Calories Burned General Calculator
Track your calories burned general with our free sports calculator. Get personalized stats, rankings, and performance comparisons.
Reviewed for accuracy by Sher, Sports Science & Nutrition Specialist
Calories Burned General Calculator
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Formula: Calories = MET × Weight(kg) × Duration(hr)
Worked example — 343 calories
Formula
Calories = MET × Weight(kg) × Duration(hr)
MET (Metabolic Equivalent of Task): 1 MET = resting. Walking=3.5, Running=7-12, Cycling=6-10, Swimming=6-8.
Worked Examples
Example 1: 30 min running
Problem:70kg person, MET=9.8, 30 minutes
Solution:9.8×70×0.5 = 343 calories
Result:343 calories
Example 2: 60 min moderate cycling
Problem:82kg person, MET=8 (moderate cycling), 60 minutes
Solution:8×82×1.0 = 656 calories
Result:656 calories
Frequently Asked Questions
Why do heavier people burn more calories doing the same exercise?
The MET formula is Calories = MET × Weight × Time (in hours). Because weight is a direct multiplier, a heavier person requires more energy to move their body mass through the same activity. For example, a 90 kg person running at 6 mph burns 30% more calories than a 70 kg person doing the same run at the same pace. This is also why losing weight makes it progressively harder to maintain caloric deficit — the same workout burns fewer calories as you become lighter.
How accurate are calorie burn estimates from MET calculations?
MET-based calculations are estimates and can vary by 20-30% from actual measured calorie expenditure. They do not account for individual fitness level (fitter people burn fewer calories at the same pace), age (metabolism decreases with age), temperature (cold weather burns slightly more calories), and technique efficiency. The most accurate measurements come from indirect calorimetry (measuring oxygen consumption and CO2 production) in a lab setting. Consumer fitness trackers are typically 20-25% inaccurate on average, according to independent studies.
How many calories do I need to burn to lose one pound of fat?
One pound of body fat contains approximately 3,500 calories of stored energy. To lose one pound per week, you need to create a caloric deficit of 500 calories per day through a combination of diet reduction and increased exercise. However, this is a simplified estimate — actual fat loss depends on metabolism, muscle preservation, hormone levels, and food composition. Rapid weight loss (more than 1-2 lbs per week) often involves muscle loss along with fat. A sustainable approach combines moderate caloric restriction with strength training and cardiovascular exercise.
Does Calories Burned General Calculator account for afterburn (EPOC) from intense exercise?
No — Calories Burned General Calculator estimates calories burned during the activity itself using the standard MET formula, not the additional calories burned afterward from excess post-exercise oxygen consumption (EPOC), sometimes called 'afterburn'. High-intensity interval training and heavy resistance training can add a further 6-15% in extra calories burned over the following hours as the body restores oxygen debt and repairs tissue. Steady-state cardio at moderate intensity produces comparatively little afterburn effect.
How should I use a general calories-burned estimate for weight management?
Use the estimate as one input into your overall daily calorie balance rather than a precise number to eat back. Because MET-based estimates carry meaningful error margins, treat the result as a planning guide — for example, deciding whether a 45-minute session justifies an extra snack, or tracking a rough weekly exercise-calorie total alongside your food log. Combining this estimate with consistent body-weight trends over several weeks gives a far more reliable signal of whether you are in a deficit or surplus than any single workout's calorie count.
How many calories are in each macronutrient?
Protein and carbohydrate each supply about 4 kcal per gram, fat about 9 kcal per gram, and alcohol about 7 kcal per gram. These are Atwater factors — rounded averages, not exact constants — and real absorption varies: fibre yields closer to 2 kcal per gram, sugar alcohols less again, and whole nuts deliver measurably fewer calories than their fat content implies because some remains undigested. Because fat carries more than twice the energy per gram, small measurement errors in fat move your total far more than the same error in protein or carbohydrate, so weigh oils, nut butters, and dressings rather than estimating them by eye.
How many calories should I eat to lose weight safely?
Safe, sustainable weight loss is 0.5-1% of body weight per week — for most people that is 0.5-2 pounds per week. One pound of body fat stores roughly 3,500 calories, so a daily deficit of 500 calories below TDEE produces about one pound of loss per week. Larger deficits accelerate loss but increase muscle loss, hormonal disruption, and metabolic adaptation — the body reduces TDEE by 10-15% in response to sustained large deficits. Minimum intake thresholds exist to preserve muscle and organ function: women generally should not go below 1,200 calories and men below 1,500 without medical supervision. Combining a moderate calorie deficit (300-500 calories) with resistance training best preserves muscle while losing fat, giving better body composition outcomes than diet alone.
How does exercise intensity affect calorie burn?
Exercise intensity and calorie burn have a nuanced relationship. Higher-intensity exercise burns significantly more calories per minute — a 155 lb person burns roughly 400 calories/hour walking at 3.5 mph, 600 calories/hour jogging at 5 mph, and 900 calories/hour running at 8 mph. High-intensity interval training (HIIT) produces a meaningful excess post-exercise oxygen consumption (EPOC) or afterburn effect: metabolism remains elevated 6-15% above baseline for up to 24 hours, burning an extra 50-150 calories. However, HIIT can only be sustained 2-3 times per week before recovery suffers. Moderate-intensity steady-state cardio is sustainable daily and accumulates large total calorie expenditure over a week. The most effective approach pairs regular moderate-intensity sessions with 1-2 HIIT sessions weekly, adapted to your current fitness level.
References
Reviewed for accuracy by Sher, Sports Science & Nutrition Specialist · Editorial policy
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