How Calories Burned Are Calculated
Calories burned are estimated using MET (Metabolic Equivalent of Task) values, which represent the energy cost of physical activities as a multiple of resting metabolic rate.
Calories = MET × Weight (kg) × Duration (hours)
What Are MET Values?
- 1 MET: Energy used at rest (sitting quietly)
- 3-6 METs: Moderate activity (walking, light cycling)
- 6+ METs: Vigorous activity (running, competitive sports)
- MET values are standardized by the Compendium of Physical Activities
Frequently Asked Questions
How accurate is this? MET-based estimates are within 15-20% for most people. Actual calories depend on fitness level, age, genetics, and exercise intensity.
Do heavier people burn more calories? Yes. Moving more mass requires more energy. A 200 lb person burns significantly more calories than a 130 lb person doing the same activity.
How many calories to lose 1 pound? You need a deficit of approximately 3,500 calories to lose 1 pound of fat.