Walking is the most accessible exercise there is — no kit, no gym, no skill needed. So one of the most common questions about it is simply: how many calories does walking actually burn? The honest answer is "it depends" — and this guide explains exactly what it depends on, gives realistic UK numbers, and shows how to estimate your own.
The short answer
As a rough rule, an adult of average UK weight burns somewhere between 200 and 350 calories per hour of walking, depending mostly on how much they weigh and how fast they go. A brisk 30-minute walk works out to roughly 120–180 calories for most people. Those are ballpark figures — the real number shifts with your weight, your pace, the gradient and the ground underfoot.
How it's actually calculated
Calculators — including ours — use a value called a MET (Metabolic Equivalent of Task). One MET is roughly the energy you use sitting still; an activity rated at 4 METs uses about four times that. Walking ranges from around 2.5 METs for a slow stroll to 5 METs or more for a fast, purposeful walk or walking uphill.
The standard formula is:
Calories per minute = MET × 3.5 × weight in kg ÷ 200
So a 70kg person walking briskly (about 4 METs) for 30 minutes burns roughly 4 × 3.5 × 70 ÷ 200 = 4.9 calories a minute, or about 147 calories. You don't need to do this by hand — but the formula shows why your weight and your pace are the two biggest levers.
What changes the number
- Body weight — a heavier body uses more energy to move the same distance, so it burns more calories walking.
- Pace — a brisk walk can burn 50% or more than an amble over the same time.
- Hills and inclines — walking uphill raises the effort sharply; even a gentle gradient adds up.
- Terrain — sand, grass, mud or rough ground take more effort than flat pavement.
- Time and distance — the longer you walk, the more you burn, in direct proportion.
- Carrying a load — a backpack, shopping or pushing a buggy nudges the figure up.
A rough guide by weight and pace
Here's roughly how many calories a 30-minute walk burns at different weights and paces. Treat these as estimates, not precise counts:
| Your weight | Stroll (2 mph) | Steady (3 mph) | Brisk (4 mph) |
|---|---|---|---|
| 60 kg (9.4 st) | ~80 | ~110 | ~155 |
| 75 kg (11.8 st) | ~100 | ~140 | ~195 |
| 90 kg (14.2 st) | ~120 | ~165 | ~235 |
Double these for an hour's walk. The pattern is clear: both pace and weight move the number a lot, which is exactly why a single one-size-fits-all figure is misleading.
What about 10,000 steps?
If you track steps, the obvious question is how many calories 10,000 steps burns. Very roughly, 10,000 steps is around 4–5 miles for most people and burns somewhere in the region of 300–450 calories — but it swings with all the same factors, plus your stride length. Worth knowing: the NHS doesn't actually set a 10,000-step target (that number began as a 1960s pedometer marketing slogan). Its Active 10 guidance suggests brisk 10-minute walks as a simpler, more realistic goal.
Walking versus running and other exercise
Walking burns fewer calories per minute than running, but it's far gentler on the joints, easier to keep up, and something you can do every day without needing to recover. For most people, a walk you'll actually repeat beats a run you dread. Over a week, consistent walking quietly adds up to far more than the per-minute figure suggests.
The benefits that aren't about calories
It's worth stepping back from the calorie number, because it's only part of the story. Regular walking is linked to lower blood pressure, better mood and sleep, steadier blood sugar, stronger bones, and a reduced risk of heart disease. The NHS recommends adults aim for at least 150 minutes of moderate activity a week — and brisk walking counts fully towards that. Those benefits arrive whether or not you ever count a single calorie.
How accurate are these numbers?
Treat every calories-burned figure — from a calculator, a fitness watch or a treadmill display — as a ballpark. Studies repeatedly find wearables can be off by 20–30% or more on calorie estimates. They're genuinely useful for spotting trends and comparing one of your own days to another, but not for precise calorie accounting.
Common questions
Does walking faster burn more calories?
Yes — pace is one of the biggest levers. A brisk 4 mph walk can burn over 50% more than a slow stroll over the same length of time. That said, a longer slow walk can still burn more in total than a short fast one, so distance and time matter just as much as speed.
Do you burn calories walking slowly?
Yes. Even a gentle stroll burns noticeably more than sitting still. It's less per minute than a brisk walk, but it absolutely counts — and a slow walk you enjoy and repeat is worth more than a fast one you avoid.
Is walking enough exercise on its own?
For general health, regular brisk walking can get you to the NHS target of 150 minutes of moderate activity a week. The NHS also suggests strengthening activities twice a week to round things out, but walking is a genuinely strong foundation rather than a poor substitute.
Does a treadmill burn the same as walking outdoors?
Roughly the same at the same pace, though walking outdoors adds wind, uneven terrain and gradient changes that can nudge it up a little. Setting a treadmill to a 1–2% incline is a common way to mimic outdoor effort.
The bottom line
Most adults burn roughly 200–350 calories an hour walking, driven mainly by their weight and pace. It's an estimate, not exact science — and walking's real value is that it's sustainable and good for far more than burning calories. To get a figure for your own weight, pace and time, use the calories-burned calculator on the homepage.
Sources: NHS Physical activity guidelines for adults and the NHS Active 10 programme; the Compendium of Physical Activities (MET values); British Heart Foundation. This article is general information only and does not replace medical advice.