Lunia · Free tools
Resting Heart Rate Calculator
Use resting and maximum heart rates to calculate heart-rate reserve bands.
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How this calculator works
Karvonen targets equal resting HR + intensity × (maximum HR − resting HR). Five bands span 50% to 100% of heart-rate reserve in 10 percentage-point intervals. The resting measurement is also displayed for reference.
A worked example
Measured resting heart rate (bpm): 60 · Measured maximum heart rate (bpm): 190
- Resting heart rate
- 60 bpm
- Easy
- 125 to 138 bpm
- Endurance
- 138 to 151 bpm
- Moderate
- 151 to 164 bpm
- Hard
- 164 to 177 bpm
- Very hard
- 177 to 190 bpm
These are illustrative inputs, not personal recommendations.
Common questions
How should I measure resting heart rate?
Use a consistent rested state and average several readings. Do not use a post-workout pulse as your resting measurement.
How should I use the result?
A single resting heart rate does not diagnose cardiovascular fitness or disease. Medication, illness, stress and measurement conditions affect these numbers. Use an appropriately obtained maximum heart rate.
Sources & method references
Formula-based results are estimates, not individual medical advice.