National Identity Card number is unique for each Sri Lankan.
At a glance it is just a sequence of numbers; but it contains some hidden details such as the persons gender and date of birth.
You can calculate those from below form. Enter your NIC no and click on "GO" button.
Note: There are two sections for Old format NIC and New format NIC.

Old NIC No  : v 
Gender   : Female
Birthday : 1994-MAR-4

New NIC No  :
Gender   :
Birthday : 


Cheers..!!