Free Calories Burned Calculator Online
Estimate how many calories you burn during exercise and daily activities with this free calories burned calculator. Select from 20+ activities, enter your weight and duration — get instant results online and free.
Calories Burned
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How the Calories Burned Calculator Works
The calories burned calculator uses MET (Metabolic Equivalent of Task) values from the Compendium of Physical Activities. Each activity has a standardized MET value that represents its energy cost relative to sitting at rest. The formula is straightforward: Calories = MET value multiplied by body weight in kilograms multiplied by duration in hours.
For example, running at 6 mph has a MET value of 9.8. A 70 kg person running for 30 minutes burns approximately 9.8 times 70 times 0.5 = 343 calories. The calories burned calculator applies this formula automatically for whichever activity you select.
Body weight significantly affects calorie burn. A heavier person expends more energy moving the same distance or performing the same activity. This is why the calories burned calculator requires your weight for accurate results. The same 30-minute run burns about 250 calories for a 120-lb person but over 400 for a 200-lb person.
Understanding MET Values
Light (1.5–3.0 METs)
Walking slowly, light housework, gentle stretching. These activities burn slightly more than resting but are low intensity.
Moderate (3.0–6.0 METs)
Brisk walking, cycling at moderate pace, dancing, gardening. You can talk but not sing. The calories burned calculator shows these as solid calorie-burners.
Vigorous (6.0–9.0 METs)
Jogging, swimming laps, hiking uphill, playing basketball. Breathing hard, can only speak in short phrases.
Very Vigorous (9.0+ METs)
Running fast, jumping rope, vigorous rowing. Maximum effort activities that burn the most calories per minute.
Maximizing Your Calorie Burn
The calories burned calculator shows that higher-intensity activities burn more calories per minute — but sustainability matters. A 20-minute HIIT session may burn fewer total calories than a 60-minute moderate walk, but the afterburn effect (EPOC) can add 6–15% more over the following hours. For fat loss, total weekly calorie burn matters more than individual sessions. Mix high-intensity and moderate activities throughout the week. Strength training does not burn as many calories during the workout, but added muscle mass increases your resting metabolic rate permanently. Use this free calories burned calculator online to compare activities and plan a balanced exercise routine.
Frequently Asked Questions
Disclaimer: This free online calories burned calculator provides estimates based on MET values from the Compendium of Physical Activities. Actual calorie expenditure varies by individual fitness level, body composition, and exercise intensity. Consult a fitness professional for personalized guidance.
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