Walking (brisk, 6.5 km/h) (MET: 5) for 30 min
Total Calories Burned
175kcal
Scenario
Calories Burned by Activity — Exercise Ranked
Compare calorie burn across exercises ranked by MET values. Includes per-hour calorie tables by weight, the top calorie-burning activities, and guidance on choosing the right workout.
Interactive Calculator
Your Details
kg
minutes
Calories Burned
Formula: MET × Weight(kg) × Duration(hours)
= 5 × 70 kg × 0.50 h
= 175 kcal
Activity Comparison (30 min)
Intensity Level
Very Light
Light
Moderate
Vigorous
Very Vigorous
Activity MET Reference
MET values from the Compendium of Physical Activities. One MET = 1 kcal/kg/hour at rest.
Walking (brisk, 6.5 km/h) has a MET value of 5, meaning it burns 5× the energy of resting.
The formula
The formula
How Calories Burned Are Calculated
Physical activity energy expenditure is most commonly estimated using the MET (Metabolic Equivalent of Task) method. One MET is defined as the rate of energy expenditure while sitting quietly at rest — approximately 1 kcal per kilogram of body weight per hour. Every activity in the Compendium of Physical Activities is assigned a MET value that expresses how many times more energy it requires compared with resting. For example, brisk walking has a MET value of about 4.3, meaning it burns about 4.3 times the energy of resting.
The MET approach is the standard framework used by clinical exercise physiologists, fitness trackers, and most research studies because it is simple, does not require any laboratory equipment, and produces estimates that are accurate enough for general guidance at the group level. It is important to remember that the result is an estimate, not a precise measurement of your individual metabolism.
The MET Formula
Calories = MET × Weight(kg) × Duration(hours)
MET = metabolic equivalent value of the activity (from the Compendium)
Weight = your body weight in kilograms
Duration = time spent doing the activity in hours
Because heavier bodies require more energy to move, the same activity burns more calories for a heavier person — the formula captures this by multiplying by body weight. MET values range from 0.9 (sleeping) to 18 or more (running at very high speed), and the Compendium lists hundreds of coded activities with their corresponding values.
Formula Source
This calculator uses **MET values from the Compendium of Physical Activities** by **Ainsworth BE, Haskell WL, Herrmann SD, et al., Medicine & Science in Sports & Exercise** published in **2011**.
Reference URL: https://pubmed.ncbi.nlm.nih.gov/21681120/
Last Verified: 2026-07-30
Worked Example
Suppose you weigh 70 kg and go for a 45-minute (0.75 hour) run at 10 km/h, an activity with a MET value of roughly 9.8. Calories = 9.8 × 70 × 0.75 = 514 kcal. If instead you walked at a leisurely 2.5 km/h (MET ≈ 3.0) for the same duration: 3.0 × 70 × 0.75 = 158 kcal. Notice that the same body weight and duration produce very different results — the MET value of the activity is the single largest driver of total calorie burn.
FAQ-Style Explanations
Is a higher MET always better? Higher MET values mean more calories per minute, but they also mean more fatigue and a higher injury risk if you are not conditioned for that intensity. Sustainable exercise you can do consistently usually produces more total weekly calorie burn than sporadic all-out sessions.
Why do fitness watches disagree with this calculator? Watches estimate a personal MET value by combining your heart rate, pace, and personal profile, and they tend to run ±20–30 percent away from formal estimates. Neither source is exact — treat both as a directional guide for planning rather than a precise bill of calories.
Does the afterburn (EPOC) inflate my burn? Intense exercise does elevate post-exercise oxygen consumption, but the additional calories are modest relative to the session itself — typically 6 to 15 percent extra at the most, not the large numbers some marketing claims suggest.
Known Limitations
- MET values are population averages. Individual results vary by fitness level, body composition, terrain, and exercise efficiency — typically within ±20 percent.
- The estimate does not account for age, sex-specific metabolic differences beyond weight, or the intensity drift within a session (a run that starts easy and finishes hard is approximated by a single MET value).
- For weight-loss planning, exercise calories should be treated as an upper-bound estimate — many people compensate unconsciously by moving less or eating more after exercise.
Scenario guide
Scenario guide
MET Values Ranked by Calorie Burn
- Sprinting (12-13 METs): The highest calorie burn of any common activity. A 70 kg person sprinting burns 13 × 70 × 1 = 910 kcal per hour. Sustainability is limited to short intervals of 30 seconds to 5 minutes.
- Running (8-12 METs): Jogging at 6 mph (10 km/h) uses 9.8 METs; running at 7 mph (11.3 km/h) uses 11.0 METs. A 70 kg runner at 7 mph burns roughly 770 kcal per hour — though sustaining this pace for a full hour requires significant endurance training.
- Cycling (7-12 METs): Recreational cycling at 12-14 mph uses 7.5-8.0 METs; vigorous cycling at 17-19 mph uses 10-12 METs. Highly scalable and lower-impact than running.
