Free · Health · Fitness Performance
One Rep Max Calculator
Estimate one-repetition maximum and training loads from weight lifted and completed repetitions.
- Checked formula
- Private in your browser
- No signup
Result
Your calculation
- Estimated one-rep max
- 99.7 kg Average of three equations
- Epley / Brzycki / Lombardi
- 101.3 / 99.3 / 98.5 kg
- 80% training load
- 79.8 kg
- 70% training load
- 69.8 kg
Estimates become less reliable at high rep counts. Use safe technique and appropriate supervision for heavy attempts.
How to use this calculator
- Enter current measurements as accurately as practical.
- Calculate to see the estimate, range, and method details.
- Use the result as context, and discuss health decisions with a qualified clinician.
Use the result with context
Health results are educational estimates, not a diagnosis or treatment recommendation. A qualified clinician can interpret measurements in the context of your health.