Why Garmin and Strava calculates differently

[novetan]

I realized there’s abt 300 Cal difference when calories are calculated between Garmin and Strava. For eg, when Garmin registered 700 Cal during my cycle, and after uploaded to Strava, it becomes 1,000 Cal. Why is that so and which one shld I trust. 300 Cal is a huge difference.

 

[ianrauk]

The same question was asked HERE in this thread just recently.

 

[yello]

Algorithms. Similarly, different sites have different methods of calculating climbing stats.

As to who is right.... they'll each will say that they are! Pick whichever ever one you prefer, and stay consistent. The values are then useful as comparative even if not accurate.