex A (informative) Figures . 8
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ISO 19408:20222023(E)
Foreword
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The committee responsible for thisThis document iswas prepared by Technical Committee ISO/TC 137,
Footwear sizing designations and marking systems.
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© ISO 20222023 – All rights reserved
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INTERNATIONAL STANDARD ISO 19408:20222023(E)
Footwear — Sizing — Vocabulary
1 Scope
This document defines terms commonly used for measuring feet and lasts and for determining the size
of footwear.
This document complements ISO 19952.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obphttps://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/https://www.electropedia.org/
3.1 Foot dimensions and shoe sizing
3.1.1
central line of foot
line that connects the centre of the back of the heel (maximum point of the heel curve) and a point in the
forefoot area
Note 1 to entry: See Figure A.1 c) and d), and Figure A.5 b).
Note 2 to entry: There are two methods to define the point in the forefoot:
— Method 1: at the end of the second toe;
— Method 2: in the middle of the tread width of the foot (3.1.15).
3.1.2
design allowance
additional allowance to the effective shoe length (3.1.3) added to the forefoot area of the last
Note 1 to entry: See Figure A.2.
3.1.3
effective shoe length
distance of the foot length (3.1.4) including a toe allowance (3.2.16)
Note 1 to entry: See Figures A.2 and A.3.
3.1.4
foot length
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ISO 19408:20222023(E)
maximum horizontal distance from the centre of the back of the heel (maximum point of heel curve) to
the end of the most prominent toe, with the subject standing with the weight of the body equally
distributed on both feet, barefoot or wearing thin hose that does not significantly affect the dimensions
of the foot
Note 1 to entry: There are different methods to measure the foot length:
— Method 1: it is measured along the inside tangent (3.1.6) (see Figure A.1 a) and b);
— Method 2: it is measured parallel to the central line of foot (3.1.1). There are two methods of measuring the
central line (method 2a2 a and 2b2 b). See Figure A.1a1 a), c) and d).
3.1.5
heel height of shoe
vertical height of the extreme rear end of the heel of the shoe down to the ground plane
Note 1 to entry: See Figure A.3.
3.1.6
inside tangent
vertical plane tangential to the point of maximum inside heel swell and the point of maximum swell at
the first metatarsal head
Note 1 to entry: See Figure A.1 b) and Figure A.5a).
3.1.7
instep point of foot
intersection of the vertical (normal) plane at a given percentage of foot length with the highest point on
the upper (dorsal) surface of the foot
Note 1 to entry: See Figure A.16.
Note 2 to entry: There are different percentages used to mark the instep point:
— Method 1: 50 % of foot length;
— Method 2: 55 % of foot length.
3.1.8
joint girth of the foot
anatomic ball girth of the foot
circumference of the foot in a vertical plane around the heads of the first and fifth metatarsal bones
Note 1 to entry: Measurement is made under the same conditions as foot length (3.1.4).
Note 2 to entry: See Figure A.4.
3.1.9
length grading interval
difference between adjacent whole shoe sizes
3.1.10
linear width
maximum horizontal distance, o, between the outside swell of the head of the first metatarsal and outside
swell of the head of the fifth metatarsal of the foot (see Figure A.12) or the corresponding points at the
last
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ISO 19408:20222023(E)
Note 1 to entry: Measurement of the foot is made under the same conditions as foot length (3.1.4). There are two
methods to obtain the first and fifth metatarsal head points:
— Method 1: the inside tangent (3.1.6) and the parallel line touching the fifth metatarsal [see Figure A.5 a)];
— Method 2: the inside and outside tangent lines which are parallel with the central line of foot (3.1.1) touching
the two points [see Figure A.5 b)].
3.1.11
shoe size
designated size marking of a shoe or last made for a given foot length (3.1.4) in any given shoe sizing
system
3.1.12
shoe width
designated marking indicating the joint/ball girth or width fitting of the footwear or last, usually based
on the joint girth or width measurement of the last
Note 1 to entry: Designation can be by letters, e.g. A, B, C, or numbers, e.g.1, 2, 3.
3.1.13
stick width of the foot
linear width
perpendicular distance between the first metatarsal head and the fifth metatarsal head
Note 1 to entry: See Figure A.12.
Note 2 to entry: Measurement is made under the same conditions as foot length (3.1.4). There are two methods to
obtain the first and fifth metatarsal head points:
— Method 1: the inside tangent (3.1.6) and the parallel line touching the fifth metatarsal [see Figure A.5 a)];
— Method 2: the inside and outside tangent lines which are parallel with the central line of foot (3.1.1) touching
the two points. There are two methods of central line (method 2a2 a and 2b2 b) [see Figure A.5 b)].
3.1.14
width grading interval
difference between adjacent girth or width fittings within the same shoe size or from shoe size to shoe
size
3.1.15
tread width of ball area of foot
distance b between the maximum swell of the first metatarsal as a point of the foot line touching the
ground and the maximum swell of the fifth metatarsal as a point of the foot line touching the ground
Note 1 to entry: See Figures A.5 and A.12.
3.1.16
long heel girth of foot
circumference around the foot passing through the point at the back of the heel where the foot just
touches the ground on which the foot stands and the instep point of foot (3.1.7)
Note 1 to entry: See Figure A.16.
3.1.17
ankle girth
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ISO 19408:20222023(E)
smallest horizontal girth, i, at the lower leg over the malleolus
Note 1 to entry: See Figure A.16.
3.1.18
calf girth
maximum horizontal girth, u, in the calf area of lower leg
Note 1 to entry: See Figure A.16.
3.1.19
under knee girth
smallest horizontal girth, w, below the knee and above calf
Note 1 to entry: See Figure A.16.
3.1.20
short heel girth of foot
shortest circumference, t1, around the foot passing through the point at the back of the heel where the
foot just touches surface on which the foot stands
Note 1 to entry: See Figure A.16.
3.1.21
shoe
pair of coverings for the feet usually made of a strong material.
3.2 Last dimensions
3.2.1
bottom pattern lengt
...
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