Calories Burned Calculator
Estimate how many calories you burn during exercise using your body weight, workout duration, and activity intensity (MET).
How this exercise calories burned calculator works
This calculator uses a widely accepted formula based on MET (Metabolic Equivalent of Task), your body weight, and time spent exercising. MET values represent how hard an activity is compared to resting.
The formula used is: Calories burned = MET × weight (kg) × duration (hours).
Example: if you weigh 70 kg, do an activity with a MET of 8.0 for 30 minutes: 8.0 × 70 × 0.5 = 280 calories burned.
What is MET and why it matters
MET is a practical way to estimate energy use for different exercises. A MET of 1.0 is resting energy. An activity with MET 8.0 uses about eight times the energy of resting.
- Light activity: 2.0–3.0 METs (easy walking, gentle stretching)
- Moderate activity: 3.0–6.0 METs (brisk walk, casual cycling)
- Vigorous activity: 6.0+ METs (running, HIIT, jump rope)
How to use the calculator correctly
1) Enter your current body weight
Use your most recent weight for better accuracy. You can switch between kilograms and pounds; the calculator handles conversion automatically.
2) Add your workout duration in minutes
Time should reflect active exercise, not warm-up breaks or rest periods unless you want a total session estimate.
3) Select your activity type
Pick the closest activity from the list. If your workout intensity is unique (for example, interval sessions), select Custom MET value and enter your own MET.
4) Review your result
You will see total calories burned, estimated calories per minute, and projected weekly burn if you repeated the same workout daily.
What affects calorie burn the most?
- Body weight: Heavier individuals generally burn more calories at the same intensity.
- Exercise intensity: Higher MET means higher calorie burn.
- Duration: Longer sessions increase total expenditure.
- Fitness level and efficiency: Trained athletes may perform more work with lower perceived effort.
- Environment: Heat, cold, incline, and terrain can change energy demand.
Quick guidance for better fat loss and fitness tracking
Calorie burn estimates are useful, but they are still estimates. For best results, combine this tool with a workout log and nutrition tracking.
- Track 2–4 weeks of data before making big changes.
- Use trends, not a single workout, to evaluate progress.
- Pair cardio with strength training to support muscle retention.
- Use heart rate and perceived effort to fine-tune intensity.
Frequently asked questions
Is this calculator accurate?
It provides a strong estimate based on validated exercise science methods. Real-world calorie burn can vary due to biomechanics, fitness level, and workout conditions.
Can I use this for walking and running?
Yes. Walking, jogging, running, cycling, swimming, HIIT, yoga, and strength training are all supported with activity-specific MET values.
Should I “eat back” exercise calories?
That depends on your goal. For fat loss, many people only eat back a portion. For performance or maintenance, replacing burned calories can support recovery and training quality.
Bottom line
An exercise calories burned calculator helps you make smarter training decisions. Use it to compare activities, build weekly plans, and stay consistent with your health goals. For the best outcomes, combine calorie estimates with sleep, hydration, strength work, and sustainable nutrition habits.