Hi,
After about 15 minutes of web searching,
the Square Enix forumla for iLevel calculation
appears to be elusive.

Example:

100 - Main Hand
100 - Head
110 - Body
100 - Hands
100 - Waist
120 - Legs
100 - Feet
100 - Neckless
100 - Earrings
100 - Bracelet
100 - Ring
120 - Ring

iLvl = 103 as displayed in attributes
Mathematical average iLevel = 104.167
1250/12 = 104.167

Disparity becomes 1.167

Anyone know the Square Enix iLvl formula?
Thanks