RPE ↔ Percentage Converter
Convert between RPE and percentage of 1RM using the standard RTS/Tuchscherer chart. See reps in reserve and target weight at a glance.
% of 1RM
81.1%
Reps in Reserve
2
Full RPE Chart
| Reps | 10 | 9.5 | 9 | 8.5 | 8 | 7.5 | 7 | 6.5 | 6 |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 100% | 97.8% | 95.5% | 93.9% | 92.2% | 90.7% | 89.2% | 87.8% | 86.3% |
| 2 | 95.5% | 93.9% | 92.2% | 90.7% | 89.2% | 87.8% | 86.3% | 85% | 83.7% |
| 3 | 92.2% | 90.7% | 89.2% | 87.8% | 86.3% | 85% | 83.7% | 82.4% | 81.1% |
| 4 | 89.2% | 87.8% | 86.3% | 85% | 83.7% | 82.4% | 81.1% | 79.9% | 78.6% |
| 5 | 86.3% | 85% | 83.7% | 82.4% | 81.1% | 79.9% | 78.6% | 77.4% | 76.2% |
| 6 | 83.7% | 82.4% | 81.1% | 79.9% | 78.6% | 77.4% | 76.2% | 75.1% | 73.9% |
| 7 | 81.1% | 79.9% | 78.6% | 77.4% | 76.2% | 75.1% | 73.9% | 72.3% | 70.7% |
| 8 | 78.6% | 77.4% | 76.2% | 75.1% | 73.9% | 72.3% | 70.7% | 69.4% | 68% |
| 9 | 76.2% | 75.1% | 73.9% | 72.3% | 70.7% | 69.4% | 68% | 66.7% | 65.3% |
| 10 | 73.9% | 72.3% | 70.7% | 69.4% | 68% | 66.7% | 65.3% | 64% | 62.6% |
| 11 | 70.7% | 69.4% | 68% | 66.7% | 65.3% | 64% | 62.6% | 61.3% | 59.9% |
| 12 | 68% | 66.7% | 65.3% | 64% | 62.6% | 61.3% | 59.9% | 58.6% | 57.2% |
How It Works
This converter uses the RPE (Rate of Perceived Exertion) scale developed by Mike Tuchscherer for Reactive Training Systems (RTS). Each RPE value maps to a percentage of your 1RM based on reps performed:
- RPE 10 — Maximum effort, no reps left in reserve (0 RIR)
- RPE 9 — Could have done 1 more rep (1 RIR)
- RPE 8 — Could have done 2 more reps (2 RIR)
- RPE 7 — Could have done 3 more reps (3 RIR)
Half-step values (e.g., RPE 8.5) indicate you might have had another rep. The chart updates live as you adjust RPE and rep count.
Why It Matters
RPE-based training lets you autoregulate intensity based on how you feel each day — instead of rigidly following percentage prescriptions that don't account for sleep, stress, or recovery. SensAI uses RPE alongside your wearable recovery data to fine-tune daily training loads.
SensAI autoregulates your training automatically
Connect your wearables and let AI fine-tune daily training loads using RPE alongside your recovery data.
