Calories Burned Calculator | Exercise METs

Calories Burned Calculator: Complete MET Guide & Activity Database

Calculate exercise calories using MET (Metabolic Equivalent of Task) values from the Compendium of Physical Activities. Get personalized estimates for 200+ activities including running, walking, cycling, swimming, gym workouts, and sports.

How the Math Works

This calculator estimates energy expenditure using MET (Metabolic Equivalent of Task) values from the Compendium of Physical Activities, the peer-reviewed gold standard for exercise intensity classification. One MET equals the energy cost of sitting quietly—approximately 1 calorie per kilogram of body weight per hour. All activities are expressed as multiples of this baseline.

\text{Calories (gross)} = \text{MET} \times \text{Weight (kg)} \times \text{Duration (hours)}

Net calories subtract resting burn to show only the extra energy from exercise:

\text{Calories (net)} = \text{Gross} - (1 \times \text{Weight} \times \text{Duration})

Worked example:

Running 6 mph (9.8 METs) for 30 minutes (0.5 hr) at 70 kg: Gross = 9.8 × 70 × 0.5 = 343 calories. Net = 343 − (1 × 70 × 0.5) = 308 calories. The 35-calorie difference is what you’d burn sitting during that time.
Why weight matters:

Moving more mass requires more energy. A 200 lb person performing identical exercise burns roughly 30% more calories than a 150 lb person—the formula multiplies by weight directly.
Accuracy range:

MET-based calculations are accurate within ±15–20% for most people. Trained individuals may burn 5–10% fewer calories at the same pace due to improved mechanical efficiency.

How to Use This Calculator

Enter your body weight in pounds or kilograms. Choose Activity mode to pick from categorized exercises with preset MET values, or Distance mode for running, cycling, or walking when you know pace and distance.

Activity selection:

Browse categories (Running, Walking, Cycling, Swimming, Gym, Sports) and select the specific intensity level. “Running, 6 mph” (9.8 METs) differs significantly from “Jogging, general” (7.0 METs)—when uncertain, choose the lower option.
Duration:

Enter time spent actively exercising. Exclude warm-up and rest periods unless they involve continuous movement. For very long sessions (2+ hours), actual burn may be lower than calculated due to fatigue.
Gross vs. net:

Use gross calories for total daily expenditure calculations. Use net calories for weight-loss planning and deciding whether to eat back exercise calories. Budget about 75–80% of net when eating back to account for estimation error.

What Is MET? Understanding the Science of Calorie Burn

The MET System Explained

MET (Metabolic Equivalent of Task) is the scientific standard for measuring exercise intensity, developed by researchers and used worldwide in clinical and fitness settings. Understanding MET is key to understanding how this calculator, and your body, works.

The Definition:

1 MET = the energy cost of sitting quietly at rest, approximately 1 calorie per kilogram of body weight per hour (1 kcal/kg/hr). This is your baseline, the minimum energy your body uses just to exist. All activities are measured as multiples of this baseline.
How to Interpret MET Values:

1 MET: Resting (sitting, sleeping). 2-3 METs: Light activity (slow walking, light housework). 3-6 METs: Moderate activity (brisk walking, recreational cycling). 6-9 METs: Vigorous activity (running, competitive sports). 9+ METs: Very high intensity (sprinting, HIIT, elite sports).
The Calorie Formula:

Calories Burned = MET × Weight (kg) × Duration (hours)
Example: Running at 6 mph (9.8 METs) for 30 minutes (0.5 hr) at 70 kg: 9.8 × 70 × 0.5 = 343 calories
Why MET Works:

MET elegantly accounts for body weight automatically, heavier people burn proportionally more calories because the formula multiplies by weight. It also standardizes intensity across activities, allowing direct comparison: 30 min of tennis singles (8.0 METs) burns approximately the same as 30 min of basketball (8.0 METs) for the same person.
MET Data Source:

This calculator uses values from the Compendium of Physical Activities, a peer-reviewed database maintained by researchers at Arizona State University. It contains MET values for 800+ activities derived from direct measurement studies. Values are updated periodically as new research becomes available.

