What is a METs Calculator and how does it work?

A METs Calculator estimates the metabolic equivalent of task (MET) value for a given physical activity, which represents the energy cost of that activity relative to resting metabolic rate. It typically uses inputs like the type of exercise, duration, and sometimes body weight to compute the MET level, which can then be used to estimate calories burned or cardiovascular intensity.

How do I interpret the MET value that the calculator provides?

A MET value of 1 equals resting energy expenditure, while values above 1 indicate higher intensity; for example, brisk walking is about 3-4 METs, and running can be 8-12 METs. You can use these numbers to gauge whether an activity falls into light, moderate, or vigorous categories, with moderate intensity generally being 3-6 METs and vigorous being above 6 METs.

Can I use the METs Calculator to track my fitness progress over time?

Yes, by regularly calculating the MET values for your workouts and comparing them with your heart rate or perceived exertion, you can see if you’re able to sustain higher intensities over the same duration. This helps you objectively measure improvements in cardiorespiratory fitness, as your ability to perform the same activity at a lower MET cost (or a higher MET at the same effort) indicates better conditioning.

Are there limitations or errors I should be aware of when using a METs Calculator?

Yes, because MET values are based on population averages, they may over- or under-estimate energy expenditure for individuals, especially if you’re very fit, overweight, or have a different biomechanical efficiency for the activity. Additionally, the calculator assumes a standard resting metabolism and does not account for factors like age, gender, or environmental conditions (e.g., heat, incline), so it should be used as an estimate rather than a precise medical measurement.

METs Calculator

Last updated: 2026-09-09

METs Calculator — Calculate calories burned by MET value.

Inputs

Result

Enter values and press Calculate

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Common Examples — Click to Fill

	Weight	METs	Minutes
Child	35	2	30
Teen	52	4	30
Adult (F)	70	5	30
Adult (M)	105	8	30
Elderly	140	10	30

TL;DR: To calculate calories burned with the METs Calculator, multiply the MET value of your activity by 3.5, then by your weight in kilograms, then by the duration in minutes, and finally divide the total by 200 (Calories = METs × 3.5 × weight × minutes ÷ 200).

What Is the METs Calculator?

The METs Calculator is a practical tool designed to estimate the number of calories you burn during any physical activity. It accomplishes this by using the Metabolic Equivalent of Task (MET), a physiological standard that measures the energy cost of a specific activity relative to your resting metabolic rate. One MET is defined as the energy you expend while sitting quietly or resting, which equates to roughly 1 kcal per kilogram of body weight per hour. The calculator translates this relative intensity into an absolute calorie figure tailored to your specific body weight and the time you spend moving.

This calculator is invaluable for anyone tracking daily energy expenditure, from fitness enthusiasts aiming to manage their weight to athletes looking to fine-tune their training nutrition. Because the calculation is standardized, it allows you to compare the energy cost of vastly different activities—from walking the dog to high-intensity interval training—on a single, objective scale. By entering your weight, the MET value of your chosen activity, and the duration, you can obtain a reliable estimate that helps you balance the calories you consume with the calories you burn.

Understanding your energy output is a cornerstone of effective health management. Whether you are creating a calorie deficit for weight loss, maintaining your current weight, or ensuring you eat enough to fuel performance, the METs Calculator provides a data-driven foundation. Instead of relying on guesswork or generic online estimates, you can use the scientifically-backed MET system to make informed decisions about your activity and dietary intake.

How to Use the Calculator

Using the METs Calculator is straightforward and requires just three pieces of information. Follow this step-by-step guide to get your result:

Enter your weight: Input your current body weight in kilograms (kg) into the designated weight field. Ensure you are using kilograms, as this is required for the formula to work correctly (1 kg = 2.2 lbs).
Select the MET value of your activity: Choose the MET value that corresponds to the exercise or task you performed. The scale starts at 1 MET (which represents rest or sitting still) and goes up to 5 METs (which represents brisk walking). If your activity is more intense, refer to a standard compendium of physical activities to find the correct MET value (e.g., jogging is roughly 7 METs, and running at 6 mph is around 9.8 METs).
Enter the duration: Input the total time you spent performing the activity in minutes. For example, if you walked for 30 minutes, enter '30'.
Calculate: Press the calculate button. The calculator will instantly apply the formula and display the total estimated calories burned during your session.

