ABSTRACT
Uppercase Lowercase Name Uppercase Lowercase Name
Α α Alpha Ν ν Nu Β β Beta Ξ ξ Xi Γ γ Gamma Ο ο Omicron ∆ δ Delta Π pi Pi Ε ε, Epsilon Ρ ρ, Rho Ζ ζ Zeta Σ σ, ς Sigma Η η Eta Τ τ Tau Θ θ, ϑ Theta Υ, ϒ υ Upsilon Ι ι Iota Φ φ, ϕ Phi Κ κ, Kappa Χ χ Chi Λ λ Lambda Ψ ψ Psi Μ µ Mu Ω ω, ϖ Omega
S6.1.2. SI Prefixes Factor Prefix Symbol Factor Prefix Symbol
101 deca da 10-1 deci d 102 hecto h 10-2 centi c 103 kilo k 10-3 milli m 106 mega M 10-6 micro µ 109 giga G 10-9 nano n 1012 tera T 10-12 pico p 1015 peta P 10-15 femto f 1018 exa E 10-18 atto a 1021 zetta Z 10-21 zepto z 1024 yotta Y 10-24 yocto y
S6.1.3. SI Base Units Name Symbol Quantity metre m length
kilogram kg mass
second s time ampere A electric current
kelvin K thermodynamic temperature mole mol amount of substance
candela cd luminous intensity
Name Symbol Quantity SI equivalent minute min time 1 min = 60 s hour h time 1 h = 60 min = 3600 s day d time 1 d = 24 h = 1440 min = 86400 s
degree of arc ◦ angle 1◦ = π180 rad
minute of arc ′ angle 1′ = 160 ◦
second of arc ′′ angle 1′′ = 160 ′
hectare ha area 1 ha = 10000 m2
litre l, L volume 1 l = 1 dm3 = 0.001 m3
tonne t mass 1 t = 1000 kg
S6.1.6. Other Common Non-SI Units Name Symbol Quantity SI equivalent fermi fm length 1 fm = 10-15 m
a˚ngstro¨m Å length 1 Å = 0.1 nm = 10-10 m nautical mile M length 1 M = 1852 m
astronomical unit AU length 1 AU = 1.49598 × 1011 m
light-year ly length 1 ly = 9.46073 × 1015 m
parsec pc length 1 pc = 3.26156 ly = 3.08568 × 1016 m
are a area 1 a = 1 dam2 = 100 m2
barn b area 1 b = 10-28 m2
electronvolt eV energy 1 eV = 1.60218 × 10-19 J
electronvolt eV mass 1 eV = 1.78266 × 10-36 kg
atomic mass unit AMU, u mass 1 AMU = 1.66054 × 10-27 kg
dalton Da mass 1 Da = 1 AMU = 1.66054 × 10-27 kg
bar bar pressure 1 bar = 105 Pa millibar mbar pressure 1 mbar = 1 hPa = 100 Pa
atmosphere atm pressure 1 atm = 1.01325 × 105 Pa millimetre of mercury mmHg pressure 1 mmHg = 133.322 Pa
decibel dB logarithmic ratio
S6.1.7. Base Planck Units The base Planck units are those of length, mass, time, electric charge, and temperature; these are derived from five fundamental physical constants: speed of light in vacuum (c), gravitational constant (G), reduced Planck constant (~), Coulomb constant (ke = 1/(4πε0)), and Boltzmann constant (kB).
