Physics Calculators

Open a focused SI calculator and see the formula, inputs, worked example and limits before using the result.

Available tools

  • Speed Calculator — Calculate average speed from distance and time with v = d / t, with the result in m/s and km/h and a worked sprint example.
  • Force Calculator — Calculate net force from mass and acceleration with Newton's second law, F = m × a, in newtons, with a worked example and limits.
  • Kinetic Energy Calculator — Calculate kinetic energy from mass and speed with E = ½mv², in joules, with a worked example and the classical-mechanics limits.

Using these tools

Use consistent SI inputs and treat each result as a calculation check. More complex systems may require vector analysis, uncertainty analysis or professional review.