Strength calculators
Free tools for lifters: estimate your max, plan your warm-up, turn RPE into weight — and settle who's actually strongest.
Who's actually stronger?
Compare two lifters pound for pound.
Open calculator1RM calculator
Estimate your one-rep max from any set.
Open calculatorDOTS & Wilks calculator
Your strength score, adjusted for bodyweight.
Open calculatorRPE calculator
Turn reps and RPE into weight — and back.
Open calculatorWarm-up calculator
Warm-up sets and plates for any working weight.
Open calculator