Decisions of the CGPM and the CIPM related to the SI
SI Brochure - Appendix 1
This appendix lists those decisions of the CGPM and the CIPM that bear directly upon definitions of the units of the SI, prefixes defined for use as part of the SI, and conventions for the writing of unit symbols and numbers.
The decisions of the CGPM and CIPM are listed below in chronological order, and can be browsed by subject using the left-hand menu.
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Resolutions/Recommendations
Sanction of the international prototypes of the metre and the kilogram
DOI : 10.59161/CGPM1889DECLE
Declaration concerning the definition of the litre
DOI : 10.59161/CGPM1901DECL1E
Declaration on the unit of mass and on the definition of weight; conventional value of gn
DOI : 10.59161/CGPM1901DECL2E
Definition of the metre by the international Prototype
DOI : 10.59161/CGPM1927RES1E
Triple point of water; thermodynamic scale with a single fixed point; unit of quantity of heat (joule)
DOI : 10.59161/CGPM1948RES3E
Proposal for establishing a practical system of units of measurement
DOI : 10.59161/CGPM1948RES6E
Writing and printing of unit symbols and of numbers
DOI : 10.59161/CGPM1948RES7E
Definition of the thermodynamic temperature scale
DOI : 10.59161/CGPM1954RES3E
Decimal multiples and submultiples of the unit of mass
DOI : 10.59161/CIPM1967REC2E
Definition of the SI unit of thermodynamic temperature (kelvin)
DOI : 10.59161/CGPM1967RES4E
Abrogation of earlier decisions (micron, new candle)
DOI : 10.59161/CGPM1967RES7E
Système International d'Unités, Rules for application of Resolution 12 of the 11th CGPM (1960)*
DOI : 10.59161/CIPM1969REC1E
Special name for the SI unit of dose equivalent (sievert)
DOI : 10.59161/CGPM1979RES5E
SI supplementary units (radian and steradian)
DOI : 10.59161/CIPM1980REC1E
On the realization of the definition of the metre
DOI : 10.59161/CGPM1983RES2E
Forthcoming adjustment to the representations of the volt and of the ohm
DOI : 10.59161/CGPM1987RES6E
Representation of the volt by means of the Josephson effect
DOI : 10.59161/CIPM1988REC1E
Representation of the ohm by means of the quantum Hall effect
DOI : 10.59161/CIPM1988REC2E
The International Temperature Scale of 1990
DOI : 10.59161/CIPM1989REC5E
Elimination of the class of supplementary units in the SI
DOI : 10.59161/CGPM1995RES8E
Special name for the SI derived unit mole per second, the katal, for the expression of catalytic activity
DOI : 10.59161/CGPM1999RES12E
Revision of the practical realization of the definition of the metre
DOI : 10.59161/CIPM2002REC1E
Revision of the Mise en Pratique list of recommended radiations
DOI : 10.59161/CIPM2003REC1E
Clarification of the definition of the kelvin, unit of thermodynamic temperature
DOI : 10.59161/CIPM2005REC2E
Revision of the Mise en pratique list of recommended radiations
DOI : 10.59161/CIPM2005REC3E
Concerning secondary representations of the second
DOI : 10.59161/CIPM2006REC1E
Revision of the Mise en pratique list of recommended radiations
DOI : 10.59161/CIPM2007REC1E
On the revision of the mise en pratique of the definition of the metre and the development of new optical frequency standards
DOI : 10.59161/CGPM2007RES9E
Clarification of the definition of the kelvin, unit of thermodynamic temperature
DOI : 10.59161/CGPM2007RES10E
On the possible redefinition of certain base units of the International System of Units (SI)
DOI : 10.59161/CGPM2007RES12E
Updates to the list of standard frequencies
DOI : 10.59161/CIPM2009REC2E
On the possible future revision of the International System of Units,the SI
DOI : 10.59161/CGPM2011RES1E
Updates to the list of standard frequencies
DOI : 10.59161/CIPM2013REC1E
On the future revision of the International System of Units, the SI
DOI : 10.59161/CGPM2014RES1E
Updates to the list of standard frequencies
DOI : 10.59161/CIPM2015REC2E
On progress towards the possible redefinition of the SI
DOI : 10.59161/CIPM2017DEC10E
On the revision of the International System of Units (SI)
DOI : 10.59161/CGPM2018RES1E