Work, Energy & Power Calculators & Tools

Calculate work done using W = Fd, W = Fd cos(θ), work–energy theorem, W = Pt, or W = mgh with formula steps.

Calculate kinetic energy using KE = ½mv². Solve for energy, mass, velocity, or momentum with formula steps.

Calculate gravitational potential energy using PE = mgh. Solve for energy, mass, height, or gravity with planetary comparison.

Relate net work to the change in kinetic energy of an object.

Calculate elastic potential energy stored in a spring using U = ½kx². Solve for energy, spring constant, displacement, or force.

Calculate foot-pounds of energy from grains and velocity, convert FPE to joules, or solve for velocity and mass.

Calculate impact energy from mass and velocity or drop height. Estimate average impact force from stopping distance or time.

Calculate power-to-weight ratio (PWR = P/m) in W/kg, hp/lb, kW/tonne. Find required power or maximum mass.

Calculate work, force, or distance using the formula W = Fd with unit conversions and formula steps.

Calculate total mechanical energy (ME = KE + PE), solve for velocity or height using conservation of energy.

Calculate spring constant using k = F/x (Hooke’s law). Find spring force, displacement, or elastic PE.

Calculate power from force and velocity using P = Fv or P = Fv cos(θ). Solve for force, velocity, or average power.

Determine the mechanical advantage of simple machines.

Calculate the efficiency of energy conversion systems.

Convert between horsepower, watts, and kilowatts.