Calories Burned by Activity: MET Formula & Top Activities Ranked (2026)

What Is a MET Value?

MET stands for Metabolic Equivalent of Task. It measures how much energy any physical activity requires relative to sitting quietly at rest. By definition, sitting has a MET of 1.0. An activity rated at MET 4.0 burns four times more calories than sitting.

The Ainsworth Compendium of Physical Activities — first published in Medicine & Science in Sports & Exercisein 1993 and last updated in 2011 — catalogues MET values for over 800 activities. It's the foundational reference used by researchers, fitness professionals, and calculator developers worldwide.

Sleeping clocks in at just 0.95 MET. A brisk walk hits 3.5. Sprint intervals can reach MET 14. That range tells you almost everything you need to know about why activity choice matters so much for calorie expenditure.

MET Values for Common Activities

Source: Ainsworth BE et al., “2011 Compendium of Physical Activities,” Medicine & Science in Sports & Exercise, 2011.

The MET Calorie Formula

The standard formula used in exercise calorie calculators:

Calories = MET × weight (kg) × duration (hours)

To convert pounds to kilograms, divide by 2.2. A 155 lb person weighs approximately 70.5 kg.

Example: 155 lb person (70.5 kg) running at 6 mph (MET 9.8) for 45 minutes (0.75 hours):
Calories = 9.8 × 70.5 × 0.75 = 518 kcal

This is the grosscalorie figure — total energy used including what you'd have burned at rest. Net calories subtract your resting metabolic rate and will be slightly lower, but most apps and trackers report gross.

Don't want to do the math? Our Calories Burned Calculator handles every step.

Why Body Weight Matters

Body weight is built directly into the MET formula because moving more mass requires more energy. It's not complicated — a heavier person pushes harder against gravity and air resistance on every step, stroke, and pedal.

The American Council on Exercise (ACE) notes that a 185 lb person burns roughly 40% more caloriesthan a 130 lb person during the same workout at the same intensity. That difference compounds over time. Someone losing 30 lbs will find the same workout burns noticeably fewer calories than it did at their starting weight — one reason plateaus happen even without changing the routine.

The flip side: heavier individuals have a significant built-in calorie-burning advantage early in a weight loss journey. A 250 lb person walking 30 minutes burns substantially more than a 150 lb person doing the same walk.

Top 10 Activities Ranked by Calories Burned Per Hour

Estimates below use MET values from the Ainsworth Compendium for a 155 lb (70 kg) person. Figures are rounded to the nearest calorie.

Steady-state cardio at moderate intensity (brisk walk, casual bike ride) falls between 250–420 calories per hour for a 155 lb person — useful for health and sustainability but well below high-intensity options for raw calorie burn.

The Afterburn Effect: EPOC

Exercise doesn't stop burning calories when you step off the treadmill. EPOC — Excess Post-exercise Oxygen Consumption — is the elevated oxygen use and calorie burn that continues as your body recovers, repairs muscle tissue, restores glycogen, and returns hormone levels to baseline.

A review in the Journal of Sports Sciences found that high-intensity exercise produces EPOC lasting up to 24 hours post-workout, adding roughly 6–15% to total session energy expenditure. Some studies put the post-workout bonus as high as 200 extra calories for a very intense session.

Low-intensity steady-state cardio produces minimal EPOC by comparison. This is a key reason HIIT and heavy compound lifting (squats, deadlifts) are often recommended over steady jogging for fat loss — the total calorie cost extends well beyond the session itself.

Activities That Maximize EPOC

• HIIT workouts — near-maximal effort intervals with short recovery periods
• Heavy compound weightlifting — squats, deadlifts, bench press, rows
• Sprint intervals — all-out efforts of 10–30 seconds
• Circuit training — minimal rest between exercises keeps intensity elevated

The American College of Sports Medicine (ACSM) recommends adults get at least 150 minutes of moderate-intensity or 75 minutes of vigorous-intensityaerobic activity per week, plus muscle-strengthening on 2+ days per week. The CDC Physical Activity Guidelines for Americans (2018) echo the same targets — and note that any movement is better than none.

Why Fitness Trackers Get It Wrong

A 2017 study in JAMA Internal Medicine(Shcherbina A et al., Stanford University) tested seven popular wrist-worn fitness trackers — Apple Watch, Fitbit Surge, Basis Peak, Microsoft Band, Mio Alpha, PulseOn, and Samsung Gear S2 — against indirect calorimetry, the gold standard for measuring calorie burn.

