System International [Metric]

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- "With a Servant's Heart" -

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Base Units

SymbolPhysical QuantityName
mLengthMeter
kgMassKilogram
sTimeSecond
AElectric CurrentAmpere
KThermodynamic TemperatureKelvin
molAmount Of SubstanceMole

Derived Units

SymbolPhysical QuantityNameDefinition
HzfrequencyHertz[/s]
JenergyJoule[m² kg /s²]
NforceNewton[m kg /s² = J /m³]
WpowerWatt[m² kg /s³ = J /s³]
PapressurePascal[/m kg /s² = N /m² =J /m³]
Celectric chargeCoulomb[s A]
VdifferenceVolt[/m² kg /s³ /A = J /s /A]
Ohmelectrical resistanceOhm[/m² /kg³ /A² = V /A]
l volume-liquid litre [dm³]

Standard Prefixes

SymbolNameDefinition
Tterae+12
Ggigae+09
Mmegae+06
kkiloe+03
hhectoe+02
Ddecae+01
ddecie-01
ccentie-02
mmillie-03
umicroe-06
nnanoe-09
ppicoe-12
ffemtoe-15
aattoe-18

Common metric based units

SymbolPhysical QuantityNameDefinition
A Length Angstrom e-10 m
dyn Force Dyne e-5 N
bar Pressure e-5 N /m²
erg Energy e-7 J
H Area hectare e+4 m²

© AiZhu formerly Zhong Ri Jia Mei (ZRJM) email: AiZhu @ XiaoTu.com
- "With a Servant's Heart" -
Last updated: CUT: Fri Nov 24 07:54:03 2006