Depends on a lot of things, but mainly how hard you ride. Anything between 300 and 1200 cal/hour is possible. Simply pootling around, not breaking a sweat won't do much, while going flat out may get you closer to a thousand. Most will probably be in the 450-600 cals range.
No, tennis would burn more calories over the course of an hour.
I burn 910 calories in 1 hour of hard cycling according to my Garmin.
you burn about 346 calories an hour.....
Light standing occupations burn 150 calories per hour
If you weigh 185 lbs. and walk 4 miles per hour, you'll burn 400 calories an hour or 100 calories per mile. If you weigh 155 lbs., you'll burn 334 calories per hour or 83.5 calories per mile
If you weigh 220 pounds, and walk at a pace of 3.5 miles per hour, then you will burn 398 Calories per hour. It depends on how you define briskly though. Most sources will say anything above 3 miles per hour is considered brisk, in which case the minimum amount of Calories you would burn per hour would be 345. If you consider 5 miles per hour a brisk pace, which is a very fast power walk, then you would burn over 800 Calories per hour.
The more vigorous the workout, the more calories per hour the exerciser will burn. Full body workouts tend to burn more calories per hour than partial body workouts. An elliptical machine, for example, where the user moves their arms, will burn more calories per hour than a stationary bicycle. Sports such as running, hiking and racquetball also burn a high number of calories per hour.
A gram of any kind of fat is about 8 calories. The time to burn it depends on your activity. You burn calories even at rest (1.6 calories/hour) so at rest it would take you about 5 hours to burn 1 gram of fat. If instead of sitting alone in a chair you were kissing someone you would burn 8 calories in about 5 minutes. If you were walking you would burn 8 calories in 2 or 3 minutes.
Play Dance Dance Revolution on the basic setting, and you'll burn approx. 250 calories in 1 hour.
Running is the winner for most calories burned per hour.
About 580 - 600 calories
A 150 lb person would burn 429 calories in 1 hour of moderate downhill skiing.