ACTIVITY AND TRAINING ESTIMATES
Heart Rate Zone Calculator
Estimate an age-predicted maximum heart rate and target beats-per-minute range using editable intensity percentages.
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Enter your values and select Calculate. Your result stays on this device.
How it works
Age-predicted maximum = 220 − age; target boundaries = predicted maximum × selected intensity percentages.
Assumptions
The 220 − age method is a broad population estimate. Medication, health status, fitness, environment, and individual measured maximum can materially change an appropriate range.
About this calculator
This target-heart-rate calculator keeps the age formula and intensity percentages visible. It is a broad exercise reference, not a diagnosis or individualized training prescription.
How to use it
- Enter an adult age.
- Review or adjust the lower intensity percentage.
- Review or adjust the upper percentage so it remains above the lower value.
- Compare the estimate with clinician or coach guidance when personal health or performance matters.
Use case
heart rate zone calculator: a clear planning check
Use the broad 220 − age reference and visible target percentages without treating the result as medical clearance or individualized training advice.
Estimate an adult age-predicted target heart-rate range with editable intensity percentages.
Source and update
Last reviewed: 2026-08-22
American Heart Association — Target Heart Rates ChartFrequently asked questions
How is maximum heart rate estimated?
This page uses the common age-predicted reference of 220 minus age.
Is maximum heart rate the same for everyone of one age?
No. It is a broad estimate and individual measured values can differ substantially.
Can medication change heart rate targets?
Yes. Some medications and health conditions affect heart-rate response; seek individualized clinical guidance.
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