I am looking for a way to accurately workout how many calories I am burning on my bike. I have a standard bike mounted on a cycle exercising stand. At the moment, I have no way of working out anything. I only have a heart rate monitor.
There's a VERY accurate approach, but it requires being in a lab and having equipment hooked up to you.
Another approach is using a calories burnt calculator. (If you look up calorie burned calculator you'll find dozens - they should be based on type of exercise, your weight and the exercise duration).
Some points to keep in mind:
- You can do the same exercise, the same way, but burn calories differ based on what you ate prior to the workout, room temp, etc.
- Calories burned related directly to weight loss, but not the same every time, depending on your eating habits, intensity, sleep level - you will most likely not burn the same # of calories, but if you did, most likely not 'lose' the same amount of weight
- Post exercise 'after' burn needs to be taken into consideration - the more aerobic the exercise the less 'after' calorie burn is present
If you spend a few min's performing one of the general fitness assessments, to obtain your approximate VO2max volume, then your heart rate and activity duration should offer enough data to calculate a fairly accurate value, see: Is it possible to measure calorie burn from heart rate alone?