Understanding how many calories you burn during exercise is essential for weight management, nutrition planning, and fitness tracking. Our free calories burned calculator uses research-validated MET (Metabolic Equivalent of Task) values from the Compendium of Physical Activities to estimate energy expenditure for dozens of exercises. Enter your weight, activity, and duration for instant results.
A calories burned calculator estimates the energy expenditure of physical activities using MET values — a standardized measure of exercise intensity developed through decades of exercise physiology research. One MET equals the energy cost of sitting quietly (approximately 1 calorie per kilogram of body weight per hour). Activities are rated as multiples of this baseline: walking is about 3.5 METs, running 6 mph is about 9.8 METs, and vigorous cycling is about 12 METs. By multiplying the MET value by your body weight and exercise duration, the calculator estimates total calories burned.
MET-based calculations from the Compendium of Physical Activities. Support for 100+ exercises across cardio, strength, sports, and daily activities. Body weight integration for personalized results. Duration input in minutes with per-hour rate display. Intensity level selection (light, moderate, vigorous) where applicable. Comparison to food equivalents for perspective. Support for both metric and imperial units. Mobile-friendly for post-workout logging. Client-side processing for privacy. No account required.
The calculator applies the formula: Calories Burned = MET × Weight (kg) × Duration (hours). When you select an activity, it looks up the corresponding MET value from the research-validated Compendium of Physical Activities. It multiplies this by your weight in kilograms and the duration in hours to estimate total energy expenditure. Higher MET activities (running, swimming, cycling) burn more calories per minute. Heavier individuals burn more calories at the same activity because moving greater mass requires more energy.
Weight Loss Planning — Calculating exercise contribution to daily calorie deficit. Nutrition Balancing — Matching post-workout nutrition to exercise intensity. Fitness Comparison — Comparing calorie burn across different activities for time efficiency. Training Load Monitoring — Tracking weekly energy expenditure across training sessions. Meal Planning — Estimating calorie needs on training versus rest days. Goal Setting — Setting calorie-burn targets for weekly exercise. Activity Selection — Choosing activities that maximize calorie burn in limited time. Recovery Nutrition — Determining refueling needs after long or intense workouts.
Our calculator uses the same MET-based methodology used in exercise science research, providing estimates comparable to fitness trackers — without needing a wearable device. It covers far more activities than most trackers and lets you quickly compare calorie burn across different exercises. This helps you make informed decisions about activity selection, workout duration, and post-exercise nutrition. Combined with our Calorie Calculator and Macro Calculator, it forms a complete nutrition and exercise tracking system.
Anyone tracking calories for weight management. Runners, cyclists, and swimmers logging training load. People choosing between activities to maximize calorie burn in limited time. Personal trainers estimating client exercise expenditure. Athletes balancing fuel intake with training demands. People on structured diet programs who need to account for exercise. Anyone curious about how many calories their daily activities and workouts burn.
Enter your current body weight accurately. Select your primary exercise activity from the list. Enter the duration of your workout in minutes. Note the calorie estimate. For mixed workouts (e.g., 20 min running + 30 min weights), calculate each activity separately and add them together. Compare your exercise calorie burn to your daily calorie target to understand the net effect on your energy balance.
Be Conservative — Assume actual burn is 10–20% less than calculated (most estimates are slightly high). Account for Warm-Up and Rest — If your 60-minute gym session includes 15 minutes of rest and transitions, calculate based on 45 minutes of actual exercise. Combine With Diet Tracking — Exercise calories are only meaningful in the context of total intake. Do Not Overcompensate — Eating back all exercise calories often eliminates your deficit. Track Consistency Over Precision — Weekly calorie burn trends matter more than daily exact numbers. Use for Comparison — The calculator is most valuable for comparing activities and tracking changes over time.
MET values are population averages — individual variation of 10–20% is normal. Fitness level affects efficiency: trained individuals may burn fewer calories at the same activity. The calculator does not include EPOC (after-burn) which adds 5–15% for intense exercise. Strength training MET values are rough averages — actual burn depends on rest periods, weight used, and tempo. Body composition (muscle vs fat) affects calorie burn but is not factored in. Environmental conditions (heat, cold, altitude) can increase energy expenditure. These are estimates, not precise measurements.
