As of April 2019, we've improved how we calculate calories based on the recommendations from the Compendium of Physical Activities. We are continually updating our app and believe that these changes reflect a more accurate representation of your caloric burn.
The calorie algorithm can have problems if there are recording issues with your workout or if your profile settings are incorrect. If you see calorie differences on the app from workout-to-workout, you may need to delete and reinstall the app. You should also check your MapMy profile settings to make sure your profile height and weight are accurate. Profiles and workouts without age, height, weight, gender, activity type and duration data will not record calories correctly.
Calories are determined by age, height, weight, gender, the intensity of the workout, distance traveled, and activity type. Heart rate does not currently factor into the equation. Our products calculate total burn, which includes caloric burn for both resting and active phases of activity. This means the calories you would typically burn by merely being alive automatically add to the number of calories you would burn from whichever activity you do.
We have based our calorie count on established scientific research detailed in the Compendium of Physical Activities. This update may impact the estimated number of calories burned for a given workout. For more information about the way we calculate caloric burn please visit: https://sites.google.com/site/compendiumofphysicalactivities/corrected-mets.