What This Calculator Does & Who It's For

Calculator Purpose & Ideal Users

This calculator estimates energy expenditure by matching your selected activity to validated MET values, then applying the calorie formula with your weight and duration.

Primary Use Cases:

Workout logging: Estimate session calories for tracking apps. Weight management: Understand exercise contribution to daily deficit/surplus. Activity comparison: Compare calorie efficiency of different exercises. Training planning: Choose activities to meet calorie burn targets. Food perspective: See exercise in terms of food equivalents.
Ideal Users:

Fitness trackers: Those counting calories or macros who need exercise data. Weight loss seekers: Planning calorie deficits with exercise contribution. Athletes: Understanding energy demands for fueling strategies. Trainers: Estimating client workout expenditure. Health-conscious individuals: Quantifying physical activity benefits.
Who Should Use Caution:

Those with heart conditions: Consult physician before high-MET activities. Eating disorder history: Calculator should support health goals, not obsession. Elite athletes: Efficiency adaptations mean MET may overestimate your burn. Pregnant women: Standard MET values don't account for pregnancy metabolism.
Accuracy Range:

Expect ±15-20% accuracy for general populations. Individual variation comes from: fitness level (trained people are more efficient), body composition (muscle vs. fat ratio), age (metabolism slows ~2% per decade), genetics (10-15% metabolic variation exists), and environmental conditions (heat, cold, altitude all affect burn).

Understanding Each Calculator Input

Input Field Guide

Accurate inputs produce accurate results. Here's what each field means and how to optimize your entries.

Body Weight:

The largest factor in calorie burn, heavier bodies require more energy to move. Impact: 20 lb difference = ~15-20% calorie difference. Tip: Use your "active weight" (clothed, hydrated) rather than morning scale weight for realistic gym-session estimates.
Calculator Mode (Activity vs. Distance):

Activity mode: Select from 200+ categorized activities with pre-set MET values. Best for gym workouts, sports, and activities where you know time but not distance. Distance mode: Enter distance and time for running, cycling, or walking. Calculator determines your pace and selects appropriate MET. Best for outdoor cardio with GPS tracking.
Activity Category & Selection:

Activities are grouped into 15 categories (Running, Walking, Cycling, Swimming, etc.). Each has multiple intensity levels with different METs. Critical: "Running, 6 mph" (9.8 METs) differs dramatically from "Jogging, general" (7.0 METs). Select the intensity matching your actual effort, when uncertain, choose the lower option.
Duration:

Time spent actively exercising. Exclude warm-up, rest periods, and transitions unless they involve continuous movement. Note: For very long sessions (2+ hours), actual burn may be lower than calculated due to fatigue and efficiency gains. Consider breaking into segments.
Gross vs. Net Display:

Gross: Total calories burned during activity, including what you'd burn at rest. Use for total daily expenditure. Net: Extra calories beyond resting, what you actually "earned" through exercise. Use for weight loss planning and deciding whether to eat back exercise calories.

MET Values Reference: Common Activities

Activity MET Database

Reference values from the Compendium of Physical Activities. Find your activity and note the MET to understand its intensity relative to others.

Running:

5 mph (12 min/mile): 8.3 METs | 6 mph (10 min/mile): 9.8 METs | 7 mph (8.5 min/mile): 11.0 METs | 8 mph (7.5 min/mile): 11.8 METs | 9 mph (6.5 min/mile): 12.8 METs | 10 mph (6 min/mile): 14.5 METs | Running stairs: 15.0 METs | Jogging general: 7.0 METs
Walking:

2.0 mph (slow): 2.0 METs | 2.5 mph (leisurely): 2.8 METs | 3.0 mph (moderate): 3.3 METs | 3.5 mph (brisk): 4.3 METs | 4.0 mph (very brisk): 5.0 METs | 4.5 mph (race walking): 7.0 METs | Hiking cross-country: 6.0 METs | Hiking with pack: 7.5 METs
Cycling:

