How to tell if a name is male or female?

I used to have a site bookmarked where you'd enter a name and you would be told whether the name was male or female.





This used a US census, and would tell you the percentage likelihood. Does anyone know this site or something similar. I get a lot of international queries in my job and would like to not offend people by getting it wrong.

How to tell if a name is male or female?
well some names are simply 100% male, like John, Michael etc.


smoe are 100% female, like Mary, Lisa etc.





there are a few unisex names, Rene is one of them e.g.


i suppose you could determin the 'likely hood' of a rene being female by using statistics. (names registered in the last 100 years)





if you want to know foreign names, you could try some 'babynames' websites.