RPE Calculator

RPE (Rating of Perceived Exertion) is a scale from 6 to 10 used to measure perceived effort during resistance training. Originally created by Mike Tuchscherer for powerlifting, it allows you to adjust loads based on how you feel on any given day, rather than using fixed percentages. • RPE 6: Light weight, many reps in reserve • RPE 7: Moderate weight, ~3 reps in reserve • RPE 8: Heavy weight, ~2 reps in reserve • RPE 9: Very heavy, ~1 rep in reserve • RPE 10: Maximum effort, concentric failure

• Start with RPE 7-8 for training volume • Use RPE 9-10 only for strength tests or peak sets • Perception improves with experience — practice for 4-6 weeks • Adjust weight between sets based on target RPE • If RPE is higher than planned, reduce the weight • Log your RPEs to identify patterns over time

• Fixed percentages don't account for daily variation (sleep, stress, nutrition) • RPE auto-adjusts — good days = more load, bad days = less • Ideal for intermediate and advanced athletes who know their body • Beginners should start with percentages and gradually transition to RPE • Many modern programs combine both: "4×5 @80% RPE 8"