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Physics Calculators

4 free, peer-reviewed physics calculators

Classical mechanics, electromagnetism, thermodynamics, relativity. Physics calculators that handle units correctly and don't silently convert to the one you didn't want.

Mechanics2

Force CalculatorCompute force from mass and acceleration using Newton's second lawKinetic Energy CalculatorCompute kinetic energy from mass and velocity using KE = ½mv²

Electricity1

Ohm's Law CalculatorCurrent, power, and resistance from voltage and any one other value

Kinematics1

Projectile Motion CalculatorCompute range, max height, and flight time for a launched projectile
About physics calculators

Units are where physics calculators usually fail. We handle them explicitly — every input declares its unit, every conversion is transparent, and the output unit is never implicit. If you're working in SI, stay in SI; if you're in CGS or imperial, we don't quietly switch on you.

Frequently asked questions

Do you handle significant figures correctly?
Yes. Results respect the precision of your inputs by default; you can override to display more decimal places when needed.