One Rep Max (1RM) & Lift Percentage Calculator
Calculate your 1-Rep Max for Bench Press, Squat, and Deadlift along with training percentage loads (50% to 95%) using Epley & Brzycki formulas.
🏋️♂️ Lift Information
60
80
100
120
kg
3 Reps
5 Reps
8 Reps
10 Reps
Reps
90% 1RM (Heavy Strength)
84.0 kg
80% 1RM (Hypertrophy)
74.7 kg
70% 1RM (Speed / Volume)
65.3 kg
60% 1RM (Endurance / Warmup)
56.0 kg
Epley vs Brzycki 1RM Formulas
Epley Formula: 1RM = Weight × (1 + Reps / 30)
Brzycki Formula: 1RM = Weight × (36 / (37 - Reps))
Brzycki Formula: 1RM = Weight × (36 / (37 - Reps))