Accurate RPE Calculator for Strength Training

Use our RPE calculator to determine optimal training weights based on the Rate of Perceived Exertion scale. RPE is a powerful tool for auto-regulating your training intensity, allowing you to adjust weights based on daily readiness and recovery levels.

RPE (Rate of Perceived Exertion) in weightlifting refers to how hard a set feels on a scale from 1-10. An RPE of 10 means maximal effort with no reps left in reserve, RPE 9 means you could have done one more rep, RPE 8 means two more reps, and so on. This system helps powerlifters and strength athletes optimize training intensity based on daily performance capacity.

Our RPE calculator helps you determine appropriate weights across different rep ranges and RPE targets based on your recent performance. For example, if you know you can lift 225 lbs for 5 reps at RPE 8, this calculator will tell you what weight to use for 3 reps at RPE 9, or any other combination. This is invaluable for planning training sessions that provide optimal stimulus without excessive fatigue.

The Gravitus app allows you to track your RPE for every set, helping you make data-driven decisions about your training. The app will automatically calculate your estimated 1RM based on your RPE inputs and show your progression over time, making it easy to ensure continued progress while managing fatigue effectively.

This is your theoretical one-rep max based on your performance at the specified RPE.

This chart shows weights that would feel equivalent to your input set (at different RPE values). For example, if you entered 180 lbs at 5 reps RPE 8, this chart shows what weights would feel just as hard but at different RPE values:

Use the selectors below to find the perfect weight for your next set at any rep and RPE combination. Both the chart and the Target Weight update automatically when you change these values: