MarocGym calculators
One Rep Max Calculator
Estimate your one-repetition maximum from a completed training set.
✓ Free tool✓ Your measurements are not stored.
One Rep Max Calculator
Use a controlled set with sound technique.
These are educational estimates and may vary with health, age and activity. Consult a qualified professional when needed.
How does it work?
The Epley formula estimates 1RM: load × (1 + repetitions ÷ 30).
Important notes
This is not a direct strength test and is less reliable at high repetitions.
One Rep Max Calculator
Estimate your one-rep maximum from the weight lifted and repetitions completed.