So, if you’re looking to use your treadmill’s calorie counter to measure the number of calories you’re burning during high-intensity interval training (HIIT), you may want to take 15-20% off the calories estimated.

The calorie counter may not be as accurate when it comes to more vigorous exercise because it is difficult to hold a consistent pace for an extended time. Generally speaking, treadmill calorie counters are most accurate when measuring steady-state workouts, such as long walks, light jogs and steady runs. Treadmill calorie counters can be very accurate, but they can also be off by quite a bit, depending on the make and model of the treadmill. For a more accurate reading input, your age, weight, height, sex and, periodically use the heart rate sensors as the treadmill has preset calculations to make them accurate. On average, treadmill calories counters are between 80-90% accurate depending if they are regularly calibrated. If you can input your weight into the machine, chances are the calorie counter is more accurate. However, some treadmill calorie counters are more accurate than others. In the middle of your workout, you can keep an eye on the calorie counter to be sure you are burning off the maximum number of calories. The built-in calorie counters on cardio machines such as treadmills are very convenient.

Treadmill calorie calculator