Light exercise — a gentle stroll, easy cycling, restorative yoga, or light housework — burns fewer calories per hour than vigorous workouts, but it still adds up over a day. This calculator estimates how many calories you burn during light-intensity activities based on your weight, the activity you choose, and how long you keep moving.
Using the standard MET (Metabolic Equivalent of Task) values published in the 2011 Compendium of Physical Activities, the tool applies the widely accepted formula: calories per hour = MET × weight (kg) × 1.0. You can enter your weight in pounds or kilograms, pick from a list of common light activities, and adjust the duration to see your total burn. A step-by-step breakdown shows exactly how the estimate is derived, so you can understand the math behind the number.
Whether you're tracking daily movement, planning a gentle fitness routine, or just curious about your stroll around the park, this calculator gives you a quick, reliable estimate. It's designed for everyone — from beginners to those who prefer low-impact exercise.
🧮 Light Activity Calorie Burn
How to Use This Tool
Enter your weight in kilograms or pounds, select a light activity from the dropdown, and set how long you were active. The calculator uses the MET value for that activity and your weight to estimate calories burned per hour, then multiplies by your duration. You can use the quick-fill buttons to load common weights and durations, and the reset button clears everything.
For the most accurate estimate, use your current body weight (not your goal weight) and be honest about the intensity of your activity. If you switch between activities during a session, calculate each segment separately and add the results. The tool is designed for light activities with MET values between 2.0 and 4.0, so if you're doing something more vigorous, consider a different calculator.
How It Works
The estimate is based on the Metabolic Equivalent of Task (MET) system. One MET is the energy cost of sitting quietly, roughly 1 kcal per kilogram of body weight per hour. Light activities have MET values between 2.0 and 4.0, meaning they burn 2 to 4 times the resting rate. The formula is:
Calories per hour = MET × weight (kg)
For example, a 70 kg person walking at 3.0 mph (MET 3.0) burns 3.0 × 70 = 210 kcal per hour.
MET values are taken from the 2011 Compendium of Physical Activities, a widely used research resource. Individual results vary based on fitness level, terrain, and efficiency of movement. The formula assumes a steady-state activity and does not account for the afterburn effect or individual metabolic differences.
Worked Examples
Example 1: A 60 kg person does 45 minutes of Hatha yoga (MET 2.5). Calories per hour = 2.5 × 60 = 150 kcal. For 0.75 hours, total = 150 × 0.75 = 112.5 kcal.
Example 2: A 180 lb person (81.6 kg) cycles slowly at 8 mph (MET 4.0) for 30 minutes. Calories per hour = 4.0 × 81.6 = 326.4 kcal. Total = 326.4 × 0.5 = 163.2 kcal.
Example 3: A 75 kg person does light housework (MET 2.0) for 1.5 hours. Calories per hour = 2.0 × 75 = 150 kcal. Total = 150 × 1.5 = 225 kcal.
Tips & Best Practices
- Use your current weight, not your goal weight, for accurate estimates.
- If you're doing intervals of light and moderate activity, calculate each segment separately.
- Remember that light exercise still contributes to your daily energy expenditure — every bit counts.
- For weight management, combine this estimate with your total daily calorie intake.
- Wear a fitness tracker to compare your actual burn with the estimate and adjust your routine accordingly.
Factors Affecting Accuracy
MET values are averages for typical adults. Your actual burn can be higher if you're less fit, moving on uneven terrain, or carrying extra weight. Conversely, very efficient movers may burn slightly less. The calculator gives a solid ballpark, not a precise measurement.
Other factors include your age, gender, and body composition. Muscle mass increases your resting metabolic rate, so a muscular person may burn more than the estimate. Environmental conditions like heat or cold can also raise your energy expenditure slightly. For the most accurate personal data, consider a heart rate monitor or a metabolic test.
Frequently Asked Questions
What counts as light exercise? Activities with MET values below 3.0, like slow walking, gentle yoga, or light housework. Moderate starts around 3.0–6.0 METs.
Can I use this for walking? Yes, the dropdown includes several walking speeds. For a more detailed walking estimate, try the Walking MET Calculator.
How does this compare to vigorous exercise? Vigorous activities burn more per hour, but light exercise is easier to sustain and recover from, making it great for daily movement.
Is this accurate for me? It's an estimate based on population averages. For personalized data, consider a heart rate monitor or fitness tracker.
Why do I see different numbers on my treadmill? Treadmills often use a different formula that includes your speed and incline, and they may overestimate. This calculator uses the standard MET method, which is more conservative.
Additional Resources
For the official MET values, see the Compendium of Physical Activities. For general physical activity guidelines, visit the World Health Organization.