The results were stark. The most accurate device was still off by 27%. The least accurate overestimated calorie expenditure by 93%. Not a single device met the researchers' threshold for clinical accuracy.

The root cause: trackers use wrist movement and heart rate as proxies for energy expenditure. But heart rate is confounded by caffeine, stress, heat, and hydration status — none of which change actual calorie burn. And wrist accelerometry can't capture the mechanical complexity of cycling, weightlifting, or elliptical training.

The practical takeaway: use tracker readouts as motivational tools and rough trend indicators. Don't eat back tracker-reported calories one-for-one — you'll almost certainly over-eat. MET-based calculations, while imperfect, apply a more consistent and validated methodology.

Calorie Deficit Math: Losing Weight Through Exercise

One pound of body fat contains approximately 3,500 calories. Creating a sustained daily deficit of 500 calories produces roughly 1 lb of loss per week. That's the math behind the most widely cited weight loss target.

The CDC recommends a safe loss rate of 1–2 lbs per weekfor most adults. Larger deficits risk muscle loss, nutrient deficiency, and metabolic adaptation. For most people, a combination of moderate exercise (burning 200–400 cal/day) and modest dietary reduction is more sustainable than extreme caloric restriction alone.

To understand how your resting calorie needs factor in, see our guide on Basal Metabolic Rate (BMR) or how to calculate your TDEE.

Heart Rate and Calorie Estimation

Heart rate offers an alternative way to estimate calorie burn, particularly for activities where MET values are less precise. The Karvonen formula is the most commonly used method:

Calories/min = (Age × 0.2017 + Weight (kg) × 0.09036 + HR × 0.6309 − 55.0969) ÷ 4.184

This formula (Keytel et al., 2005) uses gender-specific coefficients and accounts for age and body weight. It's more individualized than MET alone but still subject to the same limitations as heart rate measurement — dehydration, caffeine, and temperature all shift heart rate independent of actual work output.

Heart rate zones — typically defined as percentages of maximum heart rate — offer a useful training intensity guide. The heart rate zones guide covers how to calculate your zones and which burns the most fat per session.

Related Guides and Tools

• What Is BMR? — how your body burns calories at rest
• How to Calculate TDEE and Macros — total daily energy for any fitness goal
• Heart Rate Zones Explained — train smarter with zone-based workouts
• Body Fat Percentage Guide — why composition matters more than scale weight

Frequently Asked Questions

How do you calculate calories burned during exercise?

Use the MET formula: Calories = MET × weight in kg × duration in hours. Every activity has a MET value from the Ainsworth Compendium. A 155 lb (70 kg) person cycling moderately (MET 8.0) for 45 minutes burns roughly 420 calories. Divide pounds by 2.2 to convert to kilograms.

What is a MET value and what does it mean?

MET stands for Metabolic Equivalent of Task. It measures how much energy an activity requires compared to sitting quietly at rest, which equals 1 MET. An activity with MET 4.0 burns four times as many calories as resting. The Ainsworth Compendium lists MET values for over 800 activities and is the global research standard.

Which activity burns the most calories per hour?

Running at high speed tops the list. A 155 lb person running at 8 mph burns approximately 831 calories per hour. Vigorous rowing, jump rope, and HIIT all exceed 700 calories per hour. The exact amount depends on body weight — heavier people burn more calories doing the same activity.

Why do fitness trackers overestimate calories burned?

A 2017 Stanford study published in JAMA Internal Medicine found popular wrist-worn trackers overestimate energy expenditure by 27% to 93%. Trackers infer calorie burn from wrist movement and heart rate, which cannot account for individual fitness efficiency, body composition, or activity type accurately.

What is the afterburn effect (EPOC)?

EPOC (Excess Post-exercise Oxygen Consumption) is the elevated calorie burn that continues after intense exercise ends. High-intensity training can add 6–15% to total exercise energy expenditure and keep metabolism elevated for up to 24 hours. Low-intensity cardio produces minimal EPOC by comparison.

How does body weight affect calories burned?

Heavier people burn significantly more calories doing identical activities because moving more mass requires more energy. A 185 lb person burns roughly 40% more calories than a 130 lb person running at the same pace. This is why the MET formula always multiplies by body weight in kilograms.

How many calories do I need to burn to lose 1 pound?

One pound of body fat contains approximately 3,500 calories. Creating a daily calorie deficit of 500 calories — through exercise, reduced food intake, or both — produces roughly 1 lb of weight loss per week. The CDC recommends a safe loss rate of 1–2 lbs per week for sustainable results.