This table displays the estimated percentage of your 1-rep max based on the number of repetitions and the chosen formula.
| Reps | Epley %1RM | Brzycki %1RM | Lombardi %1RM |
|---|---|---|---|
| 1 | 96.77 | 100.00 | 100.00 |
| 2 | 93.75 | 97.22 | 93.30 |
| 3 | 90.91 | 94.44 | 89.60 |
| 4 | 88.24 | 91.67 | 87.06 |
| 5 | 85.71 | 88.89 | 85.13 |
| 6 | 83.33 | 86.11 | 83.60 |
| 7 | 81.08 | 83.33 | 82.32 |
| 8 | 78.95 | 80.56 | 81.23 |
| 9 | 76.92 | 77.78 | 80.27 |
| 10 | 75.00 | 75.00 | 79.43 |
| 11 | 73.17 | 72.22 | 78.68 |
| 12 | 71.43 | 69.44 | 78.00 |
| 13 | 69.77 | 66.67 | 77.38 |
| 14 | 68.18 | 63.89 | 76.80 |
| 15 | 66.67 | 61.11 | 76.28 |
| 16 | 65.22 | 58.33 | 75.79 |
| 17 | 63.83 | 55.56 | 75.33 |
| 18 | 62.50 | 52.78 | 74.90 |
| 19 | 61.22 | 50.00 | 74.49 |
| 20 | 60.00 | 47.22 | 74.11 |
This One Rep Max Calculator helps you estimate your 1RM using three popular formulas: Epley, Brzycki, and Lombardi. It also provides a relative intensity chart to guide your strength training.
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