New search facility:
BIPM Home

Site map

Metrologia

KCDB

JCTLMDB

Contact us
> You are here:
SI
>
SI brochure (8th ed.)
SI brochure (8th edition)
Version française
Summary
Introduction
SI units
Decimal multiples and submultiples of SI units
Units outside the SI
Writing unit symbols and names, and expressing the values of quantities
Decisions of the CGPM and the CIPM
Practical realization of the definitions of some important units
Units for photochemical and photobiological quantitites
List of acronyms
Search the SI brochure
Direct access
•
BIPM METROLOGY PORTAL
•
USEFUL LINKS
•
ACRONYMS
•
CIPM MRA
•
KCDB
•
JCTLM DATABASE
•
MEETINGS
•
CC DIRECTORY
•
BIPM STAFF DIRECTORY
•
PRACTICAL INFORMATION
•
THE TIME
•
METROLOGIA
•
CODATA TASK GROUP ON
FUNDAMENTAL CONSTANTS
The International System of Units (SI)
Download files:
Complete brochure
(French and English, 8th edition)
Text in English
(8th edition)
Text in French
(8th edition)
Concise summary
(4 pages)
Pocket version
(to be printed recto/verso and folded (3x5) to creditcard size)
Browse the content online:
Chapter 1

Chapter 2

Chapter 3

Chapter 4

Chapter 5
Appendix 1

Appendix 2

Appendix 3
Preface to the 8th edition
Introduction
Quantities and units
The International System of Units (SI) and the corresponding system of quantities
Dimensions of quantities
Coherent units, derived units with special names, and the SI prefixes
SI units in the framework of general relativity
Units for quantities that describe biological effects
Legislation on units
Historical note
SI units
SI base units
Definitions
Unit of length (metre)
Unit of mass (kilogram)
Unit of time (second)
Unit of electric current (ampere)
Unit of thermodynamic temperature (kelvin)
Unit of amount of substance (mole)
Unit of luminous intensity (candela)
Symbols for the seven base units
SI derived units
Derived units expressed in terms of base units
Units with special names and symbols; units that incorporate special names and symbols
Units for dimensionless quantities, also called quantities of dimension one
Decimal multiples and submultiples of SI units
SI prefixes
The kilogram
Units outside the SI
NonSI units accepted for use with the SI, and units based on fundamental constants
Other nonSI units not recommended for use
Writing unit symbols and names, and expressing the values of quantities
Unit symbols
Unit names
Rules and style conventions for expressing values of quantities
Value and numerical value of a quantity, and the use of quantity calculus
Quantity symbols and unit symbols
Formatting the value of a quantity
Formatting numbers, and the decimal marker
Expressing the measurement uncertainty in the value of a quantity
Multiplying or dividing quantity symbols, the values of quantities, or numbers
Stating values of dimensionless quantities, or quantities of dimension one
Appendix 1. Decisions of the CGPM and the CIPM
Listed by date
Listed by subject:
Decisions relating to the establishment of the SI
Decisions relating to the base units of the SI
Length
Mass
Time
Electrical units
Thermodynamic temperature
Amount of substance
Luminous intensity
Decisions relating to SI derived and supplementary units
SI derived units
Supplementary units
Decisions concerning terminology and the acceptance of units for use with the SI
SI prefixes
Unit symbols and numbers
Unit names
The decimal marker
Units accepted for use with the SI; an example: the litre
Appendix 2. Practical realization of the definitions of some important units
Length
Mass
Time
Electrical quantities
Temperature
Amount of substance
Photometric quantities
Appendix 3. Units for photochemical and photobiological quantities
List of acronyms
More details/
Obtain a printed copy
Summary
Introduction
: Chapter 1
SI units
: Chapter 2
Decimal multiples and submultiples of SI units
: Chapter 3
Units outside the SI
: Chapter 4
Writing unit symbols and names, and expressing the values of quantities
: Chapter 5
Decisions of the CGPM and the CIPM
: Appendix 1
Practical realization of the definitions of some important units
: Appendix 2
Units for photochemical and photobiological quantitites
: Appendix 3
List of acronyms
Note:
For the official text, please refer to the PDF files available at:
http://www.bipm.org/utils/common/pdf/si_brochure_8_en.pdf
(in English) and
http://www.bipm.org/utils/common/pdf/si_brochure_8_fr.pdf
(in French).
> You are here:
SI
>
SI brochure (8th ed.)
Printable version
Back to top
Disclaimer