strength · Interactive tool
RPE ↔ %1RM Chart
Convert reps × RPE to %1RM and target weight (Helms/RTS table).
Interactive Tool
RPE ↔ Percentage 1RM Chart
Convert between Rate of Perceived Exertion (RPE) and percentage of 1RM at a given rep count. Built from Helms/RTS validated tables.
% of 1RM
81.1%
Calculated load
81.1 kg
5 × RPE 8
RPE 9 → 6
- 10Maximal — no more reps possible
- 9.5Could maybe do 1 more
- 91 rep in reserve
- 8.51–2 in reserve
- 82 in reserve
- 7.52–3 in reserve
- 73 in reserve
- 64+ in reserve · warm-up territory
How to use
Pick the rep count you plan to do, pick your target RPE (how hard the last rep should feel), and the chart shows the % of 1RM. Multiply by your 1RM to get the working weight.
RPE estimates are individual-specific and improve with practice. Beginners under-estimate RPE; experienced lifters within ±0.5 RPE.
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