RPE calculator
Enter a set you just did and how hard it felt (RPE) to estimate your max — then get the right weight for your next set.
Your set
RPE 10 = no reps left · 9 = one more · 8 = two more · 7 = three more
Enter your numbers to see the result.
RPE chart
Percentage of your one-rep max for each number of reps and RPE. The chart covers 1 to 10 reps at RPE 6 to 10.
| Reps | RPE 10 | RPE 9.5 | RPE 9 | RPE 8.5 | RPE 8 | RPE 7.5 | RPE 7 | RPE 6.5 | RPE 6 |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 100% | 98% | 96% | 94% | 92% | 90.5% | 89% | 87.5% | 86% |
| 2 | 95% | 93.5% | 92% | 90.5% | 89% | 87.5% | 86% | 84.5% | 83% |
| 3 | 92% | 90.5% | 89% | 87.5% | 86% | 85% | 84% | 82.5% | 81% |
| 4 | 89% | 87.5% | 86% | 85% | 84% | 82.5% | 81% | 80% | 79% |
| 5 | 86% | 85% | 84% | 82.5% | 81% | 80% | 79% | 77.5% | 76% |
| 6 | 84% | 82.5% | 81% | 80% | 79% | 77.5% | 76% | 75% | 74% |
| 7 | 81% | 80% | 79% | 77.5% | 76% | 75% | 74% | 73% | 72% |
| 8 | 79% | 77.5% | 76% | 75% | 74% | 73% | 72% | 70.5% | 69% |
| 9 | 76% | 75% | 74% | 73% | 72% | 70.5% | 69% | 68% | 67% |
| 10 | 74% | 73% | 72% | 70.5% | 69% | 68% | 67% | 66% | 65% |
How it works
RPE (rating of perceived exertion) rates a set by how many more reps you could have done: RPE 10 means none, RPE 8 means two. Because reps in reserve and percentage of max go hand in hand, one set and its RPE are enough to estimate your one-rep max.
The chart is the widely used RTS-style table. It's an average — your own numbers may differ a little, especially for sets with many reps.
Track every lift in Capazity
Log your sets, watch your maxes climb and let the app calculate the weights for every session.