Calorie Burn Calculator

Calculate Calories Burned

Enter your body weight, choose an activity, select the intensity or speed that best matches your workout, and enter how long you exercised.

About This Calorie Burn Calculator

A calorie burn calculator estimates the amount of energy associated with a particular physical activity. It can be useful for comparing activities, understanding how duration and body weight affect energy expenditure, and keeping a general record of exercise.

This calculator uses the MET (Metabolic Equivalent of Task) approach. A MET value describes the energy cost of an activity relative to resting. The selected activity and intensity determine the MET value used in the calculation.

Because this is an estimate rather than a laboratory measurement, the result should be treated as an approximate guide. Two people performing the same activity for the same amount of time can have different actual energy expenditure.

How to Use the Calorie Burn Calculator

1. Enter your weight. Use your current body weight and select kilograms or pounds.
2. Choose an activity. Select walking, running, cycling, swimming, weight training, yoga, or aerobic exercise.
3. Select speed or intensity. Choose the option that most closely represents the activity you performed.
4. Enter exercise duration. You can enter the duration in minutes or hours.
5. Click Calculate Calories. The calculator converts the inputs and applies the MET-based equation.
6. Review the result. The result includes total estimated calories, active calories, calories per hour, MET value, and a step-by-step calculation.

Calorie Burn Formula

The standard equation used by this calculator is:

For users entering pounds, the calculator first converts pounds to kilograms:

For users entering hours, the calculator converts time to minutes:

The equation is a commonly used MET-based method for estimating the energy cost of physical activity. The 2024 Adult Compendium of Physical Activities defines one MET as 1 kcal/kg/hour and approximately 3.5 mL/kg/min of oxygen uptake.

What Is a MET?

MET stands for metabolic equivalent of task. It is a standardized measure used to describe the energy cost of physical activities relative to resting.

The 2024 Adult Compendium provides MET values for hundreds of activities across categories such as walking, running, bicycling, conditioning exercise, home activities, occupation, sports, water activities, and more.

Why MET values matter

A higher MET generally represents a higher energy cost for the same body weight and duration. For example, quiet sitting is listed at 1.0 MET in the Compendium, while many forms of running and vigorous exercise have substantially higher MET values.

MET does not mean your exact personal calorie rate

A MET value is a standardized estimate, not a measurement of your personal metabolism. Exercise efficiency, fitness, body composition, speed, technique, environment, and other factors can affect actual energy expenditure. The Compendium is designed to standardize physical activity energy-cost estimates rather than provide a precise individual measurement.

Calories Burned by Common Activities

The table below shows representative MET values used in this calculator. The exact energy cost depends on the specific activity and intensity.

The calculator’s activity choices are simplified representations of activity categories. MET values can vary substantially within the same broad activity depending on speed, effort, terrain, technique, and the specific activity performed.

Calorie Burn Example

Suppose a person weighs 70 kg and walks at 4.8 km/h for 30 minutes. The selected walking intensity in this calculator uses a MET value of 3.5.

The estimated activity energy expenditure is therefore about 129 calories. This number is an estimate based on the selected MET value; it is not a direct measurement of the person’s actual calorie expenditure.

What happens if the duration changes?

With the same body weight and MET value, increasing the duration increases the estimated energy expenditure. For example, doubling a 30-minute activity to 60 minutes doubles the calculated result because duration is directly proportional to the equation.

What happens if body weight changes?

With the same activity, MET value, and duration, the standard equation produces a higher estimated calorie expenditure for a higher body weight because body weight is directly included in the calculation.

Total Calories vs. Active Calories

This calculator displays both total activity calories and an approximate active-calorie figure.

Total activity calories

The main result uses the selected MET value in the standard equation:

Estimated active calories

The active-calorie estimate subtracts a 1-MET resting component for the same period:

This distinction is useful when comparing an exercise session with the energy your body would have used during the same amount of time at rest. It should still be treated as an estimate rather than a measurement from a metabolic test.

Why Calories Burned Differ From Person to Person

A calculator can use the same activity, duration, and body weight for two people and still fail to capture all of the factors that influence actual energy expenditure. Standardized MET values simplify a complex physiological process.

• Body composition: The proportion of muscle, fat, and other tissues can affect energy requirements.
• Fitness and movement efficiency: People can use different amounts of energy to perform the same movement.
• Actual intensity: A workout described as “moderate” may be performed at different effort levels by different people.
• Speed and terrain: Inclines, surfaces, wind, and changes in pace can alter the energy cost.
• Technique and equipment: Form, resistance, machines, bicycles, footwear, and other equipment can change workload.
• Environment: Temperature and other conditions may influence exercise demands.
• Activity selection: A broad category such as “cycling” or “weight training” contains many different possible workloads.

Calorie Burn, Exercise, and Weight Management

Physical activity increases the amount of energy your body uses. It can therefore contribute to weight management when combined with appropriate eating habits and a sustainable activity routine. The relationship between calorie intake, activity, body weight, and long-term weight change is more complex than simply adding up calories from individual workouts.

