Walking one mile burns roughly 65 to 100 calories for most people, depending primarily on body weight. A 180-pound person burns about 96 calories per mile at a moderate pace, while a 120-pound person burns closer to 64. The range widens further when you factor in walking speed, terrain, and body composition.
Calories Burned by Body Weight
Your body weight is the single biggest factor in how many calories you burn per mile. Heavier bodies require more energy to move across the same distance. Here’s what the numbers look like at a moderate walking pace (around 3.0 to 3.5 mph):
- 100 lbs: 53 calories
- 120 lbs: 64 calories
- 140 lbs: 74 calories
- 160 lbs: 85 calories
- 180 lbs: 96 calories
- 200 lbs: 106 calories
- 220 lbs: 117 calories
- 250 lbs: 133 calories
- 275 lbs: 146 calories
- 300 lbs: 160 calories
A simple rule of thumb: for every additional 20 pounds of body weight, you burn roughly 10 more calories per mile.
How Walking Speed Changes the Math
Walking faster does burn more calories per mile, but the difference is smaller than most people expect. At a brisk pace (4.0 mph, or a 15-minute mile), a 160-pound person burns about 91 calories per mile compared to 85 at a moderate pace. That’s only a 7% increase. At 180 pounds, the jump is from 96 to 102 calories.
The calorie gap grows more dramatically at very fast walking speeds. Walking at 4.0 to 4.5 mph is classified as “very brisk,” and at that intensity your muscles are working significantly harder to maintain the pace. A 120-pound person walking at 5.0 mph (essentially power walking) burns 87 calories per mile, compared to 64 at a moderate pace. That’s a 36% increase. The reason: at higher speeds, walking becomes mechanically less efficient than running, so your body actually spends more energy per step to keep you from breaking into a jog.
A leisurely stroll at 2.0 to 2.5 mph still burns calories, just fewer of them. At that pace, you’d cover a mile in about 24 minutes. The total burn is lower because your muscles don’t need to generate as much force, and your heart rate stays closer to its resting level.
Walking a Mile vs. Running a Mile
A common claim is that walking and running a mile burn the same number of calories. That’s a myth. Running one mile burns significantly more than walking the same distance. Research published in Medicine and Science in Sports found that the caloric cost of running was about 1.57 calories per kilogram per mile for men, compared to 1.08 for walking. For women, the numbers were 1.73 versus 1.15. That means running burns roughly 40 to 50% more calories per mile than walking.
The difference comes down to biomechanics. Running involves a brief airborne phase with each stride, and your muscles must absorb and generate more force on every landing and push-off. Walking keeps one foot on the ground at all times, which is far more energy-efficient.
Hills and Incline Make a Big Difference
Flat-ground calorie estimates don’t tell the whole story if your route has any hills. For every 1% increase in grade, a 150-pound person burns about 10 additional calories per mile, which works out to roughly a 12% increase per percentage point of incline. A mile walked on a 5% grade could easily burn 50 to 60% more calories than the same mile on flat ground.
This is one of the reasons treadmill incline walking has become popular. Setting the treadmill to a 10 or 12% grade transforms a walk into a serious calorie-burning workout without the joint impact of running. Uneven outdoor terrain like trails, sand, or gravel also increases energy expenditure compared to smooth pavement, though the effect is harder to quantify precisely.
Age, Sex, and Muscle Mass
Two people who weigh the same can burn different amounts of calories walking a mile. The main reasons are body composition, sex, and age. People with more muscle burn more calories during any activity because muscle tissue is more metabolically active than fat. Men typically have a higher muscle-to-fat ratio than women of the same weight and age, which gives them a slightly higher calorie burn for the same walk.
Age works against you here. As you get older, you naturally lose muscle mass, and a larger proportion of your body weight comes from fat. This gradually lowers both your resting metabolism and the calories you burn during exercise. Strength training can offset some of this decline by preserving or building muscle.
How to Estimate Your Own Burn
If you want a more personalized number, there’s a straightforward formula. Multiply 0.0175 by the activity’s intensity value, then multiply by your weight in kilograms. The intensity values for walking on flat ground are 2.8 for a slow pace (2.0 to 2.4 mph), 3.8 for a moderate pace (2.8 to 3.4 mph), and 5.5 for a very brisk pace (4.0 to 4.5 mph). These values come from the Compendium of Physical Activities, the standard reference used by exercise scientists.
For example, a 160-pound person (72.6 kg) walking at a moderate pace: 0.0175 × 3.8 × 72.6 = 4.83 calories per minute. At a moderate pace, one mile takes about 17 minutes, so the total is roughly 82 calories. That lines up closely with the chart estimates. To convert your weight to kilograms, divide your weight in pounds by 2.2.
Why Your Fitness Tracker May Be Wrong
If you rely on a smartwatch or fitness band for calorie tracking, take the number with a grain of salt. A Stanford Medicine study tested seven popular wearable devices during walking, running, and cycling. Even the most accurate device was off by an average of 27% for calorie estimates, and the least accurate was off by 93%. Heart rate measurement was far more reliable, but the algorithms that convert heart rate data into calorie estimates introduce significant error.
This doesn’t mean trackers are useless. They’re good for tracking relative trends (did you burn more this week than last week?) but not for precise calorie counting. If your tracker says you burned 95 calories on a one-mile walk, the real number could reasonably be anywhere from 70 to 120.
Steps per Mile
Many people track their walks in steps rather than miles. The number of steps in a mile depends mostly on your height. A person who is 5’4″ takes about 2,357 steps per mile while walking, whereas someone who is 6’0″ covers the same distance in roughly 2,095 steps. The often-cited “2,000 steps per mile” figure is only accurate for taller individuals walking at a brisk pace. For most people, a mile is closer to 2,100 to 2,400 steps.
If you’re using a step counter to estimate calories, keep in mind that step length changes with speed. Walking faster lengthens your stride, so you take fewer steps per mile at a brisk pace than at a stroll. This means a step-based calorie estimate can shift depending on how fast you were moving, even if the step count is the same.
Does Walking Burn Calories After You Stop?
High-intensity exercise triggers what’s called an “afterburn effect,” where your body continues burning extra calories for hours after the workout ends. Walking at a normal pace produces very little of this effect. Research consistently shows that exercise intensity is the primary driver of post-exercise calorie burn, and a one-mile walk at moderate effort simply doesn’t push your body hard enough to create a meaningful afterburn. The calorie estimates in the charts above are essentially what you get, with no significant bonus afterward. If you’re walking at a very brisk pace on a steep incline, you may see a small additional burn, but for a typical flat-ground walk, what you burn during the mile is the full picture.