RPE Calculator
Enter your one-rep max and get working weights for RPE 5–10 across 1–7 reps.
Values are estimates from a standard RPE chart; use as a guide.
What is RPE?
In powerlifting, RPE (Rate of Perceived Exertion) is tied directly to Reps in Reserve (RIR). Formula: RPE = 10 − RIR
- RPE 10 Maximum effort. You could complete 0 more reps; you hit technical or muscular failure.
- RPE 9.5 You couldn't do another full rep, maybe a partial or grindy rep.
- RPE 9 You had 1 clean rep left in the tank.
- RPE 8.5 About 1 to 2 reps left (closer to 1.5).
- RPE 8 You had 2 clean reps left in reserve.
- RPE 7.5 About 2 to 3 reps left.
- RPE 7 You had 3 clean reps left in reserve.
- RPE 6 and below Light, explosive, or warm-up/technique work (4+ reps left).