One Rep Max Calculator
Estimate your one-rep max using Epley, Brzycki, and Lombardi formulas. Includes training zone percentages.
kg
reps
Estimated 1RM0 kgAverage of 3 formulas
Epley0 kg
Brzycki0 kg
Lombardi0 kg
Training Zones
Strength90%104 kg
Power80%93 kg
Hypertrophy70%81 kg
Endurance60%70 kg
Warm-up50%58 kg