Training tool
RPE percentage converter
Translate target effort into practical percentages so your next set matches the intent of the session.
Example output
Sample chart answers
These are fixed examples of how the conversion works. Use the in-app tool when you want editable inputs.
RPE 8
86%
90%
RPE 8.5
Best for
Lifters running percentage or RPE-based programming
Use it to
Convert an effort target into a rough % of 1RM
Output
A fast RPE-to-% answer plus a reference chart
Methodology
How this page was put together
These pages are reviewed against IronFlow's current public program library, released app capabilities, and public training references.
Updated
June 30, 2026
Built from
IronFlow's current program library, import flows, released calculators, and app capabilities as of June 30, 2026.
Use this page for
Quick reference and example outputs when you want to understand the calculation before using it in your training flow.
Note
This public page is content-only. The editable calculator stays inside IronFlow.
Where this converter helps most
Bridge coaching language and loading
If a set calls for RPE 8, you still need a workable bar weight. This tool closes that gap.
Adjust on the fly
When recovery or readiness changes, RPE-based loading is often easier to adapt than fixed percentages alone.
Keep intent consistent
The point is not a perfect formula. It is getting close enough that the set feels like the session was meant to feel.
RPE converter FAQ
Is one RPE percentage chart universally correct?
No. Charts are approximations, but they are still useful for quick decisions and for staying consistent within a program.
Why does the tool return the nearest RPE for a percentage?
Because most percentage inputs will sit between common chart rows, so the closest matching effort target is usually the most practical answer.
Should I trust the chart over bar speed or feel?
No. Use the chart as a guide, then adjust based on how the warmups and working sets actually move that day.
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