Formula and Calculation Method

The calculator uses a universally accepted formula established by exercise physiologists to convert MET values into caloric expenditure. The formula is:

Calories burned = METs × 3.5 × weight (kg) × duration (minutes) ÷ 200

This formula works because one MET is roughly equivalent to the oxygen consumption of 3.5 milliliters per kilogram of body weight per minute. This oxygen consumption translates directly into energy expenditure. Dividing by 200 is a standard conversion factor that turns this metabolic calculation into kilocalories (the 'calories' we see on food labels).

Let’s walk through a concrete example to illustrate the method. Suppose you weigh 75 kilograms and you engage in a brisk walk, which has a MET value of 5. You walk for 30 minutes. The calculation would be as follows:

Calories = 5 (METs) × 3.5 × 75 (kg) × 30 (minutes) ÷ 200
Calories = 17.5 × 75 × 30 ÷ 200
Calories = 39,375 ÷ 200
Calories = 196.875

Therefore, a 75 kg person walking briskly for 30 minutes would burn approximately 197 calories.

Practical Examples

To demonstrate the versatility of the METs Calculator, here are three realistic scenarios showing how different inputs affect the final calorie count.

Scenario	Weight (kg)	MET Value	Duration (min)	Calories Burned
Sedentary Desk Work	60	1.5	120	189
Moderate Cycling	80	6.0	45	378
Vigorous Running	70	9.8	30	514.5

In the first example, a light activity like sitting at a desk for two hours accumulates very few calories. The second example shows that a moderate workout like cycling at a steady pace for 45 minutes yields a significant energy expenditure. The final example highlights how high-intensity activities with higher MET values produce a substantial calorie burn in a shorter period of time.

Tips for Accurate Results

To get the most out of your calculations, it is essential to use accurate inputs. Here are some specific tips and common pitfalls to avoid.

Choose the correct MET value: One of the most common mistakes is using an incorrect MET value. Refer to the comprehensive Compendium of Physical Activities (originally compiled by Dr. Barbara Ainsworth) to find the precise MET for your activity. Be specific—the difference between 'walking 2.5 mph' and 'walking 3.5 mph' changes the MET value significantly.
Consider the intensity: MET values are not one-size-fits-all. Walking is not the same as running, and even running at different speeds has different MET values. Ensure the MET you select closely matches the actual intensity of your session. Using a general 'walking' MET when you were actually jogging will under-report your energy expenditure.
Do not double-count baseline calories: The formula already accounts for your basal metabolic rate. Your Total Daily Energy Expenditure (TDEE) includes the calories you burn at rest. If you are tracking your daily intake against your TDEE for weight loss, do not add these exercise calories on top of your calculated deficit unless you are specifically accounting for an 'active' TDEE. The METs calculation gives you the total burn during the activity, including the resting portion.
Weigh yourself accurately: The calculation is directly proportional to your weight. Ensure you are using your current weight in kilograms. If you weigh yourself in pounds, be sure to divide your weight by 2.205 to convert it to kilograms before entering the value.
Track time precisely: The duration should be the actual time spent actively moving, not including rest breaks or setup time. A thirty-minute gym session might only include 20 minutes of active exercise.

Frequently Asked Questions

Q: Is the METs Calculator accurate for all types of exercise?

The METs Calculator provides a strong estimate that is accurate for most aerobic and steady-state activities. Its precision relies heavily on the accuracy of the MET value you select. For activities like resistance training, the MET value can vary wildly depending on rest periods and exertion level, making the calculation less precise. For such activities, it is often better to use a heart-rate-based estimation or a dedicated strength-training formula. However, for walking, running, swimming, and cycling, the MET calculation is a highly reliable benchmark.

Q: What is the difference between 1 MET and 5 METs in practical terms?

One MET is your resting metabolic rate—the energy you use sitting still or watching TV. This is the baseline for all calculations. Five METs represents an activity that requires five times more energy than resting, such as a brisk walk at 3.5-4 mph or heavy cleaning. According to public health guidelines, activities are categorized by intensity: moderate activities are typically 3 to 6 METs, while vigorous activities are anything above 6 METs. Therefore, a 5 MET activity is on the higher end of the moderate-intensity spectrum, significantly elevating your heart rate and breathing.

Q: How can I calculate METs for my favorite activity if it is not listed?

You can find the MET value for virtually any activity by consulting the official Compendium of Physical Activities, which is maintained by Arizona State University and updated regularly. This compendium lists MET values for a vast range of activities, from specific sports to household chores. To use it, you simply find the code that matches your specific activity and intensity (e.g., 'bicycling, stationary, moderate effort' has a different MET than 'bicycling, stationary, vigorous effort'). You can also use a wearable fitness tracker that estimates METs based on your heart rate and movement, but the compendium is the gold standard for research-based values.