Calories Burned Calculator by Activity

What this calculator estimates

Estimate energy used during one activity from body weight, minutes and an activity preset. The result is an approximate gross energy cost, including energy you would have used at rest during that time.

Inputs and calculation method

Enter weight in kilograms and duration in minutes, then select Walking (3.5 MET), Weights (5), Gym workout (6), Running (8) or High intensity (10). These broad presets stand in for intensity; the form does not measure speed, load, incline or heart rate.

Formula and units

Estimated kcal = MET × 3.5 × weight in kg ÷ 200 × minutes. The main result is rounded to the nearest 5 kcal. The per-hour figure scales that rounded result to 60 minutes; it is not a second measurement.

How to use it

1. Enter your current body weight in kg.
2. Enter the minutes spent doing the selected activity, rather than a full day.
3. Choose the closest activity preset and calculate.
4. For a mixed session, estimate its parts separately rather than assuming the hardest intensity lasted throughout.

Worked example

For a 70 kg person, 45 minutes at the Gym workout preset (6 MET) gives 6 × 3.5 × 70 ÷ 200 × 45 = 330.75 kcal, displayed as 330 cal after rounding to the nearest 5. The panel scales this to 440 cal per hour.

How to read the result

Here “cal” means dietary Calories, or kilocalories (kcal). The result describes the selected session, not a daily food allowance. Do not add the whole amount to a daily energy estimate that already includes that activity.

Common mistakes

• Treating every gym workout as the same intensity.
• Including long rests as if they were continuous hard exercise.
• Confusing gross session calories with additional calories above rest.

Method limitations

METs describe average activity costs. Fitness, movement efficiency, pauses and actual intensity change an individual’s expenditure; the displayed precision does not remove that uncertainty.

Sources and method references

• Compendium of Physical Activities: standard MET definition and limitations

Supporting guides

• Calories Burned Weight Training: What The Number MissesWhy strength training calorie burn is harder to estimate than cardio, and how to use the number without undervaluing muscle and recovery.
• Home Workout Calorie Burn: How To Estimate It RealisticallyEstimate home workout calories without pretending every circuit, class or bodyweight session has the same intensity.
• How Calories Burned Are Estimated: METs, Body Weight And TimeA practical guide to the logic behind calories-burned calculators, including MET values, duration, body weight and intensity assumptions.
• MET Values Explained For Fitness Calorie CalculatorsUnderstand MET values, intensity categories and why the same activity can produce different calorie estimates.
• Cardio vs Strength Calorie Burn: Which Should You Count?Compare cardio and strength training calorie burn so fat-loss plans value both immediate energy use and long-term body composition.
• Why Fitness Trackers Overestimate Calories BurnedWhy wearables can overestimate exercise calories and how to use tracker data without wrecking a calorie target.
• Using Calories Burned With TDEE Without Double CountingHow to combine exercise calories and TDEE estimates without accidentally counting the same activity twice.

Using the estimate

Use the estimate to compare activity duration and the fixed intensity presets. A measured session duration is useful; the resulting calories remain approximate.