One Rep Max Calculator
Estimate one-repetition maximum with Epley and Brzycki formulas from a submaximal lift.
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How to use One Rep Max Calculator
- Enter the information requested for one rep max calculator.
- Review inputs and units, then run the tool.
- Check the result and copy or download it for your workflow.
How One Rep Max Calculator works
Estimate one-repetition maximum with Epley and Brzycki formulas from a submaximal lift. Results are based only on the inputs you provide. This tool does not access or verify private account, search ranking or analytics data.
Use the result carefully
Check output against the source data and destination platform requirements. Estimates and previews are not official measurements or professional advice. For regulated, financial, health or safety decisions, confirm assumptions with an appropriate qualified source.
Example input
Lift 80 kg for 8 reps
How do I use the one rep max calculator?
Enter the relevant inputs and select Run. Estimate one-repetition maximum with Epley and Brzycki formulas from a submaximal lift.
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