Calories Burned Calculator

Use our free Calories Burned Calculator to estimate how many calories you burn during exercise. Enter your weight, activity type, and duration for instant results.

984.5K usesUpdated · 2026-04-25Runs locally · zero upload

How to Use Calories Burned Calculator

The Calories Burned Calculator gives you an instant estimate of energy expenditure based on three simple inputs.

  1. Enter your body weight — type your weight and select kg or lbs. The Calories Burned Calculator converts lbs to kg internally for accurate results.
  2. Choose your activity — select from 16 common activities including walking, running, cycling, swimming, jump rope, gym training, yoga, dancing, housework, and desk work.
  3. Set the duration — enter hours and minutes. The Calories Burned Calculator updates the moment you change any field and shows total calories, calories per hour, and calories per minute.

The Calories Burned Calculator is ideal for tracking a single workout or estimating the calorie impact of daily habits like housework or commuting on foot.

Formula & Theory — Calories Burned Calculator

The Calories Burned Calculator is built on the MET (Metabolic Equivalent of Task) framework, the gold standard used in exercise science and public health research.

Calories Burned = MET × Weight (kg) × Duration (hours)
Symbol Meaning
MET Metabolic Equivalent of Task (activity-specific constant)
Weight (kg) Body weight in kilograms
Duration (hours) Total exercise time in decimal hours

For example, a 70 kg person running at a moderate pace (MET ≈ 9) for 30 minutes burns approximately:

9 × 70 × 0.5 = 315 kcal

The Calories Burned Calculator uses the same MET compendium values published by Ainsworth et al. and referenced by the American College of Sports Medicine.

MET Values Used in This Calories Burned Calculator

Activity MET
Slow walking 2.5
Moderate walking 3.5
Fast walking 4.5
Slow running 7.0
Moderate running 9.0
Fast running 11.5
Leisure cycling 4.0
Moderate cycling 8.0
Leisure swimming 5.8
Lap swimming 8.0
Jump rope 11.0
Gym / weight training 5.0
Yoga 2.8
Dancing 5.0
Housework 3.5
Sitting / desk work 1.3

Limitations

The Calories Burned Calculator does not account for individual metabolic variation, fitness level, or environmental factors such as heat and elevation. Results are estimates and actual calorie burn may be 10–20% higher or lower.

Use Cases for Calories Burned Calculator

The Calories Burned Calculator is useful across a wide range of fitness and wellness scenarios:

  • Weight management — estimate the caloric deficit created by adding a daily 30-minute walk to your routine.
  • Workout planning — compare the calorie impact of cycling vs. swimming before choosing an activity.
  • Goal tracking — use the Calories Burned Calculator to set realistic weekly calorie-burn targets without a wearable device.
  • Everyday activity — discover that even housework burns meaningful calories and factor it into your daily energy balance.
  • Educational use — teachers and coaches can use the Calories Burned Calculator to demonstrate MET-based energy expenditure in health classes.
  • Dietary planning — combine results from the Calories Burned Calculator with a calorie-intake tracker to maintain or achieve a target body weight.

Whether you are a casual fitness enthusiast or a personal trainer, the Calories Burned Calculator provides a quick, evidence-based starting point for estimating energy expenditure.

Frequently asked questions about Calories Burned Calculator

How accurate is the Calories Burned Calculator?

The Calories Burned Calculator uses MET (Metabolic Equivalent of Task) values, which provide a scientifically validated estimate. However, actual calorie burn varies by individual fitness level, body composition, age, and exercise intensity. Treat results as useful approximations, not exact measurements.

What is a MET value?

MET stands for Metabolic Equivalent of Task. A MET of 1 equals the energy you expend at rest. Walking at a moderate pace has a MET of about 3.5, meaning it burns roughly 3.5× more calories than resting. The Calories Burned Calculator multiplies MET × body weight (kg) × duration (hours) to estimate total calorie expenditure.

Should I use kg or lbs in the Calories Burned Calculator?

You can use either unit — the Calories Burned Calculator automatically converts pounds to kilograms before computing. Choose whichever is more familiar to you.

Why does the Calories Burned Calculator show kcal instead of calories?

In everyday nutrition and fitness contexts, 'calories' almost always refers to kilocalories (kcal). The Calories Burned Calculator displays kcal, which is the same unit shown on food labels and fitness trackers.

Is my data stored?

No. All calculations happen in your browser; nothing is sent to a server.