Yes, the standard convention to estimate calories is to include your underlying metabolism as well as the additional calories burned through exercise. This applies across websites, wearable HRM's, laboratory measurements, etc.
The reason for this is that scientists and doctors are usually interested in the TOTAL load on the heart and lungs, which of course includes the need to supply oxygen for metabolism as well as exercise.
While for weight loss purposes, this is perhaps technically a double count (given metabolism is nomally accounted for elsewhere), for short duration intense exercise, the double count is really pretty insignificant, and probably less than the margin of error in calorie estimation anyway. It does become more of an issue for exercise that lasts for several hours (eg. a century bike ride, hiking several miles, etc).
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
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