🔥 Calories Burned Calculator
By Shihab Mia · Reviewed by ToolNimba Editorial Review, fitness and nutrition content · Updated 2026-06-28
This calculator gives a rough estimate only, based on standard MET values for an average adult. Your real energy expenditure depends on your fitness level, exercise intensity, age, sex, body composition and metabolism, so two people doing the same activity can burn very different amounts. The result is not medical advice. Speak to a doctor or a qualified professional before starting a new exercise or weight-loss program, especially if you have a health condition.
Estimates use standard MET values. Actual burn varies with fitness, intensity and body composition.
This calories burned calculator estimates how much energy you use during exercise. Choose an activity, enter your body weight, and set how many minutes you were active. The tool applies the activity MET value (a standard measure of effort) to your weight and time, then shows the estimated calories burned, the burn rate per minute, and the MET value used. It is handy for planning workouts, tracking a calorie deficit, or simply seeing how different activities compare.
What is the Calories Burned Calculator?
MET stands for Metabolic Equivalent of Task, and it is the engine behind any calories burned calculator. One MET is the energy you burn sitting quietly at rest, roughly 1 kilocalorie per kilogram of body weight per hour. An activity rated at 7 METs uses about seven times the energy of resting. These MET values come from the Compendium of Physical Activities, a research database where scientists measured the oxygen cost of hundreds of activities across thousands of people. That is why the same numbers (walking around 3.5, running around 9.8, cycling around 7.5) show up in fitness apps and on every calories burned calculator online.
The calorie math itself is simple. The classic formula reads calories = MET times 3.5 times weight in kilograms divided by 200, then multiplied by the minutes you exercised. The 3.5 figure is the resting oxygen uptake in millilitres per kilogram per minute, and dividing by 200 converts that oxygen use into kilocalories. An even shorter version skips the constants: calories = MET times weight in kg times time in hours. Both give the same answer. Heavier people burn more for the same activity because they move more mass, and longer sessions burn proportionally more, which is exactly what this calories burned calculator captures.
Intensity is where most people go wrong, so it pays to understand the bands. Light activity sits below 3 METs (slow walking, gentle stretching). Moderate activity runs from 3 to 6 METs (brisk walking, easy cycling, recreational swimming) and is the zone public-health guidelines point to for general fitness. Vigorous activity is anything above 6 METs (running, fast cycling, jumping rope). When you pick an entry in a calories burned calculator, you are really picking an intensity band, so a leisurely stroll and a power walk are not the same line item.
There is also a difference between gross and net calories burned. The MET formula reports the total energy your body used during the activity, which includes the calories you would have burned at rest anyway. To get the net figure, the extra burn caused by the exercise, you subtract one MET worth of energy. For most planning purposes the gross number is what people use and what this tool reports, but it is worth knowing when you compare a calories burned calculator against a chest-strap heart-rate monitor that estimates net cost.
Knowing your calories burned by activity is most useful as a comparison and planning tool rather than a precise reading. The compendium describes an average person at a steady effort, so your real burn shifts with fitness (a trained athlete is more efficient and may burn less than the table suggests), age, sex, muscle mass and how hard you actually pushed. Treat the output of any calories burned calculator as a solid estimate, accurate enough to compare running against cycling or to set a weekly target, but expect real-world variation of 15 to 20 percent or more.
Used sensibly, a calories burned calculator turns vague effort into numbers you can act on. Pair the estimate with your daily energy intake to manage a calorie deficit, schedule the right mix of moderate and vigorous sessions, and track progress week to week. It will not replace a lab test, but for everyday fitness planning it is one of the most practical free tools you can keep in your routine.
When to use it
- Planning a workout to hit a daily or weekly calorie-burn target.
- Comparing activities, for example seeing how 30 minutes of calories burned running stacks up against 30 minutes of cycling.
- Estimating the exercise side of a calorie deficit when trying to lose or maintain weight.
- Logging energy expenditure when an app or fitness tracker is not available.
- Choosing between moderate and vigorous sessions to match a fitness goal or recovery day.
- Working out calories burned per minute so you know how long to stay active to reach a goal.
