One Rep Max Calculator (1RM)
Estimate your one-rep max and training loads from a set you've lifted.
Result
Estimated 1RM
93.3
Load for ~5 reps
81.2
Load for ~8 reps
74.7
Load for ~10 reps
70.0
How it works
Epley: 1RM = weight × (1 + reps ÷ 30)
Estimates the maximum you could lift once, from a heavier-rep set, plus typical training loads. An estimate — warm up and lift safely.
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