This document gives names, symbols, definitions and units for quantities of space and time. Where
appropriate, conversion factors are also given.

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This document gives names, symbols and definitions for characteristic numbers used in the description
of transport and transfer phenomena.

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This document gives names, symbols, definitions and units for quantities used for light and optical radiation in the wavelength range of approximately 1 nm to 1 mm. Where appropriate, conversion factors are also given.

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  • Standard
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  • Draft
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EN-ISO 80000-8 gives names, symbols, definitions and units for quantities of acoustics. Where appropriate, conversion factors are also given.

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This document gives names, symbols, definitions and units for quantities of acoustics. Where appropriate, conversion factors are also given.

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This document gives names, symbols, definitions and units for quantities of acoustics. Where appropriate, conversion factors are also given.

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This document gives names, symbols, definitions and units for quantities of acoustics. Where appropriate, conversion factors are also given.

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This document gives names, symbols, definitions and units for quantities used in atomic and nuclear
physics. Where appropriate, conversion factors are also given.

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    53 pages
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This document gives names, symbols, definitions and units for quantities of physical chemistry and
molecular physics. Where appropriate, conversion factors are also given.

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This document gives names, symbols, definitions and units for quantities of thermodynamics. Where
appropriate, conversion factors are also given.

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This document gives names, symbols, definitions and units for quantities of mechanics. Where
appropriate, conversion factors are also given.

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This document specifies mathematical symbols, explains their meanings, and gives verbal equivalents
and applications.
This document is intended mainly for use in the natural sciences and technology, but also applies to
other areas where mathematics is used.

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This document gives names, symbols, definitions and units for quantities of condensed matter physics.
Where appropriate, conversion factors are also given.

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This document gives names, symbols and definitions for characteristic numbers used in the description of transport and transfer phenomena.

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This document gives names, symbols, definitions and units for quantities of space and time. Where appropriate, conversion factors are also given.

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ISO 80000-11:2019 gives names, symbols and definitions for characteristic numbers used in the description of transport and transfer phenomena.

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ISO 80000-3:2019 gives names, symbols, definitions and units for quantities of space and time. Where appropriate, conversion factors are also given.

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This document gives names, symbols, definitions and units for quantities of mechanics. Where appropriate, conversion factors are also given.

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This document specifies mathematical symbols, explains their meanings, and gives verbal equivalents and applications.
This document is intended mainly for use in the natural sciences and technology, but also applies to other areas where mathematics is used.

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This document gives names, symbols, definitions and units for quantities used in atomic and nuclear physics. Where appropriate, conversion factors are also given.

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This document gives names, symbols, definitions and units for quantities of condensed matter physics. Where appropriate, conversion factors are also given.

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This document gives names, symbols, definitions and units for quantities of physical chemistry and molecular physics. Where appropriate, conversion factors are also given.

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This document gives names, symbols, definitions and units for quantities of thermodynamics. Where appropriate, conversion factors are also given.

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This document gives names, symbols, definitions and units for quantities used in atomic and nuclear physics. Where appropriate, conversion factors are also given.

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This document gives names, symbols, definitions and units for quantities used for light and optical radiation in the wavelength range of approximately 1 nm to 1 mm. Where appropriate, conversion factors are also given.

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  • Draft
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This document gives names, symbols, definitions and units for quantities of thermodynamics. Where appropriate, conversion factors are also given.

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This document gives names, symbols, definitions and units for quantities of mechanics. Where appropriate, conversion factors are also given.

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This document gives names, symbols, definitions and units for quantities used in atomic and nuclear physics. Where appropriate, conversion factors are also given.

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    45 pages
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    44 pages
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This document gives names, symbols, definitions and units for quantities used for light and optical radiation in the wavelength range of approximately 1 nm to 1 mm. Where appropriate, conversion factors are also given.

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    34 pages
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This document gives names, symbols, definitions and units for quantities of mechanics. Where appropriate, conversion factors are also given.

