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Activity Calorie Burn Calculator – Calories Burned by Activity & Duration

Find out how many calories any activity burns based on your weight and how long you do it. Our calculator covers hundreds of activities using MET-based calculations.

How to Use This Activity Calorie Calculator
Three simple steps to calculate calories burned
1

Enter your weight

Input your current body weight in kilograms or pounds. Heavier people burn more calories doing the same activity, so this is a key factor in the calculation.

2

Choose your activity

Select from the dropdown list or enter a custom MET value if you know it. Each activity has a specific MET value that represents its energy cost.

3

Set duration and calculate

Enter how long you performed the activity in minutes or hours. Hit calculate and see exactly how many calories you burned.

Understanding MET Values
What MET means and how it affects calorie burn

MET stands for Metabolic Equivalent of Task. It's a standardized way to measure how much energy different activities require. One MET equals the amount of energy your body uses while sitting quietly – basically your baseline calorie burn at complete rest.

Here's the practical breakdown: 1 MET = 1 calorie per kilogram of body weight per hour. So if you weigh 70 kg and sit quietly (1 MET) for one hour, you burn about 70 calories. Walk at a moderate pace (3.5 METs) for that same hour, and you burn 70 × 3.5 = 245 calories.

MET values are determined through laboratory testing where researchers measure oxygen consumption during different activities. The numbers are then averaged across populations to create standardized values. Running, for example, consistently measures around 8-12 METs because it requires that much more energy than resting.

Why does MET vary by intensity? Simple – harder work requires more energy. Walking slowly might be 2 METs, but power walking jumps to 5 METs. Your body needs more fuel to move faster, lift heavier weights, or sustain higher effort levels. That's why intensity matters more than duration for total calorie burn in many cases.

Calories Burned by Common Activities
MET values for everyday exercises and activities
ActivityMET ValueCalories (70kg, 30 min)
Sitting quietly1.0~35 kcal
Walking slowly (2 mph)2.0~70 kcal
Walking briskly (3.5 mph)3.5~122 kcal
Cycling moderate (12-14 mph)6.0~210 kcal
Running (6-10 mph)8.0 - 12.0~280 - 420 kcal
Swimming (moderate to vigorous)6.0 - 10.0~210 - 350 kcal
Weight lifting3.0 - 6.0~105 - 210 kcal

Note: Calories shown are for a 70 kg (154 lb) person performing each activity for 30 minutes. Actual burn varies by individual weight, fitness level, and effort.

Factors That Affect Calorie Burn
Why two people burn different calories doing the same activity

Body weight

Heavier people burn more calories. A 90 kg person burns about 29% more calories than a 70 kg person doing the same activity for the same duration. More mass requires more energy to move.

Fitness level

Trained athletes are more efficient. Their bodies have adapted to perform activities with less energy waste. A beginner might burn 10-15% more calories than an experienced athlete doing the same workout.

Age

Metabolism naturally slows with age. After age 30, BMR drops about 1-2% per decade. Older adults may burn slightly fewer calories than younger people doing identical activities.

Muscle mass

More muscle means higher calorie burn. Muscle tissue is metabolically active and burns more calories than fat, even at rest. Two people at the same weight but different body compositions will burn different amounts.

Exercise intensity

How hard you push matters. Running at 8 mph burns significantly more than jogging at 5 mph. Higher intensity = higher MET value = more calories burned per minute.

Exercise Intensity Zones
Understanding light, moderate, and vigorous intensity
Intensity LevelMET RangeExample Activities
Light intensity2-3 METCasual walking, light housework, slow dancing, fishing
Moderate intensity3-6 METBrisk walking, doubles tennis, gardening, cycling leisurely
Vigorous intensity6+ METRunning, swimming laps, cycling fast, singles tennis, basketball

Health guidelines recommend at least 150 minutes of moderate-intensity or 75 minutes of vigorous-intensity activity per week for adults.

Frequently Asked Questions

How accurate are calorie burn estimates?
MET-based calculations are estimates, not exact measurements. They're typically accurate within 10-20% for most people. The actual number depends on your individual metabolism, body composition, and how efficiently your body performs the activity. For most practical purposes – tracking fitness, planning weight loss – this level of accuracy is perfectly adequate.
Why do different activities burn different calories?
Different activities recruit different muscle groups and require varying levels of effort. Running uses large leg muscles continuously and requires significant cardiovascular output – that's why it burns so many calories. Sitting uses minimal muscle activity, so calorie burn stays near baseline. Activities that engage more muscle mass at higher intensity always burn more.
Does fitness level affect calorie burn?
Yes, but not in the way most people think. Fitter people are more efficient – their bodies have adapted to perform activities with less wasted energy. This means a trained runner might burn slightly fewer calories than a beginner running the same distance. However, fit people can also sustain higher intensities longer, which can offset this efficiency advantage.
What is the best exercise for burning calories?
The best exercise is the one you'll actually do consistently. That said, running, swimming, and cycling at vigorous intensities top the calorie-burn charts. High-intensity interval training (HIIT) also delivers excellent calorie burn in less time. But don't overlook walking – it's sustainable, low-impact, and the calories add up over time.
Do I burn calories after exercise?
Yes, this is called EPOC (Excess Post-exercise Oxygen Consumption) or the "afterburn effect." After intense exercise, your body continues burning extra calories as it returns to baseline – repairing muscle, restoring oxygen levels, and clearing metabolic waste. The effect is modest for moderate exercise but can add 6-15% to total calorie burn after vigorous workouts.

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