How to Find Your Heart Rate for Fat Burning

How to Find Your Heart Rate for Fat Burning. Part of the series: Heart Health. Find the heart rate that is most beneficial for fat burning by subtracting your age from the number 220 and multiplying that number by 0.6 or 0.7. Burn the most fat during exercise by reaching around 65 percent of your maximal heart rate with advice from a board-certified cardiologist in this free video on exercise and fat burning.