Physics

Motion, force, energy, electricity, waves and more.

Circular motion calculator

Centripetal acceleration, force, period and frequency for motion at constant speed around a circle.

Density calculator

Density from mass and volume, in grams per cubic centimetre and kilograms per cubic metre.

Electrical power and energy calculator

Electrical power from any two of voltage, current and resistance, plus the energy used over time.

Fluid pressure calculator

The gauge and absolute pressure at a depth in a fluid.

Kinetic energy and momentum calculator

Kinetic energy and momentum of a moving mass.

Thin lens equation calculator

The image distance and magnification formed by a thin lens.

Collision calculator (momentum)

Velocities after an elastic or a perfectly inelastic collision between two masses.

Newton's second law calculator

Force from mass and acceleration, and weight on Earth.

Ohm's law calculator

Current and power from voltage and resistance.

Projectile motion calculator

Range, maximum height and time of flight of an object launched at an angle, ignoring air resistance.

Series and parallel resistor calculator

The equivalent resistance of two resistors connected in series or in parallel.

Speed, distance and time calculator

Average speed from distance and time, in m/s, km/h and mph.

Uniform acceleration calculator

Find final velocity and displacement for constant acceleration in a straight line.

Newton's law of universal gravitation calculator

The gravitational force of attraction between two masses.

Wave speed calculator

Wave speed and period from frequency and wavelength.

Work and power calculator

Work done by a force over a distance, the power for a given time, and horsepower.