The standard formula is: Calories = MET × weight (kg) × duration (hours). MET (Metabolic Equivalent of Task) represents the energy cost of an activity relative to rest. Sitting quietly has a MET of 1.0 (baseline). Walking at 3 mph is MET 3.5 (3.5× resting metabolism). Running at 6 mph is MET 9.8. Our calculator uses the Compendium of Physical Activities, a research database with MET values for hundreds of activities, multiplied by your body weight and exercise duration.
MET (Metabolic Equivalent of Task) is a standardized measure of exercise intensity. 1 MET = 3.5 ml oxygen/kg/minute = approximately 1 calorie/kg/hour. METs were established through laboratory measurement of oxygen consumption during various activities. They are reliable population averages but have individual variation of 10–20%. Fit individuals may burn fewer calories at the same MET (greater efficiency), while unfit individuals may burn more. MET values assume the activity is performed at steady-state intensity.
Highest calorie-burning activities (per hour for a 155 lb person): Running 10 mph — 1,126 cal (MET 14.5). Jump rope vigorous — 861 cal. Cycling >20 mph — 861 cal. Swimming butterfly — 744 cal. Running 8 mph — 861 cal. Rowing vigorous — 632 cal. Cross-country skiing — 563 cal. HIIT training — 500–800 cal. However, the 'best' exercise for calorie burn is the one you can sustain consistently. A 30-minute walk done daily burns more weekly calories than a 60-minute run done once.
Walking calorie burn depends on speed, weight, and terrain. For a 155 lb person: Slow walk (2 mph): ~176 cal/hour (MET 2.8). Moderate walk (3 mph): ~232 cal/hour (MET 3.5). Brisk walk (3.5 mph): ~267 cal/hour (MET 4.3). Power walk (4.5 mph): ~372 cal/hour (MET 5.0). Uphill walking adds 30–60% more calories. Walking on sand or snow increases burn by 20–50%. A 10,000-step day typically burns 300–500 calories above resting, depending on pace and body weight.
Yes, significantly. Heavier people burn more calories doing the same activity because moving a larger mass requires more energy. A 200 lb person running at 6 mph burns approximately 755 calories per hour, while a 130 lb person at the same speed burns about 490 calories. This is why the formula includes body weight as a multiplier. As you lose weight, you burn fewer calories at the same activity — one reason weight loss can plateau without adjusting calorie intake or increasing exercise intensity.
EPOC (Excess Post-Exercise Oxygen Consumption) is the elevated calorie burn that continues after exercise ends as your body recovers. After moderate exercise, EPOC adds about 5–7% extra calories. After high-intensity exercise (HIIT, heavy strength training), EPOC can add 10–15% and last 12–24 hours. For example, if a HIIT session burns 400 calories during exercise, EPOC may add 40–60 additional calories over the following hours. Standard calorie calculators typically do not include EPOC.
Fitness trackers and smartwatches estimate calories using heart rate, motion sensors, and user profile data. Studies show accuracy varies widely: Chest strap HR monitors: within 5–10% of lab measurement. Wrist-based trackers: within 15–30% (tend to overestimate for low intensity and underestimate for high intensity). Our MET-based calculator provides estimates comparable to wrist trackers. For the most accurate tracking, use a chest strap HR monitor with a device that calculates calorie burn from continuous heart rate data.
It depends on your goal. For weight loss: Do not eat back all exercise calories — calorie estimates often overestimate by 15–30%. If you eat back everything, you may eliminate your deficit. A conservative approach: eat back 50% of estimated exercise calories. For maintenance or muscle gain: Yes, replace exercise calories to avoid unintended deficit. For endurance athletes (running 60+ min): Fueling during and after exercise is essential for recovery and performance. Always use your TDEE (which includes activity) rather than adding exercise calories on top of a separate diet.