here is a calculator, now the author (not me) has stated there are a few bugs
http://code.google.com/p/minecraft-ench ... alculator/so to use it
you select the category of the item and material type you are planning on enchanting
then you can either hit calculate which will just do 1 cycle, and that shows you all of the possible levels and results
or you can do the 1000 cycle and that will show you the odds of getting this one enchantment
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