Target Heart Rate

Find your moderate and vigorous exercise heart-rate zones.

Age (years)Resting heart rate (optional)Add it to use the more personal Karvonen method

Educational estimate only — not a diagnosis. Values are calculated in your browser and never stored. Discuss your results with a licensed clinician.

Frequently asked questions

How are the zones calculated?

Max heart rate is estimated as 220 minus your age. Moderate is 50–70% and vigorous 70–85%. Adding your resting rate uses the more personal Karvonen method.

Are these zones exact?

No — they're age-based estimates. Fitness, medications and health conditions matter. Slow down or stop if you feel unwell.

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