DIY calculator

DIY One Rep Max

Estimate one-repetition maximum strength from a submaximal set using the Epley formula.

Inputs

Fill in your scenario

Result

Computed for your scenario

Estimated 1RM (kg) 0
Working weights ~0 kg × 3, ~0 kg × 5
FAQ

Common questions

How is 1RM estimated?
Epley: weight × (1 + reps ÷ 30). Use a single set of 2-10 reps near failure for best accuracy.