One-Rep Max (1RM) Calculator

Estimate your maximum single-repetition lift strength using validated sports science formulas (Brzycki, Epley, Lombardi).

Estimated One-Rep Maximum (1RM)
116 kg
Brzycki: 113 kg | Epley: 117 kg | Lombardi: 117 kg

Training Load Percentages

95% 1RM
110 kg
90% 1RM
104 kg
85% 1RM
99 kg
80% 1RM
93 kg
75% 1RM
87 kg
70% 1RM
81 kg
65% 1RM
75 kg
60% 1RM
70 kg
50% 1RM
58 kg