Health & Fitness
🏋️ One Rep Max Calculator
Estimate one-repetition maximum from the weight lifted and repetitions completed.
FITNESS TOOL
One Rep Max Calculator
Estimate one-repetition maximum from a submaximal lift.
Estimated one-rep max76 kg
90%68.4 kg
85%64.6 kg
For informational use only. Formulas provide general estimates, not diagnoses or medical advice.
About this calculator
This calculator is designed to provide clear, easy-to-understand results. Enter your values, review the results, and calculate again whenever you need to.
Frequently asked questions
Should I test my one-rep max directly?
The formula estimates a maximum and does not replace safe assessment. Avoid maximal tests without experience, proper technique and supervision where appropriate.