Standardization of units and symbols for quantities and units (and mathematical symbols) used within the different fields of science and technology, giving, where necessary, definitions of these quantities and units. Standard conversion factors between the various units.
The committees below can access the documents of ISO/TC 12 :
| Reference | Title | ISO/IEC |
|---|---|---|
| IEC/TC 25 | Quantities and units | IEC |
| ISO/IEC JTC 1/SC 32 | Data management and interchange | ISO/IEC |
| ISO/TC 37 | Terminology and other language and content resources | ISO |
| ISO/TC 43 | Acoustics | ISO |
| ISO/TC 43/SC 1 | Noise | ISO |
| ISO/TC 43/SC 3 | Underwater acoustics | ISO |
| ISO/TC 47 | Chemistry | ISO |
| ISO/TC 69 | Applications of statistical methods | ISO |
| ISO/TC 85 | Nuclear energy, nuclear technologies, and radiological protection | ISO |
| ISO/TC 215 | Health informatics | ISO |
ISO/TC 12 can access the documents of the committees below :
| Reference | Title | ISO/IEC |
|---|---|---|
| CIE | International Commission on Illumination | ISO |
| IEC/TC 1 | Terminology | IEC |
| IEC/TC 25 | Quantities and units | IEC |
| ISO/IEC JTC 1/SC 32 | Data management and interchange | ISO/IEC |
| ISO/TC 8/SC 6 | Navigation and ship operations | ISO |
| ISO/TC 37 | Terminology and other language and content resources | ISO |
| ISO/TC 43 | Acoustics | ISO |
| ISO/TC 43/SC 1 | Noise | ISO |
| ISO/TC 47 | Chemistry | ISO |
| ISO/TC 69 | Applications of statistical methods | ISO |
| ISO/TC 85 | Nuclear energy, nuclear technologies, and radiological protection | ISO |
| ISO/TC 115 | Pumps | ISO |
| ISO/TC 215 | Health informatics | ISO |
| Acronym | Title | Category |
|---|---|---|
| BIPM | International Bureau of Weights and Measures | A |
| CIE | International Commission on Illumination | A |
| IAEA | International Atomic Energy Agency | A |
| ICAO | International Civil Aviation Organization | A |
| ICRU | International Commission on Radiation Units and Measurements | A |
| ILO | International Labour Organization | A |
| Infoterm | International Information Centre for Terminology (Infoterm) | A |
| ITU | International Telecommunication Union | A |
| IUCr | International Union of Crystallography | A |
| IUPAC | International Union of Pure and Applied Chemistry | A |
| IUPAP | International Union of Pure and Applied Physics | A |
| OASIS | Organization for the Advancement of Structured Information Standards (OASIS) | A |
| OIML | International Organization of Legal Metrology | A |
| UNECE | United Nations Economic Commission for Europe | A |
| WCO | World Customs Organization | A |
| WHO | World Health Organization | A |
| WMO | World Meteorological Organization | A |
| EC - European Commission | European Commission | B |
| IMO | International Maritime Organization | B |