Alimony is not only based on the incomes of the parties but also on the length of the marriage and the ability of the proposed recipient to earn a living.
There are several Florida alimony calculators online but they are provided by law firms and we are not allowed to link to them so just google Florida alimony calculator.
For information on how ANY Florida court calculates alimony, read the statute Section 61.08 of the Florida Civil Practice and Procedure:
http://www.leg.state.fl.us/Statutes/...s/0061.08.html

