How it works
The Epley formula estimates your one-rep max from a sub-maximal lift. The result uses the same unit as the weight you entered.
1RM ≈ Weight × (1 + Reps ÷ 30)
One Rep Max Calculator
Estimate the maximum weight you can lift once.
Estimate the maximum weight you can lift once.
The Epley formula estimates your one-rep max from a sub-maximal lift. The result uses the same unit as the weight you entered.
1RM ≈ Weight × (1 + Reps ÷ 30)