One Rep Max (1RM) Calculator
Estimate your one rep max from any weight and rep count. See training percentages for all rep ranges.
Estimated One-Rep Max
212 lbs
Epley Formula
215.8 lbs
Brzycki Formula
208.1 lbs
Percentage Chart
| 100% (1 rep) | 212 lbs |
| 95% (2 reps) | 201 lbs |
| 90% (3-4 reps) | 191 lbs |
| 85% (4-5 reps) | 180 lbs |
| 80% (6 reps) | 170 lbs |
| 75% (8 reps) | 159 lbs |
| 70% (10 reps) | 148 lbs |
| 65% (12 reps) | 138 lbs |
| 60% (15+ reps) | 127 lbs |
Training Recommendations
| Strength (1-5 reps) | 180 - 201 lbs |
| Hypertrophy (6-12 reps) | 138 - 170 lbs |
| Endurance (12+ reps) | 106 - 138 lbs |
Estimated 1RM is an average of Epley and Brzycki formulas. Accuracy decreases above 10 reps. These are estimates only -- always use a spotter and proper form when testing maximal lifts.
Use the One Rep Max (1RM) Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.
Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.
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