HRmax calculator
Estimate your maximum heart rate with three formulas: Tanaka, Fox and Gellish. See how the results differ and when a real test is worth doing.
Everything is computed in your browser — the values you enter are never sent or stored.
Result
- Tanaka (recommended)
- 184 bpm
- Fox (220 − wiek)
- 185 bpm
- Gellish
- 183 bpm
The app default — more accurate for older athletes than "220 − age".
This is a population estimate, not a measurement. Real HRmax can be 10-20 bpm higher or lower and differs between sports — for many people it is higher when running than cycling. Threshold-test zones are more accurate for planning.
How we calculate this
- HRmax (Tanaka) = 208 − 0.7 × age
- HRmax (Fox) = 220 − age
- HRmax (Gellish) = 207 − 0.7 × age
The formulas come from the app’s domain specification and are covered by unit tests. The same code powers zones inside the app.
Want these numbers to feed your plan automatically?
In the app, zones update after every test and the plan adapts to your data and how you feel.
This calculator is informational and does not replace a doctor, physiotherapist or coach. Results based on population formulas are estimates, not measurements. Read the full disclaimer →