Theres no real definitive answers to this,because so many factors can take place, from speed and pace, height, weight ect..
Now, According to Harvard Medical School, someone who weighs 125 pounds will burn about 240 calories per hour walking at a slow pace of 3.5 miles per hour, which is a 17-minute mile, and burn about 270 calories walking one hour at a more brisk pace of 4 miles per hour, which is a 15-minute-mile...
So you see, so many variables here!
Below has a general idea, however its like apples and oranges...Consider bending over repeatedly, carrying loads, and so on!
(study conducted)
You can burn a significant amount of calories walking, even at a slow pace. According to PubMed Health, sedentary people who start walking regularly will see a reduction in body weight, body fat, body mass index and blood pressure. The amount of calories you can burn from a slow walk depends on your body weight, pace and the duration of your walk. The U.S. Department of Health and Human Services recommends adults engage in at least 2.5 hours of moderate-intensity physical activity each week.
125-Pound Person
A 125-pound person burns fewer calories walking than someone with a heavier body weight, because it’s easier for a smaller person to walk the same distance as a larger person. According to Harvard Medical School, someone who weighs 125 pounds will burn about 240 calories per hour walking at a slow pace of 3.5 miles per hour, which is a 17-minute mile, and burn about 270 calories walking one hour at a more brisk pace of 4 miles per hour, which is a 15-minute-mile.
155- to 160-Pound Person
If you weigh 155 to 160 pounds, you’ll burn slightly more calories than a 125-pound person would walking at slow pace. Harvard Medical School reports that a 155-pound person will burn about 298 calories walking 3.5 miles per hour for one hour, and can burn 334 calories per hour walking a pace of 4 miles per hour for an hour. According to MayoClinic.com, a 160-pound person who walks at a slower pace of 2 miles per hour will burn about 204 calories per hour.
200-Pound Person
If you weigh 200 pounds, you’ll burn more calories walking the same pace and duration as a smaller person, but you may not be able to comfortably walk as fast. MayoClinic.com reports that a 200-pound person will burn 255 calories walking at a pace of 2 miles per hour for one hour, and burn about 391 calories per hour walking a pace of 3.5 miles per hour.
