Exercise Calorie Burn & Activity MET Calculator
Exercise Calorie Burn Calculator evaluates energy expenditure across athletic activities, workouts, and daily physical tasks directly inside browser memory. Based on the standardized Compendium of Physical Activities, it applies Metabolic Equivalent of Task (MET) multipliers to your body weight and workout duration without cloud processing.
The calculation is based on the exercise physiology formula: Calories Burned = MET * Body Weight (kg) * Duration (hours). The calculator includes standard physical activities: Brisk Walking (4.3 METs), Running at 6 mph (9.8 METs), Road Cycling at 12-14 mph (7.5 METs), Lap Swimming (6.0 METs), Resistance Weight Training (3.5 METs), and High-Intensity Interval Training (8.0 METs). Users can input custom body weights and workout durations to calculate total kilocalories burned.
Concrete Scenario: A runner weighing 70 kg completes a 45-minute (0.75 hour) outdoor run at a steady pace (MET 9.8). The calculator computes 9.8 * 70 * 0.75 = 514.5 kcal burned during the session, providing an accurate exercise calorie metric for workout logging or nutritional replenishment planning.
All energy expenditure calculations, unit conversions, and calorie summaries execute locally in client-side JavaScript, ensuring complete confidentiality for your fitness logs and personal health data.
Best Practices & Essential Guidelines
- Input your current, accurate body weight; heavier individuals expend more total kinetic energy moving mass across equivalent distances.
- Account for rest periods during gym resistance training; a 60-minute weight session typically includes 20-30 minutes of active lifting sets.
- Use conservative intensity estimates when calculating outdoor activities with frequent stops (such as city cycling or casual walking).
- Do not eat back 100% of calculated exercise calories when in a fat-loss phase to compensate for natural metabolic compensation.
