How many calories does a six mile bike ride burn?

Question

I bike six (or sometimes just three) miles a day. None of it is coasting and I put it on a high gear so that it's always a work out. I've never timed it, but I think it usually takes between 15-45 minutes, depending on whether I do three or six.

How many calories does that burn? Or is there no way of knowing?

Answer 1

A Lot. riding your bike is so healthy, it gets your heart rate up.  

Answer 2

Diet rules-              

http://feedbackhq.com/

Answer 3

There are calorie burning calculators online. You have to put in your weight, and type the number of minutes next to the activity.

Assuming you are140 lbs, and cycled for 30 minutes, you would have burned 277 calories.