RPE Calculator

Rate of Perceived Exertion - Measure your workout intensity

Select RPE Scale
Rate Your Exertion (6-20)
6 (No exertion) 13 (Somewhat hard) 20 (Maximal)
Somewhat hard - Moderate intensity, sustainable pace
RPE Results & Interpretation
13
Borg Scale (6-20)
Intensity Level
Moderate
% of Max Heart Rate (approx)
65-74%
Training Zone
Aerobic / Endurance
Moderate intensity. Good for building endurance and aerobic fitness.

Borg Scale (6-20) Reference

  • 6-8: Very light (resting)
  • 9-11: Light (easy walking)
  • 12-14: Moderate (brisk walk)
  • 15-17: Vigorous (running)
  • 18-20: Very hard (sprinting)

Modified Borg (0-10) Reference

  • 0: No exertion at all
  • 1-2: Very light
  • 3-4: Light to moderate
  • 5-6: Moderate to heavy
  • 7-8: Very heavy
  • 9-10: Maximal exertion

How to Use RPE

  • Listen to your body during exercise
  • Combine with heart rate for accuracy
  • Use to set training intensity
  • Track progress over time
  • Adjust based on how you feel

Heart Rate Conversion

  • Borg 6-20 × 10 = HR (approx)
  • RPE 13 = ~130 bpm
  • RPE 15 = ~150 bpm
  • Modified RPE × 10 = % of max HR
  • RPE 5 = ~50% max HR