Calories Burned Calculator

Calculate energy expenditure based on exercise MET intensity & duration

Activity & Duration

Energy Burn Summary

Total Calories Burned

515 kcal

Estimated energy spent
Burn Rate per Hour

686 kcal/hr

MET Intensity: 9.8
Comparison with Other 45-Min Activities

How MET (Metabolic Equivalent of Task) Works

A Metabolic Equivalent of Task (MET) is a physiological measure expressing the energy cost of physical activities. One MET is defined as the rate of energy produced by a person at rest (approx. 1 kcal per kilogram of body weight per hour).

Formula: Calories Burned = Duration (in minutes) × (MET × 3.5 × weight in kg) / 200

Frequently Asked Questions

Does fitness level affect how many calories I burn?
Yes. As you become more aerobically conditioned and efficient at a specific movement, your body may expend slightly fewer calories for the exact same workload compared to a beginner.

How to Use the Calories Burned Calculator

  1. Select your Activity or Sport from the dropdown list (Running, Cycling, Swimming, Weight Lifting, Walking, etc.).
  2. Enter your current Body Weight in kg or lbs.
  3. Input the total Duration of the exercise session in minutes.
  4. Click Calculate Burned Calories to view your total estimated caloric expenditure.

Metabolic Equivalent of Task (MET) Formula

Energy expenditure during physical activities is calculated using standard MET values published in the Compendium of Physical Activities:

Calories Burned = (MET × 3.5 × Weight in kg / 200) × Duration in Minutes

Where 1 MET equals the rate of energy expenditure while sitting quietly at rest (approx. 1 kcal/kg/hour).

Practical Step-by-Step Example

A person weighing 75 kg running at 8 km/h (5 mph) for 45 minutes (MET = 8.3):

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