Training Range via % Maximum Heart Rate : Formula

Here is the formula for the most common and most conservative method of ascertaining your particular range.

220 - (your age) = Max HR (in beats per minute)

Max HR x (.55 to .85) = 55% to 85% of Max HR

For example:

220 - 35 (years old) = 185 (beats per minute)

185 x .55 = 101.75 (beats per minute)

185 x .85 = 157.25 (beats per minute)

Round off these numbers.

So, 102 to 157 beats per minute is the training range of the 35 year old in this example.

Check out our Table of Target Training Zones to quickly find your estimated range based on this formula.