Heart Rate Zones Calculator
Estimate heart rate zones from your measurements.
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What this tool does
Estimate heart rate zones from your measurements. Age-predicted maximum and Karvonen zones are estimates, not individual exercise clearance.
How to use the Heart Rate Zones Calculator
- Enter or select age.
- Enter or select resting heart rate (bpm).
- Read the calculated result; change any measurement to compare alternatives.
Formula
estimated maximum=208−0.7×age; Karvonen zone target=rest+(max−rest)×intensity
- age
- Age
- rest
- Resting heart rate (bpm)
Age-predicted maximum and Karvonen zones are estimates, not individual exercise clearance.
Worked example
For heart rate zones calculator, the following measurements illustrate the exact method: Age: 30; Resting heart rate (bpm): 60.
Inputs
- Age30
- Resting heart rate (bpm)60
Result
- Estimated maximum HR (bpm)187
Results explained
- Estimated maximum HR (bpm)
- Estimated maximum HR (bpm) from the formula above. Age-predicted maximum and Karvonen zones are estimates, not individual exercise clearance.
Frequently asked questions
estimated maximum=208−0.7×age; Karvonen zone target=rest+(max−rest)×intensity
Age-predicted maximum and Karvonen zones are estimates, not individual exercise clearance.
No. These are general-information estimates, not diagnosis, treatment, fertility advice or exercise clearance. Consult a qualified health professional.
Individual physiology, measurement technique and health conditions may cause large differences from model estimates.
No. BAC estimates never establish that driving is safe or legal; do not drive after drinking.