To calculate calories burned walking, multiply the walk’s MET value by your body weight in kilograms and by the time walked in hours. Treat the result as an estimate, because weight, speed, slope and duration all shift it.
The method works with a notebook or a spreadsheet, and the tracker settings that feed the same maths are covered in how to use a fitness tracker. The sections below explain the unit behind the formula, the steps to apply it, what moves the answer, and how the 10,000-step estimate fits in.
The MET unit behind every walking estimate
A MET is a multiple of resting energy use. According to Calculator.net’s explanation of calorie burn, a MET value of 1 represents the energy an average person uses at rest. That is roughly 3.5 mL of oxygen per kilogram of body weight per minute. Every activity is rated as a multiple of that baseline, so a higher MET means a higher calorie rate for the same body.
Walking pace decides which MET you use. Slow walking is a light-intensity activity with a low MET value. The World Cancer Research Fund lists brisk walking as a moderate-intensity activity, so it needs a higher MET than slow walking. The practical rule is to pick the MET that matches how fast you actually walked, not the pace you intended.
Oxygen use per kilogram is also the basis of fitness testing. If you want to see how that scale relates to your own fitness, read Average VO2 Max: What Numbers Mean For Your Fitness In 2026 – Bioconnected.
The formula, step by step
In words, the formula is: calories burned = MET value × body weight in kilograms × time in hours. Follow these stages in order.
- Record your weight in kilograms. If your scale shows pounds, convert to kilograms first, because the formula expects the metric figure.
- Measure your walking speed. Use a tracker, a phone map or a marked route and a timer. Speed is what separates a light walk from a brisk one.
- Look up the MET for that speed. A published MET table that lists walking by pace gives the value. Slow walking sits at 2.0 MET, and brisk walking is moderate intensity, so it uses a higher row.
- Convert the time to hours. Minutes become a fraction of an hour.
- Multiply the three numbers. The product is your estimated calorie burn for that walk.
Mixed-pace walks
Most real walks include a slow start, a brisk middle and a pause at a crossing. Split the walk into segments of roughly steady speed, apply the formula to each, and add the results. One average MET across a walk with big pace changes hides the effort of the fast stretch.
Why duration scales the result
At the same intensity, a longer walk burns more. Calculator.net states it plainly: the longer a person performs an exercise, the more calories they burn. This is why time sits in the formula as a straight multiplier. Doubling the hours at the same pace doubles the estimate, while changing the pace changes the MET instead.
What changes the result
Omni Calculator’s walking calorie calculator lists four factors: speed, duration, weight and slope. The formula captures the first three directly. Slope is the one people tend to forget.
- Weight. A heavier walker burns more over the same distance, because the formula multiplies by body weight. Update your weight in any calculator or tracker profile when it changes.
- Speed. Pace sets the MET, so the same route walked briskly costs more per minute than a stroll. It may also take less time, so the total does not always rise.
- Duration. Time multiplies everything else. A short fast walk and a long slow one can land near each other.
- Slope. The same source notes that a decline burns fewer calories than a positive grade. Walking uphill raises the estimate, and a route that is mostly downhill lowers it.
- Body composition and effort. The American Cancer Society says actual calories burned vary with weight, body composition and level of intensity, and that not everyone burns the same amount for the same activity.
Because of the last point, two people with identical weight and speed can still differ. The formula gives a reasonable central estimate, not a personal measurement. Use it to compare your own walks over time, and avoid treating the figure as precise.
Shortcuts and the 10,000-step estimate
When you lack a MET table or a weight to hand, rules of thumb give a quick check. They assume an average person and an ordinary pace, so they suit rough planning more than careful logging.
| Measure | Estimate | Planning use |
|---|---|---|
| Walking time | About 50 kcal per 10 minutes | Quick check for a short walk when you know only the minutes |
| Walking distance | About 100 kcal per mile for an average person | Estimate a route when you know the distance but not the time |
| 10,000 steps, average man | Around 500 kcal | Estimate for an average man |
| 10,000 steps, petite woman of about 50 kg | Around 290 kcal | Lower reference for a lighter walker |
The time and distance rules come from Calories Burned HQ, and the step-count figures come from Omni Calculator.
The spread between the two step-count rows answers the common question about 10,000 steps. There is no single number: the same step count burns noticeably more for a heavier walker, so a figure quoted without a body weight tells you little. Find the row nearest your own weight, and use the MET formula if you want a closer match. If your question is how many steps to aim for in a day, How Many Steps Should You Walk Each Day? Simple Targets and Evidence-Based Guidance For 2026 – Bioconnected covers targets in more detail.
Choose the shortcut by what you know. Time alone points to the per-10-minute rule, distance alone to the per-mile rule, and a known weight plus pace to the full formula, which is the most responsive to your own body.
How far to trust tracker and calculator totals
Every calorie figure, from a watch or a web calculator, is a standardized estimate. Calculator.net says outright that calorie estimation is not an exact science and is based on an average person. The American Cancer Society’s own exercise calculator gives its numbers for a 150-pound person and warns that actual burn varies with weight, body composition and intensity.
So a tracker can run above or below your true burn, and a single total cannot show which. Two habits make the number more useful:
- Keep your profile accurate. Weight is a direct input to the calculation, so an outdated entry carries straight through to the total.
- Compare like with like. Use one method for all your walks. Trends from a consistent tool tell you more than any single reading.
If you are planning food intake around walking, lean on the cautious end of any estimate. Calorie burn is the one input in that plan you cannot measure directly.
Frequently asked questions
How many calories does a 30-minute walk burn?
Calories Burned HQ puts a 30-minute walk at between 100 and 175 calories, depending on your weight and pace. The lower end suits a lighter or slower walker, and the upper end a heavier or faster one.
Can I turn calories burned into weight lost?
Omni Calculator converts kilocalories to weight by dividing by 7700, which gives kilograms lost. It is a rough conversion for planning, and the original calorie figure it relies on is itself an estimate.
Is 10,000 steps the right daily goal?
Not necessarily. Omni Calculator suggests that a goal of 7,500-8,000 steps is a good idea, and the calorie burn from either goal depends on your weight and pace as described above.
Does the baseline resting MET mean I burn no extra calories?
The baseline MET is the resting energy expenditure, so an activity rated at that baseline adds nothing above resting energy use. Slow walking is a light-intensity activity, rated above that baseline.
