RPE Calculator

How hard does it feel? Translate your rating of perceived exertion into intensity, heart rate, and the other Borg scale.

0610
Quick anchor points (CR10)
2 — light jog • 4 — getting breathless • 6 — hard • 8 — very hard, barely talking • 10 — maximal sprint

In lifting, RPE 9 usually means “one more rep left in the tank.”

📈 Dual scales

Convert CR10 ↔ Borg 6-20.

💔 Heart-rate link

Estimate bpm from your max HR.

💪 Strength aware

Reps-in-reserve interpretation.

🌱 Zone planning

Know which zone you are training.

More training tools

Numbers that pace every workout.

FTP Calculator → Swim Pace One Rep Max

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