For A Well-Balanced Life
Adam Winter Lifestyle

Calories Burned

Calculate the Calories Burned By Heart Rate

This tool will show you the number of calories burned while working out. Burning more calories becomes easier with a better knowledge of the connection between the heart rate and the fat burning process.

Metric Imperial
Calories Burned
These calculations are based on averages.

The Fat Burning Zone

Yes, it exists, but it has been misinterpreted. The fat-burning zoneis a concept that the body burns a greater amount of fat at lower-intensity aerobic exercise than it does at higher intensities. Actually, the body burns a greater percentage of fat at lower intensities than at higher intensities.


At lower intensities the body may burn 50 percent of the calories from fat, while at higher intensities it may only burn 35 percent. But at higher intensities you burn way more total calories—and more fat calories overall—than you do at lower intensities.

How your Body uses Energy

To further explain, during exercise your body uses energy from two places: fat and glycogen stores. Glycogen is stored carbohydrates (converted sugars) in your muscles and liver. So yes, your body does use more fat as fuel during lower intensity exercise but you are also burning calories at a slower rate.

30 Minutes of
Fat Calories
Glycogen Calories
Total Calories
Low Intensity Group (50%) 120 80 200
Hight Intensity Group (75%) 140 260 400

There is a perfect heart rate zone tailored to each individual that burns the most fat calories. Stay below this zone and you aren’t maximizing the fat burn. Go above this zone and you’re only burning the food in your stomach, not getting rid of the body fat. And you might be surprised to learn the intensity level is fairly low, and you should aim to workout slightly longer at that lower intensity.

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