One Rep Max Calculator
This tool estimates your one-repetition maximum (1RM) — the maximum weight you can lift for one complete repetition of a given exercise.
Result:
Formula |
Epley Formula: 1RM = weight × (1 + reps ÷ 30) |
Estimated One Rep Max |
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Estimated 90% 1RM |
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Estimated 80% 1RM |
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Estimated 70% 1RM |
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