RPE Chart
Enter the weight, the reps and how hard the set felt, and see what share of your max you used – plus what load every rep and RPE combination corresponds to.
Calculate from RPE
Estimated 1RM
— kg
Relative intensity
Rows are reps, columns are RPE values. The cell matching your set is highlighted.
How this calculator works
RPE (rate of perceived exertion) describes how hard a set was on a scale tied to the reps you had left. RPE 10 means no further rep would have gone up, RPE 9 means one more, RPE 8 means two more. Half points such as 8.5 express uncertainty between one and two reps in reserve.
This gives a direct link to percentages. Five reps at RPE 8 means the set had two more reps in it – so the load corresponds to a seven-rep maximum. Once you know what share of your max a seven-rep set represents, you know that set's relative intensity.
The chart values are derived from the same 1RM formulas as the rest of the site: each cell is the percentage of max corresponding to reps plus reps in reserve, calculated as the average of five formulas. That keeps the chart consistent with the one-rep max calculator and the percentage chart. The values land within roughly one percentage point of the published charts commonly used in strength training.
The point of relative intensity is that a load does not mean the same thing every day. Tired, 85% might feel like RPE 9; rested, it might feel like RPE 7. RPE-based programming adjusts the load to the day rather than holding onto a percentage calculated weeks ago.
Frequently asked questions
Is RPE better than percentages?
They solve different problems. Percentages give predictable structure and work well when your max is current and your life is regular. RPE adapts to the day but takes experience – beginners usually overestimate their reps in reserve, and so underrate the RPE. Many programs use both: the percentage sets the starting load, the RPE decides when to stop.
Why do these values differ from other charts I've seen?
Several published RPE charts exist, based on different data sets and formulas. Differences are typically one to two percentage points. This chart is derived from the average of the 1RM formulas so that it stays consistent with the site's other calculators.
Does RPE work for every exercise?
Rating is most accurate in compound lifts where failure is unambiguous. In pulling movements and single-joint exercises there are often more reps left than it feels like, so the true RPE is lower than the rating.
Can you estimate a max from an RPE-rated set?
Yes, and that is RPE's most practical use. A set stopped short of failure is enough for an estimate as long as you know how many reps were left. This lets you track your max every week without ever attempting one.
Results are estimates and do not replace advice from a coach or healthcare professional.