RPE calculator
Did a set and rated the RPE? I'll work out your estimated max and suggest a weight for the next set with a different rep count.
RPE chart: % of max
| RPE \ reps | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 100.0 | 93.8 | 90.9 | 88.2 | 85.7 | 83.3 | 81.1 | 78.9 | 76.9 | 75.0 | 73.2 | 71.4 |
| 9.5 | 95.2 | 92.3 | 89.6 | 87.0 | 84.5 | 82.2 | 80.0 | 77.9 | 75.9 | 74.1 | 72.3 | 70.6 |
| 9 | 93.8 | 90.9 | 88.2 | 85.7 | 83.3 | 81.1 | 78.9 | 76.9 | 75.0 | 73.2 | 71.4 | 69.8 |
| 8.5 | 92.3 | 89.6 | 87.0 | 84.5 | 82.2 | 80.0 | 77.9 | 75.9 | 74.1 | 72.3 | 70.6 | 69.0 |
| 8 | 90.9 | 88.2 | 85.7 | 83.3 | 81.1 | 78.9 | 76.9 | 75.0 | 73.2 | 71.4 | 69.8 | 68.2 |
| 7.5 | 89.6 | 87.0 | 84.5 | 82.2 | 80.0 | 77.9 | 75.9 | 74.1 | 72.3 | 70.6 | 69.0 | 67.4 |
| 7 | 88.2 | 85.7 | 83.3 | 81.1 | 78.9 | 76.9 | 75.0 | 73.2 | 71.4 | 69.8 | 68.2 | 66.7 |
| 6.5 | 87.0 | 84.5 | 82.2 | 80.0 | 77.9 | 75.9 | 74.1 | 72.3 | 70.6 | 69.0 | 67.4 | 65.9 |
| 6 | 85.7 | 83.3 | 81.1 | 78.9 | 76.9 | 75.0 | 73.2 | 71.4 | 69.8 | 68.2 | 66.7 | 65.2 |
Row — RPE, column — reps in the set, cell — percent of estimated max. The formula switch above changes it.
Where these numbers come from
RPE rates how hard a set was, up to 10: 10 — not one more rep, 9 — one left in the tank, 8 — two. I add the reps in reserve to the reps you did and work out your estimated max with the same formula the diary uses (Epley or Brzycki, reserve capped at 5 reps).
The chart is that formula run backwards: percent of max = 1 ÷ e1RM of a 1 kg set. It's not someone else's table, it's my arithmetic: real percentages differ by a few points from person to person, so the next-set weight is a starting point, not an order.
Add RPE next to a set in the bot — I'll adjust your estimated max for the reserve myself.