Heart Rate Zone Calculator
Computes the five classic training zones from your maximum heart rate (age formulas or a measured value), either as simple percentages of max or with the Karvonen method that accounts for your resting heart rate.
Read the full guide to this tool
Results
Notes
- Age formulas have a standard deviation of about ±10 bpm; a field test or lab test gives a much better max.
- Karvonen: target = resting + %intensity × (max − resting). It stretches the zones to match your personal reserve.
- This is an educational estimate, not medical advice; consult a professional for decisions about your health.
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