Calculator input
Enter workout details below. Results appear above this form after submission.
Example data table
| Exercise | Weight | Duration | MET | Intensity Factor | Estimated Calories |
|---|---|---|---|---|---|
| Walking, brisk | 70 kg | 30 min | 5.0 | 1.00 | 183.75 |
| Running, 5 mph | 70 kg | 30 min | 8.3 | 1.00 | 304.82 |
| Cycling, moderate | 80 kg | 45 min | 7.5 | 1.05 | 496.13 |
| Swimming laps | 65 kg | 40 min | 8.0 | 1.00 | 364.00 |
| Yoga | 60 kg | 50 min | 3.0 | 0.95 | 149.63 |
Formula used
Calories burned per minute = ((MET × 3.5 × weight in kg) ÷ 200) × intensity factor
Total calories burned = calories per minute × duration in minutes
Net exercise calories = (((MET − 1) × 3.5 × weight in kg) ÷ 200) × duration × intensity factor
Weekly and monthly totals = session calories × sessions per week, then × 4.345 for a monthly estimate
MET is a standard activity intensity value. Higher MET values usually mean higher energy use. This formula provides an estimate, not a clinical measurement.
How to use this calculator
- Select the exercise that best matches your session.
- Enter your body weight and choose the correct unit.
- Enter workout duration in minutes.
- Adjust the intensity factor if your effort was easier or harder than normal.
- Add weekly frequency to project longer-term calorie burn.
- Enter distance if you want calories per kilometer.
- Use a custom MET value when you already know a more accurate intensity score.
- Press the calculate button to see results above the form, then export them if needed.
About this calculator
Why calorie estimates matter
Exercise calories burned estimates help you plan workouts better. This calculator turns weight, time, and activity level into a clear energy estimate. It is useful for walking, running, cycling, swimming, strength work, and many daily sessions. You can also adjust the intensity factor. That helps when your pace is easier or harder than the usual activity value.
How the estimate works
The tool uses MET values. MET means metabolic equivalent of task. One MET reflects resting energy use. Harder activities have higher MET scores. A casual walk has a lower score. Fast running has a much higher score. The calculator combines that MET value with your body weight and exercise duration. The result is a practical estimate, not a lab reading.
What changes the final result
Weight matters because larger bodies usually use more energy for the same task. Duration matters because more time means more work. Intensity matters because pace, resistance, terrain, and effort change the final burn. This page lets you select a preset activity or enter a custom MET value. That gives you flexibility for common workouts and special training sessions.
How to read the output
The result panel shows more than one number. You get total calories, calories per minute, calories per hour, and net exercise calories. Net calories remove resting burn from the estimate. You also get weekly and monthly projections based on training frequency. If you enter distance, the page estimates calories per kilometer too. Those extra values help with planning and comparison.
Why the chart and exports help
The chart adds a visual view. You can compare a single workout with longer time frames. Small changes in pace can shift totals quickly. Use the same settings each time for cleaner progress comparisons. The download buttons help you save result details for reports, coaching notes, or personal logs. The example table below shows sample sessions. It gives you a fast reference before entering your own values.
Use results carefully
Use the numbers with care. Watches, gym machines, and online tools often disagree. Real burn changes with fitness, technique, temperature, body composition, and recovery state. Treat the estimate as a guide. It is best for comparing sessions in a consistent way. It can support weight management goals, workout design, and habit tracking, but it should not replace personal medical advice.
Frequently asked questions
1. Is this calorie result exact?
No. It is an estimate based on MET values, body weight, time, and effort. Actual burn can change because of fitness level, technique, temperature, and body composition.
2. What does MET mean?
MET means metabolic equivalent of task. It measures how hard an activity is compared with rest. A higher MET usually means higher calorie burn.
3. Why does body weight change the result?
A heavier body usually needs more energy to perform the same movement. That is why calorie estimates rise when body weight increases, even with the same workout time.
4. When should I use a custom MET value?
Use a custom MET when you have a trusted MET score from a research source, a coach, or a specialized testing method. Otherwise, the preset list works well for general estimates.
5. What is the intensity factor?
It adjusts the result up or down. Use 1.00 for normal effort. Try a lower value for easy sessions and a higher value for harder sessions.
6. Why are net calories lower than total calories?
Net calories remove the energy your body would burn at rest during the same time period. This can help you compare exercise-only effort more clearly.
7. Can I use this for weight loss planning?
Yes, as a planning guide. It can help compare workouts and estimate weekly burn. Still, food intake, recovery, and consistency matter just as much as exercise.
8. Why do watches and machines show different numbers?
Different tools use different formulas, sensors, and assumptions. Heart rate, movement tracking, and device calibration can all change the final estimate.