The Wilks Coefficient is a formula used to determine the best lifter or lift of powerlifters of different body weights.  The Wilks Coefficient is by Robert Wilks, Australia.  The lifter with the highest resulting figure is the "best lifter".  For printable charts of the Wilks Forumla for Men and Women in both pounds and kilos can be found on the USA Powerlifting website in the Lifter's Corner at: http://www.usapowerlifting.com/lifterscorner