<10 mph (leisure): 4.0 METs | 10-12 mph (light): 6.8 METs | 12-14 mph (moderate): 8.0 METs | 14-16 mph (vigorous): 10.0 METs | 16-19 mph (racing): 12.0 METs | >20 mph: 15.8 METs | Stationary moderate: 7.0 METs | Spinning class: 8.5 METs | Mountain biking: 8.5 METs
Swimming:

Leisurely: 6.0 METs | Laps moderate: 7.0 METs | Laps vigorous: 9.8 METs | Freestyle fast: 10.0 METs | Backstroke: 7.0 METs | Breaststroke: 10.3 METs | Butterfly: 13.8 METs (highest swimming) | Water aerobics: 5.3 METs | Treading water: 3.5 METs
Gym & Fitness:

Weight lifting light: 3.5 METs | Weight lifting vigorous: 6.0 METs | Circuit training: 8.0 METs | CrossFit/HIIT: 12.0-12.5 METs | Elliptical moderate: 5.0 METs | Elliptical vigorous: 8.0 METs | Rowing machine vigorous: 12.0 METs | Jump rope fast: 12.3 METs | Stair climber: 9.0 METs
Sports:

Basketball game: 8.0 METs | Soccer competitive: 10.0 METs | Tennis singles: 8.0 METs | Tennis doubles: 6.0 METs | Volleyball competitive: 6.0 METs | Golf walking: 4.3 METs | Racquetball competitive: 10.0 METs | Squash: 12.0 METs | Boxing sparring: 9.0 METs | Martial arts: 10.3 METs
Daily Activities:

Cleaning house: 3.3 METs | Gardening: 3.8 METs | Mowing lawn (push): 4.5-5.5 METs | Shoveling snow: 6.0 METs | Playing with kids (active): 5.8 METs | Cooking: 2.0 METs | Walking at work: 2.5 METs | Carrying boxes: 7.5 METs

Gross vs. Net Calories: When to Use Each

Understanding the Distinction

The difference between gross and net calories is small but important for accurate planning. Using the wrong one can throw off your daily calorie math.

Gross Calories Defined:

Total calories burned during the activity period, including what you'd burn at rest.
Gross = MET × Weight × Duration
This is the raw output of the MET formula and what most fitness trackers display.
Net Calories Defined:

Extra calories burned beyond resting, the actual "work" of exercise.
Net = Gross - (1 × Weight × Duration)
This subtracts the ~1 MET you'd burn sitting still during that time.
Practical Example:

A 70 kg person running 6 mph (9.8 METs) for 30 minutes: Gross: 9.8 × 70 × 0.5 = 343 cal. Resting component: 1 × 70 × 0.5 = 35 cal. Net: 343 - 35 = 308 cal. The difference (35 cal) is what you'd burn sitting for that 30 minutes anyway.
When to Use Gross:

Use for calculating Total Daily Energy Expenditure (TDEE) when you're adding up all activity throughout the day. Your TDEE calculations already account for resting metabolism separately, so gross values avoid double-subtracting.
When to Use Net:

Use for weight loss planning and "eating back" exercise calories. Net shows what you actually earned through effort. If deciding whether to eat an extra 300 calories after a workout, use net, that's the real addition to your daily burn.

Applying Your Results: Practical Strategies

From Numbers to Action

Calorie burn estimates are tools, not gospel. Here's how to apply them effectively for different goals.

