How to interpret this estimate

Estimate an exercise heart rate range with the Karvonen method. Maximum heart rate is estimated as 220 minus age.

When this result is useful

Use it to compare exercise-intensity zones before planning cardio sessions or discussing training limits with a clinician.

Common limitations

Target heart rate uses the Karvonen heart rate reserve method. Actual training zones can vary by health status and fitness level.

This calculator uses the selected inputs and the fixed formula behind the tool to produce an estimate. Review the units, assumptions, and result labels before using the output for planning.

Health results are screening or planning estimates only. They do not diagnose health status or replace advice from doctors, dietitians, or qualified healthcare professionals.

Read the medical disclaimer for more context.