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Physics Formulas


DescriptionFormula / Other
Length Metre (m)
Mass Kilogram (kg)
Time Second (s)
Electric Current Ampere (A)
Amount of Substance Mole (mol)
Temperature (absolute) Kelvin (K)
Luminous intensity Candela (cd)
Area Square Metre (m^2)
Volume Cubic Metre (m^3)
Density Kilogram per Cubic Metre (kg m^(-3))
Velocity Metre per Second (m s^(-1))
Force Newton (N) or (kg m s^(-2))
Energy Joule (J) or (N m)
Power Watt (W) or (J s^(-1))
Charge Coulomb (C) or (A s)
Potential difference Volt (V) or (J C^(-1))
Electric field Volt per Metre (V m^1)
Electric resistance Ohm (Ω) or (V A^(-1))
Capacitance Farad (F) or (C V^(-1))
Magnetic field Tesla (T) or (Wb m^(-2))
Illumination Lux (lx) or (lm m^(-2))
Giga- G (10^9)
Mega- M (10^6)
Kilo- k (10^3)
Centi- c (10^(-2))
Milli- m (10^(-3))
Micro- μ (10^(-6))
Nano- n (10^(-9))
Acceleration due to Gravity (on Earth) g = [9.8 m s^(-2)] or [9.8 N kg-1]
Equatorial radius of the Earth 6.4 × 10^6 m
Speed of Light (in vacuum) c = 3.00 × 10^8 m s^(-1)
Charge on Electron e = 1.60 × 10^(-19) C
Proton mass 1.67 × 10^(−27) kg
Neutron mass 1.67 × 10^(−27) kg
Electron mass 9.11 × 10^(−31) kg
Avogadro's number 6.02 × 10^(23) mol^(−1)
Planck's constant h = 6.626 × 10^(-34) J s OR 4.136 × 10^(-15) eV s
Gravitational constant G = 6.67 × 10^(-11) N m^2 kg^(-2)
Speed of Sound (dry air) 640 m s^(-1) (20 oC)
Mass of the Earth 6.0 × 10^24 kg
Mass of the Sun 2.0 × 10^30 kg
Mass of the Moon 7.3 × 10^22 kg
α Alpha (alpha particle radiation)
β Beta (beta particle radiation)
γ Gamma (gamma radiation)
Δ (upper case) Delta ("a change in" a quantity)
ε Epsilon (electromotive force (EMF); electrical permittivity)
Φ Phi (magnetic flux)
λ Lambda (wavelength)
μ Mu (micro; magnetic permeability)
ν Nu (frequency)
π Pi (used in circular functions: the ratio of a circle's circumference to its diameter)
θ Theta (angles)
ρ Rho (resistivity)
σ Sigma (stress)
τ Tau (torque)
ω (lower case) Omega (angular velocity)
Ω (upper case) Omega (electrical resistance)
Created by: Doctor Moreau
Popular Physics sets




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