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Maximum HR Calculator!

By: Bodybuilding.com

To determine your Maximum HR, use the calculators below. The simple formula: Take 220 and minus your age which is accurate to approximately +15 BPM. You then take that number and multiply it by .75 - .85, which will give you your percentages of 75% -- 85% of your Max. HR.

This is the Target Range or Zone that you want to stay in when doing any type of cardiovascular (aerobic) activity. When in this range your body is getting an optimum workout with maximum benefit, and it stays in a Fat Burning mode.

There are two different ways to calculate your maximum heart rate and your target heart rates. The method I just explained is the simple method. Read the full article here.

Simple Target Heart Rate Calculator
Using the 220 - Age formula.

Enter Your Age - Then press Calculate.
Maximum
Heart Rate
Target
Heart Rate per minute
(75% - 85% of Max)
Target
Heart Rate
15 sec count

The Karvonnen formula is more advanced since it also takes into account your resting heart rate. This is your heart rate at complete rest. To determine this, take your pulse for 60 seconds just before you get out of bed... or take it for 30 seconds and multiply by 2.

Advanced Target Heart Rate Calculator
Using the Karvonen Formula.

  • For your age, use a whole year. (Between 0 and 100)
  • Put your Resting Heart Rate in the next box. (Between 30 and 100)
  • In the % box, use a number between 50 and 85. Do not include the %.
  • Click on the Calculate button, and it will calculate your target heart rate or that percentage.
Your Age in Years
Resting Heart Rate
% of Maximum Effort
Your Target Heart Rate
%


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