How it works
The method behind the number.
Estimate exercise heart-rate zones from age. This tool explains the calculation so you can adjust the assumptions to match your situation.
Your formula appears here after the calculator loads.
Health & fitness
Target heart rate calculator
Estimate exercise heart-rate zones from age.
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Your result
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Enter your numbers to see the answer.
Target heart rate calculator guide
What does this calculator help you figure out?
Estimate exercise heart-rate zones from age. This free online calculator is designed for people who need a quick, transparent estimate rather than a black-box answer. Enter age, review the assumptions, and adjust the values to match your project or situation.
How is the result calculated?
Estimated maximum heart rate = 220 − age; training zones are percentages of that estimate.
Example and assumptions
For a useful first estimate, start with the sample values already shown in the calculator, then replace them with your own measurements or figures. Keep all dimensions in compatible units and round up where the result represents a quantity you must buy.
This is an educational screening estimate, not a diagnosis or a substitute for professional medical advice.
Common questions
Frequently asked questions
What does this target heart rate calculator calculate?
Estimate exercise heart-rate zones from age. The page shows the result, a breakdown, and the formula used so you can check the calculation.
What information do I need?
You will need age. The labels and units beside each field show what the calculator expects.
How accurate is the result?
This is an educational screening estimate, not a diagnosis or a substitute for professional medical advice. Accuracy depends on the quality of the inputs and the assumptions used by the underlying formula.
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