Walking (brisk, 6.5 km/h) (MET: 5) for 30 min
Total Calories Burned
175kcal
Scenario
Calories Burned Walking — Calculator by Weight & Speed
Calculate calories burned walking by weight and speed using MET values. Includes calorie burn tables for various walking speeds, the 10000-step calorie estimate, and the calorie formula.
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
Walking MET Values and the Calorie Formula
The standard calorie burn formula for walking uses MET (Metabolic Equivalent of Task) values: calories burned = MET × weight in kg × hours of activity. Walking at 3.0 mph (4.8 km/h) uses 3.3 METs, 3.5 mph (5.6 km/h) uses 3.8 METs, and 4.0 mph (6.4 km/h) uses 4.3 METs. A 70 kg person walking at 3.5 mph for 1 hour burns 3.8 × 70 × 1 = 266 kcal. At 4.0 mph for 1 hour, the same person burns 4.3 × 70 × 1 = 301 kcal. Increasing walking speed from 3.0 to 4.0 mph boosts calorie burn by roughly 30% per hour, making brisk walking a significantly more efficient calorie expenditure than slow strolling. Use the HealthCalc Calories Burned Walking Calculator to input your exact speed, weight, and duration for a precise estimate.
Calories Burned Walking at Different Speeds and Weights
- 50 kg person at 3.5 mph (30 min): 3.8 × 50 × 0.5 = 95 kcal. A light-calorie-expenditure activity suitable for beginners.
- 70 kg person at 3.5 mph (60 min): 3.8 × 70 × 1.0 = 266 kcal. Comparable to a moderate-intensity weight training session.
- 70 kg person at 4.0 mph (60 min): 4.3 × 70 × 1.0 = 301 kcal. A more effective calorie burn achieved simply by walking 0.5 mph faster.
- 90 kg person at 4.0 mph (60 min): 4.3 × 90 × 1.0 = 387 kcal. Heavier individuals burn more calories at the same speed due to greater energy expenditure per step.
- 90 kg person at 4.5 mph (power walking, 60 min): 5.0 × 90 × 1.0 = 450 kcal. Approaching the calorie burn of a slow jog, with far less joint impact.
The 10000-Step Calorie Estimate
The popular 10,000-step daily goal originated from a 1965 Japanese pedometer marketing campaign, but it aligns reasonably well with recommended physical activity levels. A 10,000-step day typically covers 7-8 km (4-5 miles) depending on stride length. At 3.5 mph, 10,000 steps takes approximately 90 minutes and burns roughly 350-400 kcal for a 70 kg person. Heavier individuals burn proportionally more: a 90 kg person walking 10,000 steps burns approximately 450-500 kcal, and a 50 kg person burns approximately 250-285 kcal. Walking 10,000 steps daily for a year adds roughly 126,000-180,000 kcal of weekly energy expenditure, which alone can support 16-23 kg of fat loss over a year if diet remains unchanged. In practice, diet adjustments also play a role, making 10,000 steps a useful but incomplete weight management strategy. Use the HealthCalc Steps to Calories Calculator for a personalized estimate based on your height and weight.
Tips to Maximize Walking Calorie Burn
Adding an incline of just 3-5% to your walking route can increase calorie burn by 25-35% without requiring any increase in speed. Walking on trails with uneven terrain provides a similar metabolic boost to a treadmill incline. Adding hand weights of 1-2 kg or using a weighted vest increases calorie expenditure by 10-15%, though heavier weights can increase injury risk at the shoulder and knee. Walking faster is the simplest lever: increasing from 3.5 mph to 4.5 mph raises calorie burn from 3.8 METs to approximately 5.0 METs, a 32% increase in energy expenditure per minute. Consistency matters most: walking 30 minutes daily at 4.0 mph burns 1,500+ kcal per week, producing a meaningful calorie deficit when combined with a balanced diet. The HealthCalc Calories Burned Calculator helps you track weekly totals across varied walking sessions to quantify your total walking-based calorie expenditure.
FAQ
Frequently Asked Questions
A 70 kg person walking 1 mile at 3.5 mph burns approximately 70-80 kcal. Use the formula calories = MET × weight × hours, with 3.8 METs for a moderate walking pace.
A 70 kg person walking 10,000 steps (roughly 7-8 km or 90 minutes at 3.5 mph) burns approximately 350-400 kcal. Heavier individuals burn proportionally more.
Yes. Walking at 4.0 mph burns about 30% more calories per hour than walking at 3.0 mph. Power walking at 4.5 mph burns roughly 32% more than moderate 3.5 mph walking.
Yes. A 3-5% incline increases walking calorie expenditure by 25-35%. Walking on uneven trails provides a similar metabolic boost without needing a treadmill.
Yes, if it creates a calorie deficit. Walking 60 minutes daily at 4 mph burns approximately 300 kcal per session, or 2,100 kcal per week. Combined with a balanced diet, this supports 0.2-0.3 kg of fat loss per week from walking alone.
Keep going
Related calculators & guides
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Steps to Calories Calculator
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BMR Calculator
Calculate your basal metabolic rate to understand how walking calorie burn fits into your total daily energy balance.