Originally Posted by
rm -rf
Yes, this seems to be broken on Strava now.
I have a power meter that does give me consistent results.
For a recent ride recording:
Strava shows:
1164 kj
2815 calories!! uh, no.
Golden Cheetah shows 1159 kj.
From a ride in Oct 2017:
Strava:
1003 kj
1118 calories
Golden Cheetah shows 997 kj.
~~~~~~~~~~~~
From
one of the many explanations via google:
Kilojoules for a ride are quite close to calories for the the ride. (Calories might be slightly higher than the kj number).
Essentially:
about 4 kj is one calorie.
but people are about 25% efficient in converting food into useful work. (The other 75% is wasted heat!)
so 4 kj *.25 is effectively 1 calorie.
Yeah, seems like a bug in Strava. The ratio, even if it isn't exactly 1:1 should be fairly consistent in your rides. They're essentially converting between two units of energy and multiplying by an estimate for human efficiency. Perhaps different conditions cause it to estimate different levels of efficiency, but you shouldn't see huge differences like this at all.