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International System of Units

Overview#

International System of Units (SI, abbreviated from the French Système international (d'unités)) is the modern form of the "metric" Unit of measurement system.

Standard prefixes for the SI units of measure#

Prefix name decahectokilomegagigaterapetaexazettayotta
Prefix symbol dahkMGTPEZY
Factor10010110210310610910121015101810211024

Submultiples#

Prefix name decicentimillimicronanopicofemtoattozeptoyocto
Prefix symboldcmμnpfazy
Factor10010-110-210-310-610-910-1210-1510-1810-2110-24

More Information#

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