For Weight Loss:

Exercise contributes to deficit but don't rely on it exclusively. Conservative approach: Budget for 75-80% of calculated NET calories (accounts for overestimation). If calculator shows 400 net, budget 300-320. Track weight trends over 2-3 weeks, if losing faster than expected, you can eat back more; slower, eat back less.
For Fitness Tracking:

Use weekly totals rather than daily for consistency. Health guidelines recommend 150+ minutes of moderate activity (3-6 METs) OR 75+ minutes vigorous (6+ METs) weekly. That's roughly 1,000-2,000 calories of exercise per week for most adults. Compare activities at equal duration to find your most efficient options.
For Workout Fueling:

Under 60 min: Pre-workout fuel usually unnecessary; water sufficient. 60-90 min: Consider 30-60g carbs during for endurance activities. 90+ min: Plan 200-300 calories per hour during activity. Post-workout: 20-40g protein within 2 hours supports recovery, but total daily protein matters more than timing.
For Activity Selection:

Higher MET ≠ always better. A sustainable 45-minute walk (4.3 METs) burns more than an unsustainable 15-minute run you have to stop. Match intensity to your fitness level and recovery capacity. Mix high-MET sessions with moderate recovery sessions for sustainable weekly volume.
Validation Strategy:

Treat calculator output as an estimate requiring calibration. Week 1-2: Track exercise calories and food intake accurately. Week 3-4: Compare predicted vs. actual weight change. Adjust: If losing slower than predicted, calculator overestimates for you, reduce eating-back percentage. If losing faster, you can trust more of the calculated calories.

FAQ

What is a MET and how does this calculator use it?

MET (Metabolic Equivalent of Task) is a scientific measure of exercise intensity. 1 MET = sitting quietly, burning about 1 calorie per kg of body weight per hour. Running at 6 mph = 9.8 METs, meaning you burn 9.8× your resting rate. This calculator multiplies MET × your weight × duration to estimate calories burned.

How accurate is this calories burned calculator?

MET-based calculations are accurate within ±15-20% for most people. The calculator uses values from the Compendium of Physical Activities, the gold standard research database. Accuracy depends on selecting the right intensity level, "running 6 mph" differs significantly from "jogging general." Heart rate monitors can improve accuracy to ±10-15%.

Should I use gross or net calories?

Use NET calories for weight loss planning, this shows only the EXTRA calories you burned above what you'd burn sitting still. Use GROSS calories when calculating total daily energy expenditure. Example: 30 min running burns 350 gross calories, but only ~315 net calories (subtracting the 35 you'd burn at rest).

Why does my weight affect calories burned so much?

Moving more mass requires more energy, physics. A 200 lb person doing identical exercise burns ~30% more calories than a 150 lb person because they're moving an extra 50 lbs with every movement. This is why the formula is MET × Weight × Time. It also means as you lose weight, you burn fewer calories for the same activity.

What activity burns the most calories?

Highest MET activities: Running stairs (15.0), cross-country skiing vigorous (14.0), running 10 mph (14.5), swimming butterfly (13.8), jump rope fast (12.3), HIIT/CrossFit (12.0-12.5). But sustainability matters, 30 minutes of activity you can complete beats 10 minutes of something you can't sustain.

Why do fitness trackers show different calorie counts?

Fitness trackers use heart rate data combined with movement, while this calculator uses standardized MET values. Trackers can overestimate by 30-50% because elevated heart rate from caffeine, stress, or heat isn't the same as exercise intensity. MET-based calculations are more conservative and often more accurate for planning.

How should I use calorie burn for weight loss?

Don't eat back all exercise calories, calculators overestimate by ~20% on average. If the calculator shows 400 calories burned, budget for 300-320 net calories. Track actual weight trends over 2-3 weeks to calibrate your personal accuracy. Focus on weekly totals rather than daily perfection.

Does getting fitter mean I burn fewer calories?

Yes. Trained individuals become more mechanically efficient, an experienced runner burns 5-10% fewer calories per mile than a beginner at the same pace. Elite athletes can be 15-20% more efficient. To maintain the same burn, increase intensity, duration, or try activities your body hasn't adapted to.

Profile

Body weight

Activity

Duration

Calorie display

Activity report

Food equivalence

Walking comparison

MET scale

Energy Expenditure Insights

The EPOC Afterburn

The Compound Movement Advantage

The Environmental Multiplier

The Diminishing Returns Curve