Density Calculator
Use the free online Density Calculator tool. Fast, private and easy to use — runs entirely in your browser. Part of our Physics Calculators collection.
Velocity Calculator
Solve v = d / t for velocity, distance or time — enter any two values and get the third.
Acceleration Calculator
Find acceleration from the change in velocity over time with a = (v − u) / t.
Force Calculator
Apply Newton's second law F = m × a to solve for force, mass or acceleration.
Kinetic Energy Calculator
Compute kinetic energy in joules with KE = ½ m v² from mass and speed.
Potential Energy Calculator
Find gravitational potential energy with PE = m g h using standard gravity.
Density Calculator
Solve ρ = m / V for density, mass or volume from any two known values.
Ohm's Law Calculator
Solve V = I × R for voltage, current or resistance, with electrical power included.
Electric Power Calculator
Work out electrical power in watts with P = V × I and the energy used per hour in kWh.
Free Fall Calculator
Get the fall time and impact velocity of an object dropped from a height, ignoring air resistance.
Wavelength Calculator
Convert frequency to wavelength with λ = v / f — defaults to the speed of light for radio and light waves.