Physics Calculators
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Mechanics
Newton's Second Law
Calculate force from mass and acceleration with Newton's second law, F = ma.
F = m × aAcceleration
Calculate acceleration from initial velocity, final velocity and time.
a = (v₁ − v₀) / tMomentum
Calculate momentum from mass and velocity (p = mv).
p = m × vProjectile Motion
Calculate the range, maximum height and flight time of a projectile from launch speed and angle.
R = v₀² · sin(2θ) / gFree Fall
Calculate how long an object takes to fall from a given height and how fast it hits the ground.
t = √(2h/g), v = √(2gh)Torque
Calculate torque from force, lever arm length and angle.
τ = r × F × sin(θ)Terminal Velocity
Calculate terminal velocity from mass, drag coefficient, cross-sectional area and air density.
v = √(2mg / (ρ·A·Cd))Energy
Kinetic Energy
Calculate kinetic energy from mass and velocity (KE = ½mv²).
KE = ½ × m × v²Potential Energy
Calculate gravitational potential energy from mass and height (PE = mgh).
PE = m × g × hWork
Calculate mechanical work from force, distance and angle (W = Fd cos θ).
W = F × d × cos(θ)Power
Calculate power from work (energy) and time (P = W/t).
P = W / tElectricity & Waves
Ohm's Law
Calculate current and power from voltage and resistance with Ohm's law (V = IR, P = V²/R).
I = V / R, P = V² / RWavelength
Calculate wavelength from wave speed and frequency (λ = v/f) — for light, radio, WiFi and sound.
λ = v / fLens Equation
Calculate image distance and magnification with the thin lens equation.
1/f = 1/dₒ + 1/dᵢPressure
Calculate pressure from force and area (P = F/A).
P = F / A