How Many Calories Does Walking Burn?

The short answer

Walking at 3 mph, the pace most people settle into on flat ground, costs 3.5 MET. In calories that is the table below, taken straight from the calories burned calculator for a steady walk at that pace.

The one line to notice is the last column. Walking is gentle per minute, so covering a meaningful distance takes real time, and it is the duration rather than the intensity that does most of the work for you.

Where the number comes from

Walking energy cost uses the same MET system as every other activity on this site. One MET is the energy you spend sitting still, and the conversion is kilocalories per minute = MET x 3.5 x body weight in kilograms / 200. Flat walking at 3 mph is listed at 3.5 MET in the Compendium of Physical Activities.

Because the only personal input is body weight, two people walking the same route at the same pace get different totals, and the heavier walker spends more. That is not a flaw in the arithmetic; it is the arithmetic.

Walking is cheap per minute, not per mile

A common claim is that walking and running cost the same per mile. The arithmetic here says otherwise, and the reason is worth understanding. At 75 kg, walking a mile at 3 mph takes about 20 minutes at 4.6 kcal a minute, so roughly 92 kcal. Running that mile at 6 mph takes 10 minutes at 12.9 kcal a minute, roughly 129 kcal.

Walking is cheaper by the mile and much cheaper by the minute; what it is not is cheaper by the hour, because you cover less ground. If you have 30 minutes, running costs more. If you have the whole afternoon, a long walk can out-total a short run.

Steps, distance and the 10,000 step figure

Most trackers report steps, not minutes, so the practical question is what a step count is worth. Stride length is estimated at roughly 0.415 of height for men and 0.413 for women, which puts a 178 cm man at about 74 cm a step and 10,000 steps at 7.4 km - around an hour and a half of walking at an ordinary pace.

Ten thousand is a marketing number rather than a threshold from the literature, but it is a reasonable target and the mortality data supports walking more rather than less. What the table shows is that a daily habit at that level is worth real energy over a week.

Why a slower walk still counts

Walking has one advantage over harder training that the calorie arithmetic does not capture: almost everyone can do it, every day, without recovery cost. A session you repeat seven times a week beats a harder session you do twice, and the weekly totals in the table above come from consistency rather than effort.

It also sits outside your training budget. Walking does not eat into recovery, does not need a warm-up, and can be attached to something you already do. That is the same principle as non-exercise activity thermogenesis, the most variable part of daily energy expenditure.

What a weekly walking habit adds up to

At 75 kg, half an hour of walking is 138 kcal. Five of those a week is 690 kcal, about 0.09 kg of body weight at the 7,700 kcal per kilogram this site uses elsewhere. An hour a day, seven days a week, is 1,932 kcal, roughly 0.25 kg.

These are small numbers, and that is the point worth taking away. Walking is an excellent habit and a poor substitute for managing intake, because the deficit behind half a kilo a week is around 550 kcal a day - more than two extra hours of walking, every day.

Incline, hills and the treadmill

Walking uphill costs more than walking flat, and the effect is larger than most people expect, because the body is now lifting its own weight as well as moving it forward. A treadmill incline of 5% to 10% turns a comfortable walk into a hard one without asking you to move any faster.

Treadmill displays usually report gross energy, which includes what you would have burned sitting still, and they do not know your body weight unless you enter it. Treat the console as a rough guide and the calculator as the estimate you can actually check.

How to use the number

If you want a figure for a specific walk, the calories burned calculator takes any body weight, duration and activity and returns the per-minute, hourly and total cost. If you already think in steps, the steps to calories calculator converts a step count using your height and weight, which is more accurate than applying a fixed calories-per-step rule.

Use the result to justify the habit, not to budget food. A 30 minute walk is worth about 138 kcal at 75 kg, which is a modest snack, and the deficit you are trying to create is usually several times that.

Getting more walking into a normal day

The arithmetic above only matters if the walking actually happens, and the reliable way to make it happen is to attach it to something you already do rather than to find a new slot in the week. These are the changes people keep, roughly in order of how easy they are to hold.

• Take the stairs when the alternative is waiting for a lift
• Walk the last stop of a commute rather than the whole journey
• Take calls standing or walking instead of sitting
• Pair a daily walk with a fixed trigger: after lunch, or after the school run
• Use a step count as a floor rather than a target, and raise it when it stops being work

Frequently asked questions