The Heart Rate Calculator

Your Maximum heart rate (HRMax) can be determined using the formula: 226 - your age for women or 220 - your age for men. A more accurate method is to perform a stress test under supervised conditions (highly recommended for sedentary people over 40 slightly overweight).

This calculator calculates your ranges using 2 different methods. The standard method: HRMax x % and the Karvonen method: HRR x % + HRest where HRR stands for your Heart Rate Reserve and HRest your Resting Heart Rate.

To find out your Resting Heart Rate (HRest) take your pulse in the morning after visiting the bathroom. Do this for 5 days and take the average.

To calculate your different ranges simply follow the 4 easy steps below. The difference between this calculator and others is that it uses a JavaScript. Which means you can save this page to your hard disk and use it even off-line because all calculations are being performed by your browser it also means that it is platform independent (in theory!)... neat!

% Standard Karvonen 50 55 60 65 70 75 80 85 90 95 100

4 EASY STEPS Choose your sex Enter your resting heart rate Enter your maximum heart rate or if you do not know it enter your age click the Calculate button. Sex: Female   Male Resting Heart Rate (HRest): Maximum Heart Rate (HRMax):  or your age:  Heart Rate Reserve(HRR):