SI-Units
General units
Length | metre: m |
Weigth | kilograms: kg |
Time | seconds: s |
Amperage | ampere: A |
Thermodynamic temperature | kelvin: K |
Amount of substance | mol: mol |
Luminosity | candela: cd |
SI - prefixes
Exponent (to base 10) of decimals: E n = 10n
Factor Prefixes Symbol:
1024 E 24 yotta Y
1021 E 21 zetta Z
1018 E 18 exa E
1015 E 15 peta P
1012 E 12 tera T
109 E 9 giga G
106 E 6 mega M
103 E 3 kilo k
102 E 2 hecto h
101 E 1 deca da
10-1 E -1 deci d
10-2 E -2 centi c
10-3 E -3 milli m
10-6 E -6 micro µ
10-9 E -9 nano n
10-12 E-12 pico p
10-15 E-15 femto f
10-18 E-18 atto a
10-21 E-21 zepto z
10-24 E-24 yocto y
Derived SI-Units:
(Note: all units right from slash should be the bottom of the fracture)
Frequency
Hertz: Hz = 1/s
Force
Newton: N = m kg/s2
Pressure, mechanical voltage
Pascal: Pa = N/m2 = kg/m s2
Energy, work, heat quantity
Joule: J = N m = m2 kg/s2
Power
Watt: W = J/s = m2 kg/s3
Electric charge
Coulomb: C = s A
Electric tension
Volt: V = W/A = m2 kg/s3 A
Capacity
Farad: F = C/V = s4 A2/m2 kg
Electric resistance
Ohm: Omega = V/A = m2 kg/s3 A2
Electric admittance
Siemens: S = A/V = s3 A2/m2 kg
Magnetic flux
Weber: Wb = V s = m2 kg/s2 A
Magnetic induction
Tesla: T = Wb/m2 = kg/s2 A
Inductance
Henry: H = Wb/A = m2 kg/s2 A2
Light flux
Lumen: lm = cd sr
Illuminance
Lux: lx = lm/m2 = cd sr/m2
Radioactivity
Becquerel: Bq = 1/s
Radiation absorbed dose
Gray: Gy = J/kg = m2/s2
Absolute viscosity
Pascal second: Pa s = kg/m s
Torsional moment
Newton metre: N m = m2 kg/s2
Surface tension
Newton per metre: N/m = kg/s2
Heat flux density
Watt per square metre: W/m2 = kg/s3
Heat capacity, entropy
Joule per kelvin: J/K = m2 kg/s2 K
Specific heat capacity, specific entropy
Joule per kilogram kelvin: J/kg K = m2/s2 K
Specific energy
Joule per kilogram: J/kg = m2/s2
Thermal conductivity
Watt per metre kelvin: W/m K = m kg/s3 K
Energy density
Joule per cubic metre: J/m3 = kg/m s2
Electric field strength
Volt per metre: V/m = m kg/s3 A
Electric change density
Coulomb per cubix metre: C/m3 = s A/m3
Electric flux density
Coulomb per square metre: C/m2 = s A/m2
Induction
Farad per metre: F/m = s4 A2/m3 kg
Permeability
Henry per metre: H/m = m kg/s2 A2
Molar energy
Joule per Mol: J/mol = m2 kg/s2 mol
Molar entropy, molar heat capacity
Joule per mol Kelvin: J/mol K = m2 kg/s2 K mol
Exposition
Coulomb per kilogram: C/kg = s A/kg
Absorbed dose rate
Gray per second: Gy/s = m2/s3
Source: SI - Systeme