Heart Rate Calculator
Calculate estimated maximum heart rate and Zones 1–5 together, with resting-heart-rate based zones too.
What this calculator answers
The Heart Rate Calculator uses the requested values to calculate the requested result. The core method is Related formulas are calculated together from shared inputs.. This makes the assumptions visible so you can check whether the inputs match your situation.
How to get a useful result
Enter measurements using the units shown and use recent, representative values.
How to interpret it
Health and fitness formulas are screening or planning estimates, not a diagnosis or individualized medical recommendation.
Before relying on the number
Recheck unusual inputs, confirm units and compare the result with any official quote, statement, specification or rule that applies to the real decision. Small changes in rates, time periods or measurements can materially change some results.