How many calories will I burn per hour of brisk walking (4-5 miles per hour)?
For weight loss you need to subtract out your calories due to basal metabolism because those are calories you burn all the time whether you walk or not. That gives you net calories. The formula to estimate net calories burned walking is .3 x body weight (lbs). For you that is .3 x 245 or 74 calories per mile. Given that your walking speed is up to 5 mph which is very fast, that might get bumped up to 100 calories per mile (500 in an hour at that speed) The fact that you are able to walk that fast tells me you can probably jog, which more than doubles your net calorie burn (.63 x wt) Do not believe the reading on exercise machines in the gym.