Heart Rate Max Calculator
Calculate your maximum heart rate using three scientific formulas and view training zones for exercise.
Maximum Heart Rate Calculator
Your maximum heart rate (HRmax) is the highest rate your heart can safely beat during exercise. Knowing it helps you train in the right zone for your goals.
Formulas Used
- Tanaka: 208 − 0.7 × age — considered more accurate for older adults
- Haskell (Fox): 220 − age — the most widely used traditional formula
- Gellish: 207 − 0.7 × age — validated in clinical studies
Frequently Asked Questions
Which formula is most accurate?
Tanaka and Gellish are generally considered more accurate than the traditional 220-age formula, especially for older adults.
Should I train at max heart rate?
Training at maximum heart rate should only be done in short intervals. Most training should be in Zones 2–4.