My rides recently started reporting calories to Strava with an inflated value (~4 times the Kj value). My last ride was 60 mins at 223 watt average, 803 Kj. Strava shows 2761 calories burned. This just started happening in the last week or so. Before, it matched the Kj value.
Sorry forgot to respond to this. I did not think we do the calorie reporting but I will double check.