๐ชForce Calculator (F = ma)
Solve for force, mass, or acceleration using Newton's second law, with unit conversion and an optional net-force mode.
Free Force Calculator
Working through a Newton's Second Law problem? Our free Force Calculator solves F = ma instantly โ enter any two of force, mass, or acceleration, and get the third immediately, with the formula and substitution shown clearly.
Unit conversions are built in, so you can mix newtons and pounds-force, kilograms and pounds, without converting by hand first. For problems with multiple forces acting on an object, the net-force mode lets you add up individual forces along one axis before solving for the resulting acceleration โ exactly how real mechanics problems are set up.
Whether you're checking Newton's laws homework or working through an engineering statics problem, this tool gives you the answer with the reasoning shown. No sign-up, no downloads, no limits. See the About page or the FAQ for more.