Table of units anf Prefixes



Table of units
Quantity SI unit Combined or supplementary units
angle rad 1°(deg), 1' (min), 1"(s)
length m Å(Ångstrom)
volume m3 l or L (litre)
time s min,h,d[y (year) is not permitted]
mass kg g(gram), t(ton)
pressure Pa atm
viscosity Pa · s P(poise)
dynamic viscosity m2/s St(stokes)
energy J eV can be used after the conversion factor is shown
temperature K °C
acoustic pressure   dB(decibel)
entropy J/K only K (°C is not permitted)
concentration, composition mol/m3 ppm, mass%, at% etc
magnetic field A/m T(Tesla).1T=7.97x105 A/m
magnetic flux density T Wb/m2
radioactivity Bq Ci(curie)
absorbed dose Gy rad
exposure dose C /kg R(roentgen)
dose equivalent Sv rem


Prefixes
Multiples and submultiples Prefixes Symbols
1018 exa E
1015 peta P
1012 tera T
109 giga G
106 mega M
103 kilo k
102 hecto h
10 deca da
10-1 deci d
10-2 centi c
10-3 milli m
10-6 micro μ
10-9 nano n
10-12 pico p
10-15 femto f
10-18 atto a

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