Lifting calculators, with the maths shown.

Strength training calculators, in kg and lb. Each one shows a worked result before you type anything, and the formula behind it. They use the same maths as the RIGOR app and are tested against the app's own cases.

1RM calculator: one rep max in kg or lb, with RIREstimate the most you could lift once, from a set you have already done.Warm-up sets calculator: weights and reps, kg or lbWarm-up sets from your first working weight.Barbell plate calculator: plates per side, kg and lbWhat to load on each side of the bar.

RIGOR does this maths for you, with the weights your gym has.

Download on the App Store

Know exactly what to lift.

Download on the App Store

7 days free on the yearly plan.