RPE Calculator (e1RM)
Enter the weight, reps and RPE of a set to estimate your one-rep max, then read training weights off the RPE chart.
Estimate Your 1 Rep Max
Hard - could do 2 more reps
Estimated 1 Rep Max
121.7 kg
Epley: 123.3 kg | Brzycki: 120.0 kg
RPE / Rep Table
Based on your estimated 1RM of 121.7 kg
| Reps | RPE 10.0 | RPE 9.5 | RPE 9.0 | RPE 8.5 | RPE 8.0 | RPE 7.5 | RPE 7.0 | RPE 6.5 | RPE 6.0 |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 121.7 | 119.0 | 116.2 | 114.2 | 112.2 | 110.4 | 108.5 | 106.8 | 105.0 |
| 2 | 116.2 | 114.2 | 112.2 | 110.4 | 108.5 | 106.8 | 105.0 | 103.4 | 101.8 |
| 3 | 112.2 | 110.4 | 108.5 | 106.8 | 105.0 | 103.4 | 101.8 | 100.3 | 98.7 |
| 4 | 108.5 | 106.8 | 105.0 | 103.4 | 101.8 | 100.3 | 98.7 | 97.2 | 95.6 |
| 5 | 105.0 | 103.4 | 101.8 | 100.3 | 98.7 | 97.2 | 95.6 | 94.2 | 92.7 |
| 6 | 101.8 | 100.3 | 98.7 | 97.2 | 95.6 | 94.2 | 92.7 | 91.4 | 89.9 |
| 8 | 95.6 | 94.2 | 92.7 | 91.4 | 89.9 | 88.0 | 86.0 | 84.4 | 82.7 |
| 10 | 89.9 | 88.0 | 86.0 | 84.4 | 82.7 | 81.2 | 79.4 | 77.9 | 76.2 |
| 12 | 82.7 | 81.2 | 79.4 | 77.9 | 76.2 | 74.6 | 72.9 | 71.3 | 69.8 |
What is RPE?
RPE (rating of perceived exertion) rates how hard a set was on a 1–10 scale. In powerlifting it is usually tied to reps in reserve (RIR): RPE 10 is a maximal set with nothing left, RPE 9 means one more rep was possible, RPE 8 two more, and so on. Coaches use RPE to autoregulate training loads from day to day.
How the estimate works
Reps in reserve (10 − RPE) are added to the reps you performed, and the result is run through two common one-rep-max formulas: Epley (weight × (1 + reps / 30)) and Brzycki (weight × 36 / (37 − reps)). The estimate shown is the average of the two. The RPE chart applies percentages from Mike Tuchscherer's RPE chart to that estimate.
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