Max Heart Rate Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter your age.
- Press Calculate for your estimated maximum heart rate and training zones.
How it works
The common estimate is 220 minus your age. Training zones are percentages of that maximum — moderate exercise sits around 50–70% and vigorous around 70–85%.
Worked example
Age 40. Max heart rate ≈ 180 bpm; a moderate zone is about 90–126 bpm.
Frequently asked questions
How accurate is 220 − age?
It's a rough average — real maximums vary by roughly ±10–15 bpm. A supervised test is more accurate.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.