- Swimming (6-10 METs): Leisurely swimming uses 6 METs; vigorous lap swimming (freestyle) uses 9-10 METs. A 70 kg person swimming laps vigorously burns approximately 630-700 kcal per hour.
- HIIT / CrossFit (8-10 METs): High-intensity interval training sessions alternate short bursts of near-maximal effort with brief recovery. Burns 560-700 kcal per hour and produces a strong afterburn effect (EPOC).
- Weight training (3-6 METs): General weight training uses 3.3 METs; vigorous resistance training uses 5-6 METs. A 70 kg person doing vigorous weight training burns 350-420 kcal per hour and builds muscle that increases resting metabolism.
Per-Hour Calorie Burn Table by Body Weight
The following table shows estimated calories burned per hour for vigorous-intensity versions of common activities at three body weights. These values use the calorie formula (MET × weight in kg × hours) and represent the mid-point MET value for each activity category. Use the HealthCalc Calories Burned Calculator to input your exact activity type, intensity, and duration for a personalized estimate.
- 50 kg person: Running 8 MET = 400 kcal/hr | HIIT 9 MET = 450 kcal/hr | Swimming 7 MET = 350 kcal/hr | Cycling 8 MET = 400 kcal/hr | Weight training 5 MET = 250 kcal/hr
- 70 kg person: Running 8 MET = 560 kcal/hr | HIIT 9 MET = 630 kcal/hr | Swimming 7 MET = 490 kcal/hr | Cycling 8 MET = 560 kcal/hr | Weight training 5 MET = 350 kcal/hr
- 90 kg person: Running 8 MET = 720 kcal/hr | HIIT 9 MET = 810 kcal/hr | Swimming 7 MET = 630 kcal/hr | Cycling 8 MET = 720 kcal/hr | Weight training 5 MET = 450 kcal/hr
- 110 kg person: Running 8 MET = 880 kcal/hr | HIIT 9 MET = 990 kcal/hr | Swimming 7 MET = 770 kcal/hr | Cycling 8 MET = 880 kcal/hr | Weight training 5 MET = 550 kcal/hr
Best Calorie-Burning Activities
For pure calorie burn per minute, sprinting and vigorous running top the list, but sustainability and practicality matter for most people. Rowing at 12 METs is often overlooked — a full hour of vigorous rowing burns over 840 kcal for a 70 kg person and provides a complete full-body workout. Jumping rope at 10-12 METs rivals running for calorie density and requires no equipment beyond a rope. Swimming provides high calorie burn with near-zero joint impact, making it ideal for heavier individuals or those recovering from injury. Stair climbing at 9 METs delivers excellent calorie burn in a compact gym format. For most people seeking a practical calorie-burning exercise, a combination of running or cycling (for volume) and weight training (for muscle building and metabolic rate) produces the best balance of calorie expenditure and long-term health benefits. Use the HealthCalc Calories Burned Calculator to compare the calorie cost of any activity for your specific weight and time budget.
Afterburn Effect and EPOC
High-intensity exercise produces an excess post-exercise oxygen consumption (EPOC), commonly called the afterburn effect. During and after vigorous exercise, the body consumes elevated oxygen to restore ATP stores, clear lactate, and repair muscle tissue. HIIT sessions can elevate calorie expenditure by 6-15% for 12-24 hours post-workout, adding roughly 50-150 extra kcal to your daily burn beyond the exercise itself. Steady-state cardio produces a smaller afterburn of 2-5%. The practical impact of EPOC on weight loss is modest — a 20-minute HIIT session might add 50-100 kcal of post-exercise burn, but the direct calorie expenditure of the 20 minutes (150-200 kcal) is still the primary driver. Choose exercises you enjoy and can sustain consistently; the long-term calorie expenditure from regular training vastly outweighs the marginal afterburn benefit of any single workout. Use the HealthCalc Calories Burned Calculator to track total daily energy expenditure including exercise contribution.
FAQ
Frequently Asked Questions
Sprinting and vigorous running burn the most calories per minute (10-13 METs). For sustainable sessions, running (8-12 METs), rowing (10-12 METs), and vigorous cycling (10-12 METs) deliver the highest calorie burn per hour.
General weight training uses 3.3 METs (~230 kcal/hr for a 70 kg person). Vigorous resistance training uses 5-6 METs (~350-420 kcal/hr). Weight training also builds muscle that elevates resting metabolic rate over time.
Per minute, yes — HIIT uses 8-10 METs and produces a stronger afterburn effect (EPOC) of 6-15% for 12-24 hours. Per total session time, steady-state running for 45 minutes typically burns more total calories than a 20-minute HIIT session.
MET values represent multiples of resting metabolic rate. Calories burned = MET × weight in kg × hours of activity. A 70 kg person doing an 8 MET activity for 1 hour burns 8 × 70 × 1 = 560 kcal.
Leisurely swimming uses 6 METs (~420 kcal/hr for a 70 kg person). Vigorous lap swimming uses 9-10 METs (~630-700 kcal/hr). Breaststroke and butterfly burn more than freestyle due to higher drag and resistance.
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