Difference between Varchar and Nvarchar() data Type in SQL SEVER

Below table lists out the major difference between the VARCHAR and NVARCHAR Data Type in Sql Server:

	Varchar(n)	Nvarchar(n)
Basic Definition	Non-Unicode variable length character data type	Unicode variable length character data type. It can store Unicode and Non-Unicode (e.g. japanese,chinese) character.
Number of bytes required by each character	It takes one byte per character	It takes 2 byte per Unicode/Non-Unicode character
Optional Parameter n range	Optional Parameter n value can be from 1 to 8000.Can store maximum 8000 Non-Unicode characters.	Optional Parameter n value can be from 1 to 4000.Can store maximum 4000 Unicode/Non-Unicode characters
Use	If we know that data to be stored in the column or variable doesn’t have any Unicode characters.	If we know that the data to be stored in the column or variable can have Unicode characters.
Storage capacity	Takes no. of bytes equal to the no. of Characters entered plus two bytes extra for defining offset.	Takes no. of bytes equal to twice the no. of Characters entered plus two bytes extra for defining offset.