How to find Facebook Profile ID

Earlier we discussed how one can create Facebook username for a profile.

It is like changing your Facebook Profile URL from

https://www.facebook.com/profile.php?id=1363494049

into https://www.facebook.com/WaqasADay

But like me, if you are working to make use of some Facebook Apps or social plugin. Sometimes we need to use the profile ID and there is no simple or clear way. But here is what I found, and is how you can do it.

Go to this link:   http://graph.facebook.com/username

Using this URL, you can find ID of any Facebook Profile or Page. Just add the username at the end of the link and it works like bingo.