Note: Make sure that you select the right tank style or the results will be inaccurate.
Use this and any other stocking calculator with caution.
At best it will give you an idea about the approximate stocking level but there are so many variable factors that no calculator will do any more than that.
Take a look at this stocking article which lists some of the things which have to be taken in to consideration and use some common sense too. If you still aren't certain then join a fish forum and ask there. Above all listen to advice and don't keep asking until you get the answer that you want because over stocking and stocking inappropriately will lead to problems which are easily avoided.