Ohm's Law Calculator
Enter any two of V, I, R and P to get the other two.
Physics Calculators
Calculators for mechanics and electricity — velocity, acceleration, force, kinetic energy, density and Ohm's law — with SI units, unit options and every equation shown.
Most used
Acceleration Calculator
Acceleration from Δv ÷ t, from distance and time, or from F ÷ m.
Density Calculator
Find density, mass or volume with ρ = m ÷ V.
Dynamics & rotation
Force Calculator
Solve F = ma for force, mass or acceleration.
Electricity & circuits
Ohm's Law Calculator
Enter any two of V, I, R and P to get the other two.
Energy, work & power
Kinetic Energy Calculator
Find kinetic energy, mass or velocity with KE = ½mv².
Fluids & pressure
Density Calculator
Find density, mass or volume with ρ = m ÷ V.
Boiler Feed Pump Calculator
Feedwater flow, total dynamic head, shaft and motor power for a boiler.
Kinematics
Acceleration Calculator
Acceleration from Δv ÷ t, from distance and time, or from F ÷ m.
Velocity Calculator
Average velocity v = d ÷ t, final velocity v = v₀ + at, distance and time.
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