How to use the Calories Burned Calculator
- Pick the activity that best matches what you did from the dropdown, and match the intensity (a brisk pace, not a stroll).
- Enter your body weight and choose kilograms or pounds.
- Enter how many minutes you spent doing the activity.
- Read off the estimated calories burned, the per-minute rate, and the MET value used.
- Try a second activity with the same weight and time to compare calories burned by activity side by side.
Formula & method
Worked examples
A 70 kg person runs (MET 9.8) for 30 minutes.
- MET × 3.5 = 9.8 × 3.5 = 34.3
- 34.3 × weight = 34.3 × 70 = 2,401
- 2,401 ÷ 200 = 12.005 kcal per minute
- 12.005 × 30 minutes = 360.15
Result: About 360 kcal burned, roughly 12.0 kcal per minute.
An 80 kg person walks (MET 3.5) for 45 minutes.
- MET × 3.5 = 3.5 × 3.5 = 12.25
- 12.25 × weight = 12.25 × 80 = 980
- 980 ÷ 200 = 4.9 kcal per minute
- 4.9 × 45 minutes = 220.5
Result: About 221 kcal burned, roughly 4.9 kcal per minute.
Using the short formula: a 90 kg person swims (MET 7.0) for 1 hour.
- calories = MET × weight in kg × time in hours
- 7.0 × 90 × 1 = 630
- Cross-check with the long formula: 7.0 × 3.5 × 90 ÷ 200 = 11.025 kcal per minute
- 11.025 × 60 minutes = 661.5 (the small gap comes from rounding the 3.5 and 200 constants)
Result: About 630 to 660 kcal burned in an hour of general swimming.
Approximate MET values and intensity band for common activities
| Activity | MET value | Intensity |
|---|---|---|
| Yoga (hatha) | 2.5 | Light |
| Walking (3.0 mph) | 3.5 | Moderate |
| Dancing (general) | 4.8 | Moderate |
| Weight training | 5.0 | Moderate |
| Hiking (cross country) | 6.0 | Moderate |
| Swimming (general) | 7.0 | Vigorous |
| Cycling (moderate) | 7.5 | Vigorous |
| Climbing stairs | 8.8 | Vigorous |
| Running (6 mph) | 9.8 | Vigorous |
| Jumping rope | 11.0 | Vigorous |
Estimated calories burned in 30 minutes for a 70 kg person
| Activity | MET value | Calories (30 min) |
|---|---|---|
| Yoga (hatha) | 2.5 | ≈ 92 kcal |
| Walking (3.0 mph) | 3.5 | ≈ 129 kcal |
| Swimming (general) | 7.0 | ≈ 257 kcal |
| Cycling (moderate) | 7.5 | ≈ 276 kcal |
| Running (6 mph) | 9.8 | ≈ 360 kcal |
How body weight changes calories burned running (6 mph, MET 9.8) for 30 minutes
| Body weight | Calories (30 min) | Calories per minute |
|---|---|---|
| 55 kg (121 lb) | ≈ 283 kcal | ≈ 9.4 kcal |
| 70 kg (154 lb) | ≈ 360 kcal | ≈ 12.0 kcal |
| 85 kg (187 lb) | ≈ 437 kcal | ≈ 14.6 kcal |
| 100 kg (220 lb) | ≈ 515 kcal | ≈ 17.2 kcal |
Common mistakes to avoid
- Treating the estimate as an exact measurement. MET values describe an average person at a typical intensity. Your real burn can differ by 20 percent or more depending on effort, fitness and body composition, so use the calories burned calculator as a guide, not a precise reading.
- Picking the wrong intensity level. A leisurely walk and a power walk have very different MET values, as do light and vigorous cycling. Choosing an activity that does not match how hard you actually worked is the biggest source of error.
- Forgetting to subtract resting calories. The MET formula counts total (gross) energy used during the activity, including the calories you would have burned at rest anyway. For a strict net figure you would subtract roughly one MET worth, though most people use the gross number.
- Over-eating to replace burned calories. It is easy to undo a workout by treating the calorie burn as a license to eat more. If weight loss is the goal, remember the deficit only works if you do not fully eat the burned calories back.
