Calories Burned Calculator
How many calories an activity burns for your weight
Free Calories Burned Calculator
Estimate the calories an activity burns, based on your weight and time
Pick an activity, enter your weight and how long you did it, and this free calculator estimates how many calories you burned. It uses MET values (metabolic equivalents) from the standard physical-activity compendium, so the numbers reflect the real intensity of each exercise — running burns far more per minute than a gentle walk. You also see the burn rate per 30 minutes and per hour, and a rough equivalent in grams of body fat. This tool is about calories out (expenditure); if you want your daily calorie needs, use our calorie needs tool instead. Everything runs in your browser and nothing is uploaded.
Features
By Real Intensity
Uses MET values so each activity reflects its true calorie burn.
Weight-Based
Heavier bodies burn more; the estimate scales with your weight in kg or lb.
Rate Breakdown
See calories per 30 minutes and per hour, plus a fat-equivalent.
100% Private
All calculations run in your browser; nothing is uploaded.
Roughly How Many Calories?
Higher burn (per 30 min, ~70 kg)
- Running ~9.7 km/h: ~345 kcal
- Jump rope: ~430 kcal
- Swimming: ~280 kcal
- Cycling (moderate): ~265 kcal
Lower burn (per 30 min, ~70 kg)
- Brisk walking: ~120 kcal
- Yoga: ~105 kcal
- Weight training: ~175 kcal
- Housework: ~115 kcal
Frequently Asked Questions
How are calories burned calculated?
The formula is calories = MET × weight in kg × duration in hours. MET (metabolic equivalent) is a standard intensity value for each activity, so running has a much higher MET than walking.
Why does my weight matter?
Moving a heavier body costs more energy, so calories burned scale with body weight. Enter your weight in kg or lb and the estimate adjusts automatically.
How accurate is it?
It's a solid estimate based on average MET values. Real burn varies with fitness, effort, terrain and individual metabolism, so treat it as a guide rather than an exact figure.
Is this the same as my daily calorie needs?
No. This tool estimates calories burned by a specific activity (calories out). To find how many calories you should eat per day, use a daily calorie / TDEE calculator instead.
Is it free?
Yes — completely free, no sign-up, and it works in your browser on any device.