Free tools · Strength & Gym
RPE to 1RM Calculator
Free · No signupTurn a set with RPE into an estimated one-rep max. Reps in reserve become extra reps in the 1RM formula.
Your stats
Estimated 1RM
268.3lb
Average of Epley and Brzycki
| % 1RM | Load | Typical reps |
|---|---|---|
| 100% | 268.3 lb | 1 |
| 95% | 254.9 lb | 2 |
| 90% | 241.5 lb | 3–4 |
| 85% | 228.1 lb | 5–6 |
| 80% | 214.6 lb | 6–8 |
| 75% | 201.2 lb | 8–10 |
| 70% | 187.8 lb | 10–12 |
| 65% | 174.4 lb | 12–15 |
| 60% | 161 lb | 15+ |
| 55% | 147.6 lb | 15+ |
| 50% | 134.2 lb | 15+ |
Questions
What is RPE 8?
About 2 reps in reserve — you could have done two more. That is a common hard working-set target, not a medical load.
Is this medical advice?
No. These calculators are for wellness and fitness planning only. Talk to a physician before changing how you eat or train.
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Hammr Fitness is for wellness and fitness purposes only. It is not medical advice. Consult a physician before starting any exercise or nutrition program. If you have a medical emergency, call emergency services.