One Rep Max (1RM) Calculator
0Free one rep max calculator: estimate the maximum weight you can lift for a single rep from a set you already did, using several proven formulas (Epley, Brzycki, Lombardi), plus a full percentage training table.
Training percentages of 1RM
Estimates are most accurate for sets of 1-10 reps. Warm up properly and use a spotter when testing heavy lifts.