One rep max (1RM) calculator
- Epley
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- Brzycki
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- Lombardi
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- O'Conner
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- Average
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Training percentages
| %1RM | Weight | Reps target |
|---|
About this tool
One rep max (1RM) calculator is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.
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