Nobody knows The Exact Google Algorithm except Google Engineers:- On the Basis of my search I found this info:- [ MAX BID * KEYWORD CTR * (AD GROUP CTR or AD COPY AVERAGE CTRS or something to this effect) * POSSIBLE A CAMPAIGN WIDE CTR * POSSIBLY SOME CAMPAIGN OR ACCOUNT AGE FACTOR * (A LOCALIZATION FACTOR APPLIED DEPENDING ON WHERE THE SEARCH ORIGINATED)] = RANK SCORE May be of Some help to you.