RPE Calculator
Calculate Rate of Perceived Exertion (RPE) for weightlifting. Estimate your one-rep max and find optimal working weights based on RPE and reps in reserve (RIR).
RPE Calculator
Calculator Mode
RPE Scale Reference
RPE 10Max effort, no reps left (0 RIR)
RPE 9Could do 1 more rep (1 RIR)
RPE 8Could do 2 more reps (2 RIR)
RPE 7Could do 3 more reps (3 RIR)
Formula: RIR = 10 - RPE
What is RPE?
RPE stands for Rate of Perceived Exertion, a subjective scale used to measure exercise intensity based on how hard the exercise feels. Popularized by Mike Tuchscherer of Reactive Training Systems (RTS), the RPE scale runs from 1 to 10, where 10 represents maximum effort with no reps remaining.