I couldn't find one that worked so put a quick one together in excel. http://aoafiles.webs.com/AoA_Build_Calc.xls
StoneFord here, You may like the Tier 5 KaW Build Calculator here. I have kept it up to date since 2010 after the originator, President, left KaW. I asked for a sticky, but ATA support declined. Sorry folks! I guess Wulf'sis the officially sanctioned one. Though Wulf's does still have some small errors. My version was also reformatted to fit more on a page, and also allows more spreadsheet applications to edit. It's a labor of love.