Depends on how hard you're working, how fit you are, and how much muscles you have to work with. I can burn around of 900 cals in an hour, but it takes some doing to be able to maintain that output for that long. If you're just starting to get serious about exercise you might want to aim lower.
you burn about 346 calories an hour.....
Light standing occupations burn 150 calories per hour
50
About 580 - 600 calories
Burning calories depends on many factors. Stretching pizza for an hour could burn a few extra calories, but those calories are really negligible at the end of the day.
you burn 300
About 200 calories per hour.
no more than 500 calories
200
650-900
50
You might burn 390 Calories per hour of Dodgeball play