Physics Calculators

4 free calculators in this subject.

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

Mechanics

Force Calculator

Compute force from mass and acceleration using Newton's second law

Kinetic Energy Calculator

Compute kinetic energy from mass and velocity using KE = ½mv²

Electricity

Ohm's Law Calculator

Current, power, and resistance from voltage and any one other value

Kinematics

Projectile Motion Calculator

Compute 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.