Estimate the calories an activity burns. This free calorie burning by weight calculator uses your body weight, the activity’s intensity and your duration to estimate energy used – with per-minute and per-hour rates.
A general estimate using standard MET values – actual burn varies with fitness, effort, terrain and individual metabolism. For a personalised plan, a fitness or health professional can help.
How the Calorie Burning by Weight Calculator Works
The Calorie Burning by Weight Calculator estimates energy used during an activity by combining your body weight with a standard MET (metabolic equivalent) intensity value for that activity and how long you did it.
Formula: Calories burned per hour = MET × weight (kg). Calories per minute = (MET × weight (kg)) ÷ 60. Total calories burned = calories per minute × duration (minutes). If your weight is entered in pounds, it’s first converted with weight (kg) = weight (lb) × 0.45359237 before the formula is applied.
- Body weight — your weight, entered in kg or lb via the unit toggle
- Activity — the activity you select from the dropdown, each carrying a fixed MET intensity value (e.g. brisk walking = 3.5, jogging = 7)
- Duration — how long you did the activity, in minutes
Example Scenarios
| Weight | Activity (MET) | Duration | Calories burned |
|---|---|---|---|
| 70 kg | Brisk walking (3.5) | 30 min | ~123 kcal |
| 80 kg | Jogging (7) | 30 min | 280 kcal |
| 60 kg | Running, 6 mph (9.8) | 20 min | 196 kcal |
| 90 kg | Cycling, moderate (7.5) | 45 min | ~506 kcal |
| 65 kg | Swimming laps (8) | 40 min | ~347 kcal |
| 154 lb (~69.9 kg) | Walking, slow (2.5) | 60 min | ~175 kcal |
Reading Your Calorie Burning by Weight Calculator Estimate
A calorie burning by weight calculator uses MET values, which are averages drawn from many people. Your real burn can differ because fitness, technique, terrain and body composition all change how hard an activity is for you.
- Pick the intensity honestly. A brisk walk and a gentle stroll have different MET values, and choosing the higher one inflates the result.
- MET figures include the calories you would burn at rest anyway, so the extra burn from exercise is a little lower than the total shown.
- Enter your weight in the unit the calorie burning by weight calculator asks for; mixing pounds and kilograms is a common slip.
Fitness watches and gym machines often give different numbers from a calorie burning by weight calculator, and none of them is exact.
If you use a calorie burning by weight calculator to plan meals, treat the figure as a rough guide rather than calories to eat back in full. The metabolic equivalent of task article on Wikipedia explains the MET system behind the calorie burning by weight calculator.
Calorie Burning by Weight Calculator FAQ
How is calories burned calculated from MET values?
The tool multiplies the activity’s MET value by your body weight in kilograms to get an hourly burn rate, divides that by 60 for a per-minute rate, then multiplies by your entered duration. Heavier body weight and higher-MET activities both increase the estimate.What is a MET value and where do these numbers come from?
A MET (metabolic equivalent) compares an activity’s energy cost to resting. Sitting quietly is about 1 MET, while running at 6 mph is nearly 10 METs. This calculator uses standard MET values commonly assigned to each listed activity.Does this calculator account for my fitness level or effort?
No, it uses a fixed MET value per activity regardless of your effort, terrain or fitness level. Two people doing the same activity for the same time get the same estimate here, even though their real-world burn may differ.Can I switch between kg and lb for my weight?
Yes, tap the unit button next to the weight field to toggle between kg and lb. Pounds are converted to kilograms internally before the calorie formula is applied, so you can enter your weight in whichever unit you know.Why does the same activity burn more calories for a heavier person?
The formula multiplies MET by body weight in kilograms, so a heavier person burns more estimated calories doing the identical activity for the identical time. This reflects that moving more body mass generally takes more energy.How accurate is this estimate for tracking weight loss?
It’s a general estimate based on standard MET tables, not a personalized measurement. Actual calorie burn varies with individual metabolism, intensity and conditions, so treat the number as a rough guide rather than an exact figure for weight-loss planning.Related Calculators
To see how today’s activity fits your bigger energy picture, check the TDEE Calculator for your total daily energy needs, the Calories Burned Walking tool for a walking-specific estimate, or the Daily Steps Calorie Burn Calculator if you track steps instead of minutes.