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Calorie Burn Equation:
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The calorie burn equation estimates energy expenditure during physical activity based on MET (Metabolic Equivalent of Task) values, body weight, and duration of activity. It provides a practical way to estimate calories burned during various exercises.
The calculator uses the calorie burn equation:
Where:
Explanation: The equation converts MET values (which represent activity intensity) into actual calories burned based on your body weight and how long you performed the activity.
Details: MET values standardize the energy cost of physical activities. One MET is defined as the energy cost of sitting quietly (equivalent to 1 kcal/kg/hour). Higher MET values indicate more intense activities.
Tips: Enter the MET value for your activity (common values range from 2.5 for light activity to 8+ for vigorous exercise), your weight in kg, and duration in minutes. All values must be positive numbers.
Q1: Where can I find MET values for different activities?
A: The Compendium of Physical Activities provides comprehensive MET values for hundreds of activities (e.g., walking = 3.5, running = 7-12 depending on speed).
Q2: How accurate is this calculation?
A: It provides a reasonable estimate but individual variations in metabolism, fitness level, and body composition can affect actual calorie burn.
Q3: Why divide time by 60?
A: MET values are based on hourly energy expenditure, so we convert minutes to hours (fraction of an hour) in the calculation.
Q4: Does this account for afterburn effects?
A: No, this calculates only calories burned during the activity. Some intense activities may increase calorie burn for hours afterward.
Q5: Can I use pounds instead of kilograms?
A: The equation requires weight in kg. To convert pounds to kg, divide by 2.205 (e.g., 150 lbs = 68 kg).