Walking is easy, low-cost and among the most accessible physical activities. It can help you maintain a healthy weight. You will lose weight if you manage to burn more calories than you consume over time.
The Formula
Calculating the number of calories you burn walking considers a number of different factors; your starting weight, the speed you walk and the time you spend walking. If you weigh 155 lbs., and walk at 3 mph, you'll burn 246 calories per hour, or 82 calories per mile. Now multiply this figure by 3.7 to calculate how many calories you consume walking 3.7 miles at 3 mph, with a starting weight of 155 lbs. The final figure is 303 calories.
Slow Walking Speed
If you weigh 155 lbs., and walk at 2 mph, you'll burn 176 calories. This equates to 88 calories per mile or 326 calories every 3.7 miles. If you weigh 190 lbs., and walk at the same speed you'll burn 216 calories every hour or 400 calories every 3.7 miles.
Brisk Walking Speed
If you weigh 155 lbs., and walk at 3.5 mph, you'll burn 298 calories every hour, according to Harvard Medical School. This equates to 85 calories per mile or 316 calories every 3.7 miles. If you weigh 185 lbs. and walk at the same speed, you'll burn 356 calories every hour, or 377 calories every 3.7 miles.
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