Target heart rate calculator

Estimate the AHA target band from an age-predicted maximum heart rate of 220 minus age.

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Age (years)

Activity intensity

Answer

…

Estimate the AHA target band from an age-predicted maximum heart rate of 220 minus age.

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Formula and assumptions

The AHA percentages are general averages for adults, not measured exercise thresholds or a personalized safe maximum. Medication, heart conditions and fitness can change the appropriate target. Ask your clinician about a suitable range when these apply. This tool uses the AHA table age range of 20 to 70 years.

Automatic precision shows numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.

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Updated 2026-09-29

Using Target heart rate calculator

Estimate the AHA target band from an age-predicted maximum heart rate of 220 minus age.

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A worked example

For age (years) = 40, activity intensity = Moderate (50 to 70%), lower target (beats per minute) = 90.

Before you use the result

Example results for age (years)

These examples use Activity intensity: Moderate (50 to 70%). They are reference calculations, not recommended settings.

Age (years)	Lower target (beats per minute)
20	100
40	90

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