I have been using Diet Power for awhile to track what I eat
and what I burn from exercise. One big inaccuracy is that many activities listed have easy, medium, and intense levels with varying calorie burns/hour.

Is there a way to better estimate calorie burn from my heart rate during
exercise?

Calculating calories burned per activity seems a bit cumbersome, and I like to track what I do. Not quite to the level of detail where I'm concerned with the calorie burn associated with each activity I do during a day.

Having said that, I don't know of any calorie-consumptive equations that are based on heart rates and are specific to a single time frame or activity. I've always just gone with the Harris-Benedict equation multiplied by an activity factor, but that's a prediction for a whole day, not specific to an activity.

-R

I don't know of anything. I would think it is not possible with just the HR. Your weight would have a lot to do with it -- for example, it would take more calories (more energy) to move 200 pounds 1 mile down the road than it would take to move 150 pounds 1 mile down the road, though their HRs could be the same. Also, when you increase your HR for an extended time, then you're burning extra calories afterwards for a while, too, but that tapers off depending on your activity, your diet, etc. So, I don't think it is possible. I'm with Bluestreak. I tend to think about calories burned daily, rather than by the length of activity. I don't know an accurate gauge that is less time than a day.