The CDC recommends that adults get at least 150 minutes of moderate-intensity aerobic activity per week, or 75 minutes of vigorous-intensity activity, or an equivalent combination. Adults are also advised to perform muscle-strengthening activities on at least two days each week.

Do not automatically “eat back” every exercise calorie

Exercise calorie estimates are not precise enough to be treated as an exact food allowance. If you are tracking calories for weight management, consider the calculator result as one piece of information alongside your overall food intake, activity pattern, body-weight trend, and personal goals.

Consistency matters more than a single workout

A single exercise session provides a snapshot. A regular activity routine can provide a more meaningful contribution to health and weight management over time. Tracking the type, duration, and frequency of activity can also help you identify sustainable habits.

How to Get More Useful Results

1. Use a recent body-weight measurement. Weight is a direct input in the MET equation.
2. Choose the closest activity description. Avoid choosing a vigorous option if your actual effort was light.
3. Separate mixed workouts. If you spent 20 minutes walking and 20 minutes running, calculate each segment separately.
4. Use actual active duration. For workouts with long rest periods, consider whether the selected activity description represents the entire recorded time.
5. Track trends rather than isolated numbers. Repeated estimates can be more useful for comparing your own activity patterns.
6. Use other measures of progress. Fitness, strength, endurance, walking distance, exercise consistency, and how you feel can all provide useful information beyond calories.

Calorie Burn for Walking

Walking is one of the most accessible forms of physical activity, but calorie expenditure can change substantially with pace and conditions. In the Compendium, walking activities are assigned different MET values according to speed and circumstances. turn1search0

For a more useful walking estimate, select the speed that most closely matches your actual pace. If you alternate between slow and brisk walking, consider calculating each period separately.

Calorie Burn for Running

Running calorie estimates are strongly influenced by speed and duration. The 2024 Adult Compendium contains multiple running categories with different MET values, from jogging and slower running through faster running.

Use the running option that most closely matches your pace. If your workout includes warm-up walking, intervals, and running, calculate those portions separately for a more representative estimate.

Calorie Burn for Cycling

Cycling can range from easy recreational riding to vigorous cycling. The Compendium includes separate MET values for different cycling speeds and effort levels.

For indoor cycling, choose an intensity that best matches your actual effort. For outdoor cycling, hills, wind, surface, and speed can all influence the workload, so a single generic cycling value is only an approximation.

Calorie Burn for Swimming and Strength Training

Swimming energy expenditure varies with stroke, pace, skill, and effort. Strength training also varies considerably depending on exercise selection, load, rest periods, repetitions, and whether the session is light, moderate, or vigorous.

For both activities, selecting an intensity that realistically matches your session is important. If a workout contains long periods of rest or multiple different activities, segmenting the session can improve the usefulness of the estimate.

Is a Calorie Burn Calculator Accurate?

It is useful for estimation, but it is not exact. A MET-based calculator uses standardized activity energy-cost values rather than measuring your oxygen consumption, heart rate response, movement, or individual metabolic rate during the workout.

The 2024 Adult Compendium is intended to provide standardized estimates of the energy cost of physical activities. It contains a large catalog of activities and MET values, but standardized values cannot represent every individual’s exact energy expenditure.

When greater precision matters

If you need individualized exercise or nutrition guidance because of a medical condition, pregnancy, an eating disorder, a significant weight-management concern, or another health issue, a qualified healthcare professional or registered dietitian can provide advice based on your circumstances.

Calorie Burn Calculator vs. Fitness Trackers

Fitness trackers and smartwatches may estimate calories using combinations of movement, heart rate, body measurements, and proprietary algorithms. A MET calculator uses a more transparent equation and standardized activity values.

Neither approach should automatically be assumed to provide an exact calorie count. Different devices and calculators can produce different results because they use different assumptions, measurements, and algorithms.

For personal tracking, consistency can be more useful than repeatedly switching between methods. If you use this calculator to compare workouts, use the same method and record your activity in a consistent way.

Frequently Asked Questions

Sources and Methodology

This calculator uses a standard MET-based energy-expenditure equation and activity categories informed by the 2024 Adult Compendium of Physical Activities. The Compendium is a standardized reference for classifying physical activities and assigning MET values.

• 2024 Adult Compendium of Physical Activities
• Compendium of Physical Activities – Official Website
• CDC – Adult Physical Activity Guidelines
• NIDDK – Eating and Physical Activity to Lose or Maintain Weight

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Disclaimer: This calculator provides an educational estimate of physical-activity energy expenditure. It is not a medical device, diagnostic tool, or substitute for professional medical, nutrition, or fitness advice. Actual calorie expenditure can differ substantially from the estimate. If you have a medical condition, are pregnant or breastfeeding, are under 18, or have specific dietary or exercise restrictions, seek advice from an appropriately qualified healthcare professional.