Calories Burned Calculator
Calculate calories burned during various physical activities using METs (Metabolic Equivalent of Task). This calculator helps you understand energy expenditure for different exercises including walking, running, cycling, swimming, weightlifting, yoga, and sports. Enter your weight, select an activity, and specify duration to get instant results showing calories burned per minute, per hour, and total for your session. Perfect for fitness planning, weight management, or tracking exercise effectiveness. The calculator uses scientifically validated MET values and provides visual charts to help you compare different activities. All calculations happen instantly in your browser with complete privacy—no data is stored or transmitted.
Calories Burned Calculator
How it works: This calculator uses METs (Metabolic Equivalent of Task) to estimate calories burned. METs represent the energy cost of physical activities. The formula is: Calories = METs × Weight(kg) × 3.5 ÷ 200 × Duration(minutes). Different activities have different MET values based on their intensity.
What Is a Calories Burned Calculator?
A calories burned calculator estimates the energy expenditure of a physical activity based on its intensity, your body weight, and how long you exercised. It uses MET values (Metabolic Equivalents of Task) — a standardized measure of exercise intensity published by the American College of Sports Medicine — to produce an estimate in kilocalories (kcal).
The result is an estimate, not a measurement. Actual calorie burn varies with fitness level, muscle mass, temperature, terrain, and individual metabolism. However, MET-based estimates are the most widely validated method for population-level exercise energy calculations and are used in clinical research and fitness apps worldwide.
ToolYard's calculator covers over 100 activities and accepts weight in either pounds or kilograms. Results appear instantly in your browser with no data sent to any server.
How to Use This Calories Burned Calculator
- Enter your body weight in pounds or kilograms.
- Select or search for the activity (e.g., "running 6 mph", "cycling moderate", "yoga").
- Enter the duration in minutes.
- The result shows estimated calories burned using the MET formula.
- Compare multiple activities side-by-side to plan your workout week.
Worked Example: Lisa's 30-Minute Run
Lisa weighs 150 lbs (68 kg) and runs at 6 mph for 30 minutes. Running at 6 mph has a MET value of 9.8.
- Formula: Calories = MET × weight (kg) × time (hours)
- Calories = 9.8 × 68 × 0.5 = 333 kcal
- Alternative formula variant: (MET × 3.5 × kg ÷ 200) × minutes = (9.8 × 3.5 × 68 ÷ 200) × 30 ≈ 350 kcal
Comparison for the same 30-minute session, same weight:
| Activity | MET | Calories (150 lb) |
|---|---|---|
| Walking (3 mph) | 3.5 | 119 |
| Cycling (moderate) | 7.5 | 255 |
| Running (6 mph) | 9.8 | 333 |
| Jumping rope | 11.0 | 374 |
MET Values for Common Activities
| Activity | MET | Intensity | Cal/30 min (150 lb) |
|---|---|---|---|
| Sitting/desk work | 1.3 | Sedentary | 44 |
| Walking (3 mph) | 3.5 | Light | 119 |
| Yoga | 2.5–4.0 | Light–Moderate | 85–136 |
| Weight training | 3.5–6.0 | Moderate | 119–204 |
| Cycling (moderate) | 7.5 | Vigorous | 255 |
| Swimming laps | 6.0–10.0 | Vigorous | 204–340 |
| Running (6 mph) | 9.8 | High | 333 |
| Jumping rope | 10.0–12.0 | Very High | 340–408 |
MET values from the 2011 Compendium of Physical Activities (Ainsworth et al.).
Key Concepts: METs, Gross vs. Net Calories, and EPOC
MET (Metabolic Equivalent of Task) — 1 MET = oxygen consumption at rest (~3.5 mL O₂/kg/min). A MET of 7.5 means the activity requires 7.5× the resting metabolic rate. METs allow calorie estimates to be applied across different body weights.
Gross vs. net calories — Gross calories include resting metabolism during exercise. Net calories subtract what you would have burned resting. Most fitness trackers show gross calories. This calculator uses the standard gross MET formula.
EPOC (Excess Post-exercise Oxygen Consumption) — Also called "afterburn," EPOC is the elevated calorie burn that continues after high-intensity exercise as the body returns to resting state. It adds 6–15% to total session burn for HIIT workouts, less for steady-state cardio.
Weight and calorie burn — Heavier individuals burn more calories per session at the same MET because the formula is linear in body weight. A 200 lb person burns ~33% more calories than a 150 lb person doing the same activity at the same intensity.
Tips and Common Mistakes
- MET estimates have ±20–30% error — Fitness level, muscle mass, heat, and terrain all affect actual burn. Use MET calories for planning, not precision tracking.
- Don't eat back all calories burned — Exercise calorie estimates tend to be higher than actual burn. Many people over-compensate by eating more than they expended, stalling weight loss goals.
- Resting calories are not "bonus" burn — The gross calorie figure includes resting metabolism. You would have burned ~60–80 kcal just sitting for 30 minutes anyway; that is already included.
- Cardio vs. strength for total burn — Running burns more calories per session, but strength training raises resting metabolism over weeks. A combination approach maximizes long-term calorie expenditure.
- Duration matters as much as intensity — A 60-minute walk (MET 3.5) burns more calories than a 20-minute run (MET 9.8) for most body weights. Don't discount lower-intensity, longer activities.
Frequently Asked Questions
How accurate is a calories burned calculator?
MET-based estimates are ±20–30% of actual burn for most activities. They are reliable for comparing activities and estimating weekly expenditure, but not as precise as metabolic testing equipment.
How many calories does 30 minutes of walking burn?
At 3 mph (MET 3.5), roughly 119 kcal for a 150 lb person, 149 kcal for 180 lbs, and 99 kcal for 120 lbs. Pace, terrain, and body composition affect actual burn.
How many calories does running burn per mile?
Approximately 0.63 × body weight in pounds per mile. A 150 lb runner burns ~95 kcal per mile. This rule of thumb is consistent across a wide range of paces.
What is a MET value?
A Metabolic Equivalent of Task — the ratio of exercise metabolic rate to resting metabolic rate. 1 MET = rest; 4 METs = 4× resting intensity. MET values are standardized across the Compendium of Physical Activities.
Does weight affect calories burned?
Yes, directly. Calories burned = MET × weight (kg) × time (hours). A heavier person moves more mass and burns proportionally more calories for the same activity at the same intensity.
Which exercise burns the most calories per hour?
High-intensity activities with METs of 10–15: running fast, cycling hard, rowing, jumping rope, and cross-country skiing. At MET 12, a 150 lb person burns ~680 kcal/hour.
How many calories burned to lose 1 pound?
Approximately 3,500 kcal of deficit (calories burned minus calories eaten) equals roughly 1 lb of fat loss, based on the standard energy balance model. This is a useful estimate, though individual metabolism varies.
What related tools should I use?
Combine this with the target heart rate calculator to train at the right intensity, or the pace calculator to estimate burn at specific running paces.