How many calories do you burn running, swimming, or cycling? Calories burned depend on the activity, your weight, and the duration. The most scientifically grounded method uses MET values from the Compendium of Physical Activities.
In this article, you'll learn how the formula works, which activities burn the most calories, and how to increase your calorie burn.
What Are MET Values?
MET stands for Metabolic Equivalent of Task. One MET equals the energy expenditure at rest — roughly 1 kcal per kilogram of body weight per hour. An activity with 5 METs burns five times as much energy as resting.
The Compendium of Physical Activities from Arizona State University catalogues over 800 activities with their MET values. These values are based on laboratory studies and are the gold standard for estimating calorie burn.
The Formula
Calories = MET × Weight (kg) × Duration (hours)
Example: 30 minutes of running at 10 km/h (MET 9.8) at 80 kg body weight:
9.8 × 80 × 0.5 = 392 kcal
The formula provides a solid estimate. Actual burn varies based on fitness level, temperature, and individual metabolic rate.
Calories Burned by Activity
The following table shows estimated calorie burn per 30 minutes for an 80 kg person:
| Activity | MET | kcal / 30 min |
|---|---|---|
| Walking (moderate) | 3.5 | 140 |
| Cycling (moderate) | 6.8 | 272 |
| Swimming (moderate) | 7.0 | 280 |
| Running (10 km/h) | 9.8 | 392 |
| HIIT | 8.0 | 320 |
| Yoga | 2.5 | 100 |
| Stair climbing | 8.8 | 352 |
Factors That Affect Calorie Burn
Body Weight
Heavier people burn more calories during the same activity. A 100 kg runner burns about 490 kcal in 30 minutes at 10 km/h — 25% more than an 80 kg person.
Intensity
Higher intensity means a higher MET value and more calories burned. Interval training (HIIT) can burn more calories in less time than steady-state exercise.
Duration
Calorie burn increases linearly with duration. Running for 60 minutes burns twice as much as 30 minutes — at the same intensity.
Afterburn Effect (EPOC)
After intense exercise, your body continues to burn calories during recovery. This Excess Post-exercise Oxygen Consumption (EPOC) can account for 6–15% of workout calorie burn.
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To lose one kilogram of body fat, you need a calorie deficit of about 7,700 kcal. Running three times a week for 30 minutes (392 kcal) burns roughly 1,176 kcal per week — equivalent to about 0.15 kg of fat.
Combine exercise with a moderate calorie deficit for sustainable results. Calculate your TDEE to get started.
Tips to Increase Your Calorie Burn
1. Add interval training: Alternating between high and low intensity burns more calories and increases the afterburn effect.
2. Choose full-body exercises: Swimming, rowing, and burpees engage more muscle groups and increase energy expenditure.
3. Boost daily activity: Take the stairs (8.8 METs) instead of the elevator, bike instead of drive. These NEAT calories (Non-Exercise Activity Thermogenesis) add up.
4. Build muscle mass: Muscle burns more calories at rest than fat tissue. Strength training increases your basal metabolic rate.
Limitations of the MET Method
MET values are averages from laboratory studies. Individual factors like fitness level, body composition, temperature, and terrain affect actual calorie burn. Heart rate monitors and fitness trackers can provide more precise values. Still, the MET method remains the best available estimate without specialized equipment.
Conclusion
Your calorie burn depends on activity, weight, and duration. Use our Calories Burned Calculator for a personalized estimate. Combine the result with your TDEE and macronutrients for the full picture.
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