🏆 One-Rep Max Calculator
Estimate your 1RM from a submaximal lift, then get a full percentage breakdown for programming your training at any rep range.
Your Estimated 1RM
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One-Rep Max (average of formulas)
Training Percentages
1RM estimates are most accurate when calculated from 3–6 rep sets. Accuracy decreases with higher rep counts. Always warm up thoroughly before attempting near-maximal efforts.