Calories Burned Calculator

Calories burned during exercise depend on three main factors: your body weight, the duration, and the activity's intensity (measured in METs — Metabolic Equivalent of Task). 1 MET = energy used at rest. A 10 MET activity burns 10× as many calories as resting. The formula is: Calories = MET × weight(kg) × time(hours). Heavier people burn more calories doing the same activity because they're moving more mass. Our calculator includes 25+ common activities with peer-reviewed MET values from the 2011 Compendium of Physical Activities.

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local_fire_departmentCalories Burned

Total Burned
343
Very Vigorous intensity
Per Minute
11.4
Per Hour
686
MET Value
9.8

tips_and_updates Tips

  • • MET-based estimates are accurate within ±10-15% for most people
  • • Heavier individuals burn more calories doing the same activity
  • • Higher intensity = more calories per minute, not necessarily more total
  • • 30 min HIIT typically burns more than 60 min slow walking
  • • Strength training MET (3.5) underestimates EPOC (afterburn effect)
  • • Heart rate monitors give more personalized estimates
  • • Daily NEAT (non-exercise activity) often exceeds workout calories

How to Use This Calculator

1

Choose activity

Pick from 25+ common exercises.

2

Enter weight

Body weight in kg (or use lb alternative).

3

Enter duration

How many minutes you did the activity.

4

Review calories burned

Total + per minute + per hour.

The Formula

MET values are standardized: 1 MET = oxygen consumption at rest (~3.5 ml O2/kg/min ≈ 1 kcal/kg/hour). Walking is ~3.5 MET, jogging ~7, running 9-12, cycling 4-10 (depends on speed), HIIT ~8. The calculator uses validated MET values from the Compendium of Physical Activities.

Calories Burned = MET × Weight (kg) × Duration (hours)

lightbulb Variables Explained

  • MET Metabolic Equivalent of Task — multiple of resting metabolism
  • Weight Body weight in kilograms
  • Duration Time spent in the activity, in hours

tips_and_updates Pro Tips

1

MET-based estimates are accurate within ±10-15% for most people

2

Heavier individuals burn more calories doing the same activity

3

Higher intensity = more calories per minute, not necessarily more total

4

30 min HIIT typically burns more than 60 min slow walking

5

Strength training MET (3.5) underestimates EPOC (afterburn effect)

6

Heart rate monitors give more personalized estimates

7

Daily NEAT (non-exercise activity) often exceeds workout calories

Understanding how many calories you burn during physical activity is essential for weight management, athletic training, and overall fitness planning. Calorie expenditure during exercise depends on three primary factors: your body weight, the duration of the activity, and its intensity as measured by the Metabolic Equivalent of Task (MET). One MET represents the energy cost of sitting quietly, approximately 3.5 milliliters of oxygen per kilogram of body weight per minute. An activity rated at 8 METs burns eight times as many calories as resting. This calories burned calculator uses peer-reviewed MET values from the 2011 Compendium of Physical Activities to estimate energy expenditure across more than 25 common exercises — from walking and jogging to swimming, cycling, weightlifting, and yoga. Simply enter your weight and the duration of your workout to receive an accurate estimate of total calories burned. The results help you balance energy intake with expenditure, set realistic weight loss goals (a deficit of approximately 3,500 calories equals one pound of fat loss), and compare the efficiency of different workouts for your schedule and fitness level.

Body Weight and Its Effect on Calorie Expenditure

Body weight has a direct, linear relationship with calories burned during weight-bearing activities. The formula Calories = MET × weight (kg) × time (hours) means a 90 kg person burns roughly 50% more calories than a 60 kg person doing the identical workout at the same intensity and duration. This is because heavier individuals must move more mass against gravity, requiring more muscular work and oxygen consumption. For a 60 kg person, 30 minutes of running at 6 mph burns about 294 calories; for a 90 kg person, the same run burns 441 calories. This principle explains why heavier individuals often see faster initial weight loss when starting an exercise program. However, as you lose weight, the same workout burns fewer calories — a phenomenon that contributes to weight loss plateaus. To maintain the same calorie burn as you get lighter, you must increase either intensity (higher MET) or duration. Non-weight-bearing activities like cycling and swimming show a somewhat smaller weight effect because the body is supported.

Common Mistakes When Estimating Calories Burned

The most widespread error is trusting calorie counts displayed on cardio machines. Studies from the Stanford University School of Medicine found that elliptical trainers overestimate calorie burn by an average of 42%, and stationary bikes by about 7%. Treadmills are the most accurate but still overestimate by 13% on average because they do not account for individual biomechanical efficiency. Fitness trackers and smartwatches also have significant error margins — a Stanford study showed wrist-worn devices can be off by 27-93% depending on the activity type. Another common mistake is assuming all minutes of exercise are equal: a 30-minute run with warm-up and cool-down phases averages a lower MET than 30 minutes at a sustained race pace. People also frequently underestimate rest time during weightlifting sessions — actual lifting may account for only 15-20 minutes of a 45-minute gym session. For the most accurate tracking, use MET-based calculations with honest assessments of actual working time and intensity, and remember that the afterburn effect (EPOC) adds only 6-15% to total calorie expenditure for most workouts.

Frequently Asked Questions

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Data sourced from trusted institutions

All formulas verified against official standards.

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