Units

Units Used in Physics (Fundamental units in bold)
Quantity Common Symbol Unit Unit in Terms of Base SI Units
Acceleration $$\overset{\to }{a}$$ m/s2 m/s2
Amount of substance n mole mol
Angle $$\theta ,\varphi $$ radian (rad)
Angular acceleration $$\overset{\to }{\alpha }$$ rad/s2 s−2
Angular frequency $$\omega $$ rad/s s−1
Angular momentum $$\overset{\to }{L}$$ $$\text{kg}·{\text{m}}^{2}\text{/s}$$ $$\text{kg}·{\text{m}}^{2}\text{/s}$$
Angular velocity $$\overset{\to }{\omega }$$ rad/s s−1
Area A m2 m2
Atomic number Z
Capacitance C farad (F) $${\text{A}}^{2}·{\text{s}}^{4}\text{/}\text{kg}·{\text{m}}^{2}$$
Charge q, Q, e coulomb (C) $$\text{A}·\text{s}$$
Charge density:
    Line $$\lambda $$ C/m $$\text{A}·\text{s/m}$$
    Surface $$\sigma $$ C/m2 $$\text{A}·{\text{s/m}}^{2}$$
    Volume $$\rho $$ C/m3 $$\text{A}·{\text{s/m}}^{3}$$
Conductivity $$\sigma $$ $$\text{1/}\text{Ω}·\text{m}$$ $${\text{A}}^{2}·{\text{s}}^{3}\text{/kg}·{\text{m}}^{3}$$
Current I ampere A
Current density $$\overset{\to }{J}$$ A/m2 A/m2
Density $$\rho $$ kg/m3 kg/m3
Dielectric constant $$\kappa $$
Electric dipole moment $$\overset{\to }{p}$$ $$\text{C}·\text{m}$$ $$\text{A}·\text{s}·\text{m}$$
Electric field $$\overset{\to }{E}$$ N/C $$\text{kg}·\text{m/A}·{\text{s}}^{3}$$
Electric flux $$\text{Φ}$$ $$\text{N}·{\text{m}}^{2}\text{/}\text{C}$$ $$\text{kg}·{\text{m}}^{3}\text{/A}·{\text{s}}^{3}$$
Electromotive force $$\epsilon $$ volt (V) $$\text{kg}·{\text{m}}^{2}\text{/A}·{\text{s}}^{3}$$
Energy E,U,K joule (J) $$\text{kg}·{\text{m}}^{2}{\text{/s}}^{2}$$
Entropy S J/K $$\text{kg}·{\text{m}}^{2}{\text{/s}}^{2}·\text{K}$$
Force $$\overset{\to }{F}$$ newton (N) $$\text{kg}·{\text{m/s}}^{2}$$
Frequency f hertz (Hz) s−1
Heat Q joule (J) $$\text{kg}·{\text{m}}^{2}{\text{/s}}^{2}$$
Inductance L henry (H) $$\text{kg}·{\text{m}}^{2}{\text{/A}}^{2}·{\text{s}}^{2}$$
Length: $$\ell ,L$$ meter m
    Displacement $$\text{Δ}x,\text{Δ}\overset{\to }{r}$$
    Distance d, h
    Position $$x,y,z,\overset{\to }{r}$$
Magnetic dipole moment $$\overset{\to }{\mu }$$ $$\text{N}·\text{J/T}$$ $$\text{A}·{\text{m}}^{2}$$
Magnetic field $$\overset{\to }{B}$$ $$\text{tesla}(\text{T})=({\text{Wb/m}}^{2})$$ $$\text{kg/A}·{\text{s}}^{2}$$
Magnetic flux $${\text{Φ}}_{\text{m}}$$ weber (Wb) $$\text{kg}·{\text{m}}^{2}\text{/A}·{\text{s}}^{2}$$
Mass m, M kilogram kg
Molar specific heat C $$\text{J/mol}·\text{K}$$ $$\text{kg}·{\text{m}}^{2}{\text{/s}}^{2}·\text{mol}·\text{K}$$
Moment of inertia I $$\text{kg}·{\text{m}}^{2}$$ $$\text{kg}·{\text{m}}^{2}$$
Momentum $$\overset{\to }{p}$$ $$\text{kg}·\text{m/s}$$ $$\text{kg}·\text{m/s}$$
Period T s s
Permeability of free space $${\mu }_{0}$$ $${\text{N/A}}^{2}\text{=}(\text{H/m})$$ $$\text{kg}·{\text{m/A}}^{2}·{\text{s}}^{2}$$
Permittivity of free space $${\epsilon }_{0}$$ $${\text{C}}^{2}\text{/N}·{\text{m}}^{2}\text{=}(\text{F/m})$$ $${\text{A}}^{2}·{\text{s}}^{4}\text{/kg}·{\text{m}}^{3}$$
Potential V $$\text{volt}(\text{V})=(\text{J/C})$$ $$\text{kg}·{\text{m}}^{2}\text{/A}·{\text{s}}^{3}$$
Power P $$\text{watt}(\text{W})=(\text{J/s})$$ $$\text{kg}·{\text{m}}^{2}{\text{/s}}^{3}$$
Pressure p $$\text{pascal}(\text{Pa})=({\text{N/m}}^{2})$$ $$\text{kg/m}·{\text{s}}^{2}$$
Resistance R $$\text{ohm}(\text{Ω})=(\text{V/A})$$ $$\text{kg}·{\text{m}}^{2}{\text{/A}}^{2}·{\text{s}}^{3}$$
Specific heat c $$\text{J/kg}·\text{K}$$ $${\text{m}}^{2}{\text{/s}}^{2}·\text{K}$$
Speed $$\nu $$ m/s m/s
Temperature T kelvin K
Time t second s
Torque $$\overset{\to }{\tau }$$ $$\text{N}·\text{m}$$ $$\text{kg}·{\text{m}}^{2}{\text{/s}}^{2}$$
Velocity $$\overset{\to }{v}$$ m/s m/s
Volume V m3 m3
Wavelength $$\lambda $$ m m
Work W $$\text{joule}(\text{J})=(\text{N}·\text{m})$$ $$\text{kg}·{\text{m}}^{2}{\text{/s}}^{2}$$