My summer fairy dust stored in Bkool is 248W but on my Garmin watch it's predicting 224W based on more recent efforts. I trust the Garmin more - so 224/82 = 2.7W/kg for me.Hi guys, for comparison and stats I would like to know your watt/kg number. So, divide your FTP by your weight (in kgs) and report it, so I can add it to the sheet. Mine is 265/105 = 2,5W/kg.