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Maximum Heart Rate (Tanaka Formula) Calculator

HR_max = 208 − 0.7 · age (Tanaka 2001).

Estimate age-predicted maximum heart rate using the Tanaka equation HR_max = 208 − 0.7 · age, considered more accurate than the older 220 − age rule, particularly in adults over 40. Used to set Karvonen-style training zones.

Priya Venkatesan By Priya Venkatesan
Published Last reviewed 1 min read

Inputs

yr

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

HR_max = 208 − 0.7 · age.

In depth

Estimate age-predicted maximum heart rate using the Tanaka equation HR_max = 208 − 0.7 · age, considered more accurate than the older 220 − age rule, particularly in adults over 40. Used to set Karvonen-style training zones.