- Mixing up pounds and kilograms. The formula uses kilograms. If you enter a weight in pounds without converting, the result will be more than double the real figure. Use the unit selector and double-check before trusting the number.
- Counting incidental rest as active minutes. Time spent standing around, waiting at lights or chatting between sets is not active time at the listed MET. Enter only the minutes you were actually moving at that intensity.
Glossary
- MET
- Metabolic Equivalent of Task, a ratio comparing an activity energy cost to resting. One MET is the energy used sitting quietly, about 1 kcal per kg of body weight per hour.
- Kilocalorie (kcal)
- The unit commonly called a calorie on food labels. It is the energy needed to raise one kilogram of water by one degree Celsius.
- Calorie deficit
- Burning more energy than you consume, which over time leads to weight loss.
- Basal metabolic rate
- The energy your body uses at complete rest to keep basic functions running, separate from exercise.
- Intensity
- How hard you work during an activity, which raises or lowers its effective MET value.
- Moderate-intensity activity
- Activity in the 3 to 6 MET range, such as brisk walking or easy cycling, often the target for general health.
- Vigorous-intensity activity
- Activity above 6 METs, such as running or jumping rope, that raises heart rate and breathing substantially.
- Gross vs net calories
- Gross is the total energy burned during exercise; net subtracts the resting energy you would have used anyway.
Frequently asked questions
How does the calories burned calculator work?
It uses the MET formula: calories = MET times 3.5 times your weight in kilograms divided by 200, multiplied by the minutes you exercised. The MET value reflects how hard the activity is compared with resting, so a higher MET and a longer session both raise the calories burned.
What is a MET value?
A MET, or Metabolic Equivalent of Task, measures an activity energy cost relative to sitting still. One MET equals resting energy use, so a 7 MET activity burns about seven times as much energy as rest. Researchers have measured MET values for hundreds of activities in the Compendium of Physical Activities.
How many calories did I burn walking?
For walking at about 3.0 mph (MET 3.5), a 70 kg person burns roughly 4.3 kcal per minute, so about 129 kcal in 30 minutes or 215 kcal in 50 minutes. Heavier walkers burn more; enter your own weight and minutes above for a personal estimate.
How many calories does running burn?
Running at 6 mph (MET 9.8) burns about 12 kcal per minute for a 70 kg person, so roughly 360 kcal in 30 minutes. Faster running has a higher MET and burns even more, which is why calories burned running is two to three times that of a steady walk.
Is the calorie estimate accurate?
It is a reasonable estimate for an average adult, but not exact. Your true burn depends on fitness, intensity, age, sex and body composition, so the figure can vary by 20 percent or more. Use it to compare activities and plan, and a heart-rate monitor for a more personal number.
Does body weight affect calories burned?
Yes. A heavier person moves more mass and so burns more calories doing the same activity for the same time. That is why weight is part of the formula, and why the calculator asks for it before estimating your burn.
What is the difference between moderate and vigorous activity?
Moderate-intensity activity falls between 3 and 6 METs (brisk walking, easy cycling), while vigorous activity is above 6 METs (running, fast cycling, jumping rope). Health guidelines often suggest 150 minutes of moderate or 75 minutes of vigorous activity per week.
How do I calculate calories burned per minute?
Divide the activity burn rate by time, or compute MET times 3.5 times weight in kg divided by 200. For a 70 kg person cycling at MET 7.5 that is 7.5 times 3.5 times 70 divided by 200, about 9.2 kcal per minute.
Why do running and walking differ so much?
Running has a much higher MET value (around 9.8) than walking (around 3.5) because it demands far more energy per minute. For the same person and duration, running can burn roughly two to three times the calories of a steady walk.
Can I use this to lose weight?
It can help you plan the exercise side of a calorie deficit, since losing weight means burning more energy than you take in. The estimate is only one half of the picture though, so pair it with mindful eating and, if you have health concerns, advice from a professional.
Sources
- 2011 Compendium of Physical Activities , Medicine & Science in Sports & Exercise (2011)
- Physical Activity for a Healthy Weight , U.S. Centers for Disease Control and Prevention