A worked example
10,000 steps for someone 170 cm tall and 75 kg, at an average pace, covers about 7.1 km in 94 minutes. That burns roughly 370 kcal in total. 260 kcal of it is the walk itself; the rest your body would have used lying still.
How the calories are worked out
Steps times step length gives the distance, and the pace gives the time. The cost of every minute then comes from Ludlow and Weyand’s walking equation, built from speed, slope and body weight. When the same team checked four lab equations against people walking a 6.4 km outdoor course, it overestimated the measured burn by 4%. The ACSM equation behind most step calculators overestimated by 13%.
Weight matters most, because walking is mostly lifting and carrying your own body. Pace matters less than people expect: walking faster costs more per minute, but you’re done sooner. A very slow stroll even costs a little more for the same steps, because the minutes add up.
| Weight | Slow | Average | Brisk | Fast |
|---|---|---|---|---|
| 55 kg | 300 kcal | 270 kcal | 270 kcal | 270 kcal |
| 65 kg | 360 kcal | 320 kcal | 310 kcal | 320 kcal |
| 75 kg | 420 kcal | 370 kcal | 360 kcal | 360 kcal |
| 85 kg | 470 kcal | 420 kcal | 410 kcal | 410 kcal |
| 95 kg | 530 kcal | 470 kcal | 460 kcal | 460 kcal |
| 110 kg | 610 kcal | 540 kcal | 530 kcal | 530 kcal |
Burned versus added
Your body burns energy lying in bed, so not every calorie in a walk is extra. The equation separates the two: at the page’s default about 71% of the total is the walk itself, and the rest is what you’d have burned anyway. That added part is the honest answer to “how much did this walk change my day?”.
It also explains why apps disagree. Some report the whole burn for those minutes, others only the active part, and the gap between the two is close to a third.
How far is 10,000 steps?
A step is roughly 41% of your height, so taller people cover more ground with the same count. If you’ve measured your own step length, put it in the form: it changes the distance and the calories with it.
| Height | Step length | Distance |
|---|---|---|
| 150 cm | 62 cm | 6.2 km (3.9 mi) |
| 160 cm | 66 cm | 6.6 km (4.1 mi) |
| 170 cm | 71 cm | 7.1 km (4.4 mi) |
| 180 cm | 75 cm | 7.5 km (4.6 mi) |
| 190 cm | 79 cm | 7.9 km (4.9 mi) |
Is 10,000 steps the right goal?
It’s a round number, not a threshold. In a pooled analysis of 15 studies with 47,000 adults, the risk of dying during follow-up kept falling as steps went up, then levelled off around 6,000 to 8,000 a day for people over 60 and 8,000 to 10,000 for younger adults. Going from 3,000 to 6,000 counts for far more than going from 10,000 to 13,000.
Questions people ask
Should I eat back the calories from my steps?
Only the added part, and only if your calorie target doesn’t already count them. If you chose “on your feet most of the day” in a TDEE calculator, your usual steps are in there already, so eat back only the walks that go beyond a normal day.
How many steps does it take to burn 500 kcal?
At an everyday pace, someone 170 cm and 75 kg needs about 13,500 steps for 500 kcal in total. A heavier person needs fewer, a lighter one more, and walking uphill cuts the count a lot: put your own numbers in above.
Does walking uphill or on grass change it?
Uphill a lot: a 5% incline adds roughly half again at an everyday pace. Downhill costs about a fifth less than flat ground. Grass and trails cost around 8% more than pavement in the field study, which the incline box doesn’t cover.
Is a treadmill the same as walking outside?
Close to it at walking speeds. The equation was built on a treadmill and held up within 4% outdoors, so the numbers work for both. Holding the handrails takes a real part of the work away, though.
Sources
- Ludlow LW, Weyand PG. Walking economy is predictably determined by speed, grade, and gravitational load. J Appl Physiol, 2017
- Weyand PG, Ludlow LW, et al. Real-world walking economy: can laboratory equations predict field energy expenditure? J Appl Physiol, 2021
- Paluch AE, et al. Daily steps and all-cause mortality: a meta-analysis of 15 international cohorts. Lancet Public Health, 2022