RPE & Reps in Reserve (RIR) Weight Calculator
Convert Rate of Perceived Exertion (RPE 6–10) and Reps in Reserve (RIR) into exact percentage of 1RM and target training weight for powerlifting, bodybuilding, and strength training.
Lifter 1RM & Target Set Parameters
kg
Reps
Working set reps (1 to 12).
Target Training Weight
2 REPS IN RESERVE
121.7 kg
Recommended bar load: 122.5 kg (rounded to nearest 2.5 kg plate)
Intensity (% of 1RM)
81.1%
Standard RTS conversion
Reps in Reserve (RIR)
2.0 Reps
Clean stopping point before failure
Load Range Matrix for Target Reps
RPE 10.0 (Max Effort / 0 RIR):
129.5 kg (86.3%)
RPE 9.0 (Heavy / 1 RIR):
125.6 kg (83.7%)
RPE 8.0 (Moderate / 2 RIR):
121.7 kg (81.1%)
RPE 7.0 (Speed / 3 RIR):
117.9 kg (78.6%)