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    15 pages
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This document specifies mathematical symbols, explains their meanings, and gives verbal equivalents and applications. This document is intended mainly for use in the natural sciences and technology, but also applies to other areas where mathematics is used.

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    37 pages
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  • Standard
    35 pages
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This document specifies mathematical symbols, explains their meanings, and gives verbal equivalents and applications.
This document is intended mainly for use in the natural sciences and technology, but also applies to other areas where mathematics is used.

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    37 pages
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This document gives names, symbols, definitions and units for quantities of condensed matter physics. Where appropriate, conversion factors are also given.

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    15 pages
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    16 pages
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This document gives names, symbols, definitions and units for quantities of thermodynamics. Where appropriate, conversion factors are also given.

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This document gives names, symbols, definitions and units for quantities of physical chemistry and molecular physics. Where appropriate, conversion factors are also given.

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    17 pages
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    17 pages
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This document gives names, symbols, definitions and units for quantities of physical chemistry and molecular physics. Where appropriate, conversion factors are also given.

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This document gives names, symbols, definitions and units for quantities of condensed matter physics. Where appropriate, conversion factors are also given.

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Defines rules for the use and writing of letter symbols for telecommunications and electronics.

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IEC 60027-2:2019 is applicable to telecommunications and electronics. It gives names and symbols for quantities and their units.

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    149 pages
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IEC 60375:2018 specifies the rules for signs and reference directions and reference polarities for electric currents and voltages in electric networks.

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This International Standard defines physical quantities used in the field thermal performance of
buildings and building elements, and gives the corresponding Symbols and units.
NOTE Because the scope of this International Standard is restricted to thermal performance and energy use
in the built environment, some of the definitions given in clause 2 differ from those given ISO 80000-5 Quantities
and units - Part 5: Thermodynamics (ISO 80000-5:2007).

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IEC 60375:2018 specifies the rules for signs and reference directions and reference polarities for electric currents and voltages in electric networks.

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ISO 7345:2018 defines physical quantities used in the thermal performance of buildings and building elements, and gives the corresponding symbols and units.
NOTE Because the scope of this document is restricted to thermal performance and energy use in the built environment, some of the definitions it contains differ from those given ISO 80000-5.

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    20 pages
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ISO 7345:2018 defines physical quantities used in the thermal performance of buildings and building elements, and gives the corresponding symbols and units. NOTE Because the scope of this document is restricted to thermal performance and energy use in the built environment, some of the definitions it contains differ from those given ISO 80000-5.

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    12 pages
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  • Standard
    12 pages
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IEC TS 62720:2017(E) specifies identifiers for units to support computer-based processing of product data. It provides a survey of quantities with associated collections of internationally standardized as well as non–standardized units used in business and science.
It covers any standard or non-standard units of measure currently in use, in two or more distinct ethno-linguistic groups or nations, at least in one domain of industry, for which an explicit method of conversion to a known standard unit of measure or its equivalent is well documented or evident from external references.

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    87 pages
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In IEC 80000-6:2008, names, symbols, and definitions for quantities and units of electromagnetism are given. Where appropriate, conversion factors are also given. International Standard IEC 80000-6 has been prepared by IEC technical committee 25: Quantities and units, and their letter symbols in close cooperation with ISO/TC 12, Quantities, units, symbols, conversion factors. This first edition of IEC 80000-6 cancels and replaces the second edition of ISO 31-5, published in 1992, and its amendment 1 (1998).

  • Standard
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  • Standard – translation
    36 pages
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IEC TR 62690:2014 which is a technical report provides information concerning the behaviour of fibres and cables when exposed to hydrogen effects. The application of multimode fibres is very rarely subject to hydrogen effects. For that reason, this technical report only highlights the effects of hydrogen to single-mode fibres. Keywords: hydrogen effects, single-mode fibres

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    9 pages
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