Heart Rate Zone Calculator

Enter the requested values and units to calculate the numeric result using the stated formula.

Max-HR formula Tanaka and HUNT outperform 220-age in adults over 40. Pick whichever you prefer.

Age

years

Resting Heart Rate

bpm

Measure in the morning before getting up

I don't know my resting heart rate (use default 70 bpm)

Max Heart Rate

Heart Rate Reserve

Calculation only

The output is produced only from the values, units, and formula shown by this tool.

This tool does not compare the number with a clinical range, assign a category, diagnose a condition, or recommend an action. Check that your input units match the form and use your laboratory report or a qualified medical professional for interpretation.