Max Heart Rate Calculator
Estimate your maximum heart rate from your age.
The ceiling of your effort
Maximum heart rate is the fastest your heart can safely beat, and it sets the scale for training zones. It cannot be measured without a hard test, so age-based formulas give a working estimate.
For a 35-year-old, the classic 220-minus-age gives 185, while the more accurate Tanaka formula gives about 184. Individual maximums vary, so treat these as a guide for setting training zones.
Useful and private
The calculation runs in your browser, so nothing you enter is uploaded.
Frequently Asked Questions
How is max heart rate estimated?
From your age. The classic estimate is 220 minus age; the Tanaka formula, 208 minus 0.7 times age, is more accurate for older adults.
Why do the formulas differ?
The simple 220-minus-age rule overestimates for younger people and underestimates for older ones; Tanaka corrects for that.
Is this exact?
No. Individual maximums vary by 10 to 20 beats, so use it as a guide and a lab test for precision.
Browse the full set of free, private, in-browser tools.