Max Heart Rate Calculator
Maximum heart rate is the fastest your heart can beat in hard effort. It can only be measured in a supervised test, so formulas give an estimate from age.
- Free
- Works offline after your first visit
- Saves on this device
- No sign-up
- Updated
How it works
The Tanaka formula, from a 2001 analysis of many studies, estimates maximum heart rate as 208 minus 0.7 times age.
The older rule, 220 minus age, is shown for comparison. It is a simple rule and can miss by many beats in either direction, especially for older adults.
Worked example
At age 40, the Tanaka estimate of maximum heart rate is 180 beats a minute. The older 220 rule gives 180.
Questions
Is this my real maximum?
No. It is an estimate. A true maximum needs a supervised test, and the real figure can differ from the estimate by ten beats or more.
Why not use 220 minus age?
That rule came from a simple guess and has been tested less well. The Tanaka formula was built from more data, so many people prefer it.
Can I train by this number?
Zones built on an estimate are only a rough guide. Pay attention to how you feel, and ask a doctor if you have a heart condition.
More like this
- Karvonen Heart Rate CalculatorTarget heart rate from resting rate and effort.
- Target Heart Rate CalculatorHeart rate zones from your age.
- One Rep Max CalculatorEstimated heaviest single lift from a set.
- Rep Max CalculatorEstimated one-rep max from a set you lifted.
- Calories Burned Walking CalculatorCalories from your weight, pace and time.
- Macro CalculatorGrams of protein, carbs and fat from calories.