Originally Posted by
Sy Reene
Yeah, with a powermeter, basically Strava seems to always show me almost the same number of calories as the Energy Output value (kilojoules)
There's a reason for that. 4.184 kJ/Cal (from memory) and 25% average human body efficiency. Do the math (4.184/4) and they're identical to within 5%, which is probably as accurate as the 25% number is.