Met Activity Lookup Calculator
Our calories burned calculator computes met activity lookup instantly. Get accurate stats with historical comparisons and benchmarks.
Formula
Calories = MET * Weight(kg) * Duration(hours)
Where MET is the Metabolic Equivalent of Task for the selected activity, Weight is in kilograms, and Duration is in hours. One MET equals approximately 1 calorie per kilogram of body weight per hour, representing the resting metabolic rate. Higher MET values indicate more intense activities that burn proportionally more energy.
Worked Examples
Example 1: Moderate Running Calorie Calculation
Problem: An 80 kg person runs at 6 mph (10 min/mile pace, MET 9.8) for 45 minutes. Calculate calories burned.
Solution: Calories = MET * Weight(kg) * Duration(hours)\nCalories = 9.8 * 80 * (45/60)\nCalories = 9.8 * 80 * 0.75\nCalories = 588\nCalories per minute = 588 / 45 = 13.1
Result: Total calories: 588 | Rate: 13.1 cal/min
Example 2: Mixed Activity MET Comparison
Problem: A 65 kg person wants to compare 30 minutes each of yoga (MET 2.5), swimming (MET 7.0), and cycling (MET 8.0).
Solution: Yoga: 2.5 * 65 * 0.5 = 81 calories\nSwimming: 7.0 * 65 * 0.5 = 228 calories\nCycling: 8.0 * 65 * 0.5 = 260 calories\nTotal for all three (90 min): 569 calories\nAverage MET across session: 569 / (65 * 1.5) = 5.8
Result: Yoga: 81 cal | Swimming: 228 cal | Cycling: 260 cal | Total: 569 cal
Frequently Asked Questions
What is a MET value and what does it represent?
MET stands for Metabolic Equivalent of Task and represents the energy cost of physical activity as a ratio compared to resting metabolism. One MET equals the energy expenditure at rest, approximately 3.5 milliliters of oxygen consumed per kilogram of body weight per minute, or roughly 1 calorie per kilogram of body weight per hour. An activity with a MET value of 5.0 means you are burning five times as many calories as you would at complete rest. The Compendium of Physical Activities, maintained by researchers at Arizona State University, catalogs MET values for over 800 specific activities based on laboratory measurements of oxygen consumption. This standardized system allows researchers, clinicians, and fitness professionals to compare energy costs across vastly different types of physical activity.
How are MET values determined and measured for different activities?
MET values are determined through laboratory studies using indirect calorimetry, which measures oxygen consumption and carbon dioxide production during physical activity. Participants perform the activity while wearing a metabolic mask or being enclosed in a metabolic chamber that precisely quantifies gas exchange. The measured oxygen consumption is then divided by the resting metabolic rate (3.5 mL O2/kg/min) to calculate the MET value. Multiple participants are typically tested and values are averaged to account for individual variation. The Compendium of Physical Activities, first published by Dr. Barbara Ainsworth in 1993 and regularly updated since then, compiles these laboratory measurements into a comprehensive database. Some activities have been measured extensively with large sample sizes, while others rely on smaller studies or extrapolation from similar activities.
How do you calculate calories burned from a MET value?
Calculating calories burned from a MET value uses a straightforward formula: Calories = MET * body weight in kilograms * duration in hours. For example, a 70 kg person performing an activity with a MET value of 8.0 for 45 minutes would burn: 8.0 * 70 * 0.75 = 420 calories. This formula works because one MET equals approximately 1 calorie per kilogram per hour at rest, and the MET value scales this proportionally based on activity intensity. To find net calories burned (above resting), subtract the resting metabolic cost by using MET minus 1 in the formula. Some calculators also apply a correction factor based on age and fitness level, since the standard 3.5 mL O2/kg/min resting value can vary by up to 20 percent among individuals.
Why do MET values vary for the same activity at different intensities?
MET values vary for the same activity at different intensities because energy expenditure scales with effort level, speed, resistance, and biomechanical demands. For running, each additional mile per hour of speed requires proportionally more oxygen consumption and energy production due to increased ground reaction forces, faster leg turnover, and greater wind resistance. Cycling shows similar patterns where power output increases roughly with the cube of speed due to aerodynamic drag. Swimming intensity varies with stroke technique, speed, and water conditions. Even weight lifting has different MET values depending on the load intensity, rest periods, and whether the workout emphasizes strength (heavier, fewer reps, more rest) or endurance (lighter, more reps, less rest). Understanding these intensity-dependent variations helps users select the most accurate MET value for their specific workout characteristics.
What are the categories of physical activity intensity based on MET values?
Physical activity intensity is classified into standard categories based on MET value ranges established by the American College of Sports Medicine and the World Health Organization. Sedentary activities range from 1.0 to 1.5 METs and include sleeping, sitting, and lying down. Light intensity activities span 1.6 to 2.9 METs and include slow walking, light housework, and gentle stretching. Moderate intensity activities range from 3.0 to 5.9 METs and include brisk walking, recreational cycling, and water aerobics. Vigorous intensity activities span 6.0 to 8.9 METs and include jogging, swimming laps, and competitive sports. Very vigorous activities exceed 9.0 METs and include running at fast paces, competitive rowing, and high-intensity interval training. Public health guidelines typically recommend 150 minutes per week of moderate-intensity or 75 minutes of vigorous-intensity activity.
How do MET values help in meeting physical activity guidelines?
MET values provide a quantitative framework for translating public health physical activity guidelines into practical exercise prescriptions. The WHO recommends 150 to 300 minutes of moderate-intensity (3-6 METs) or 75 to 150 minutes of vigorous-intensity (6+ METs) aerobic activity per week. Using MET values, individuals can calculate MET-minutes by multiplying the MET value of their chosen activity by the minutes performed, then compare this to the recommended threshold of 500 to 1000 MET-minutes per week. For example, 30 minutes of brisk walking (3.5 METs) five days per week yields 525 MET-minutes, meeting the minimum recommendation. This flexibility allows people to mix different activities and intensities while ensuring they achieve sufficient total metabolic stimulus for health benefits including reduced cardiovascular disease risk, improved mental health, and better weight management.