Estimated One Rep Max
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Training Percentage Table
| % of 1RM | Weight |
|---|
Free One Rep Max Calculator
Estimate your one-rep max and training percentages using the Epley formula.
1RM formulas are most accurate in the 1-10 rep range and lose accuracy at very high rep counts. Use the percentage table to program training weights — e.g. 80% of your 1RM is a common weight for strength-building sets of 5-6 reps.
Frequently Asked Questions
How accurate is the Epley formula?
Typically within a few percent for reps in the 1-10 range; accuracy drops for higher rep sets.