BIPM - Resolution 12 of the 11th CGPM

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The 11th Conférence Générale des Poids et Mesures (CGPM),

considering

Resolution 6 of the 10th CGPM, by which it adopted six base units on which to establish a practical system of measurement for international use:

Resolution 3 adopted by the Comité International des Poids et Mesures (CIPM) in 1956,

decides

the system founded on the six base units above is called the "Système International d'Unités";
the international abbreviation of the name of the system is SI;
names of multiples and submultiples of the units are formed by means of the following prefixes:

the units listed below are used in the system, without excluding others which might be added later.

Supplementary units

plane angle	radian	rad
solid angle	steradian	sr

Derived units

area	square metre	m²
volume	cubic metre	m³
frequency	hertz	Hz	1/s
mass density (density)	kilogram per cubic metre	kg/m³
speed, velocity	metre per second	m/s
angular velocity	radian per second	rad/s
acceleration	metre per second squared	m/s²
angular acceleration	radian per second squared	rad/s²
force	newton	N	kg � m/s²
pressure (mechanical stress)	newton per square metre	N/m²
kinematic viscosity	square metre per second	m²/s
dynamic viscosity	newton-second per square metre	N � s/m²
work, energy, quantity of heat	joule	J	N � m
power	watt	W	J/s
quantity of electricity	coulomb	C	A � s
tension (voltage), potential difference, electromotive force	volt	V	W/A
electric field strength	volt per metre	V/m
electric resistance	ohm		V/A
capacitance	farad	F	A � s/V
magnetic flux	weber	Wb	V � s
inductance	henry	H	V � s/A
magnetic flux density	tesla	T	Wb/m²
magnetic field strength	ampere per metre	A/m
magnetomotive force	ampere	A
luminous flux	lumen	lm	cd � sr
luminance	candela per square metre	cd/m²
illuminance	lux	lx	lm/m²

Reference:

Note:

The CGPM later abrogated certain of its decisions and extended the list of prefixes:

The name and symbol for the unit of thermodynamic temperature were modified by the 13th CGPM in 1967 (Resolution 3).
A seventh base unit, the mole, was adopted by the 14th CGPM in 1971 (Resolution 3).
Further prefixes were adopted by the 12th CGPM in 1964 (Resolution 8), the 15th CGPM in 1975 (Resolution 10), and the 19th CGPM in 1991 (Resolution 4).
The 20th CGPM in 1995 abrogated the class of supplementary units in the SI (Resolution 8). These are now considered as derived units.
The 13th CGPM in 1967 (Resolution 6) specified other units which should be added to this list of derived units. In principle, the list is without limit.
Modern practice is to use the phrase "amount of heat" rather than "quantity of heat", because the word quantity has a different meaning in metrology.
Modern practice is to use the phrase "amount of electricity" ranther than "quantity of electrcity" (see above).