Tutorials References Exercises Bootcamp Menu
Sign Up Create Website Get Certified Pro

SQL Tutorial

SQL HOME SQL Intro SQL Syntax SQL Select SQL Select Distinct SQL Where SQL And, Or, Not SQL Order By SQL Insert Into SQL Null Values SQL Update SQL Delete SQL Select Top SQL Min and Max SQL Count, Avg, Sum SQL Like SQL Wildcards SQL In SQL Between SQL Aliases SQL Joins SQL Inner Join SQL Left Join SQL Right Join SQL Full Join SQL Self Join SQL Union SQL Group By SQL Having SQL Exists SQL Any, All SQL Select Into SQL Insert Into Select SQL Case SQL Null Functions SQL Stored Procedures SQL Comments SQL Operators

SQL Database

SQL Create DB SQL Drop DB SQL Backup DB SQL Create Table SQL Drop Table SQL Alter Table SQL Constraints SQL Not Null SQL Unique SQL Primary Key SQL Foreign Key SQL Check SQL Default SQL Index SQL Auto Increment SQL Dates SQL Views SQL Injection SQL Hosting SQL Data Types

SQL References

SQL Keywords MySQL Functions SQL Server Functions MS Access Functions SQL Quick Ref

SQL Examples

SQL Examples SQL Editor SQL Quiz SQL Exercises SQL Certificate

SQL Server CONVERT() Function


Convert an expression to int:

SELECT CONVERT(int, 25.65);
Try it Yourself »

Definition and Usage

The CONVERT() function converts a value (of any type) into a specified datatype.

Tip: Also look at the CAST() function.


CONVERT(data_type(length), expression, style)

Parameter Values

Value Description
data_type Required. The datatype to convert expression to. Can be one of the following: bigint, int, smallint, tinyint, bit, decimal, numeric, money, smallmoney, float, real, datetime, smalldatetime, char, varchar, text, nchar, nvarchar, ntext, binary, varbinary, or image
(length) Optional. The length of the resulting data type (for char, varchar, nchar, nvarchar, binary and varbinary)
expression Required. The value to convert to another data type
style Optional. The format used to convert between data types, such as a date or string format. Can be one of the following values:

Converting datetime to character:
Without century With century Input/Output Standard
0100mon dd yyyy hh:miAM/PMDefault
1101mm/dd/yyyy US
2102 yyyy.mm.ddANSI
3103 dd/mm/yyyyBritish/French
5105 dd-mm-yyyyItalian
6106dd mon yyyy-
7107Mon dd, yyyy-
9109mon dd yyyy hh:mi:ss:mmmAM (or PM)Default + millisec
11111 yyyy/mm/ddJapan
12112 yyyymmddISO
13113dd mon yyyy hh:mi:ss:mmm Europe (24 hour clock)>
14114hh:mi:ss:mmm24 hour clock
20120yyyy-mm-dd hh:mi:ssODBC canonical (24 hour clock)
21121yyyy-mm-dd hh:mi:ss.mmmODBC canonical (24 hour clock)
 127yyyy-mm-ddThh:mi:ss.mmmZISO8601 (with time zone Z)
 130dd mon yyyy hh:mi:ss:mmmAMHijiri
 131dd/mm/yy hh:mi:ss:mmmAMHijiri
Converting float to real:
Value Explanation
0Maximum 6 digits (default)
18 digits
216 digits
Converting money to character:
Value Explanation
0No comma delimiters, 2 digits to the right of decimal
1Comma delimiters, 2 digits to the right of decimal
2 No comma delimiters, 4 digits to the right of decimal

Technical Details

Works in: SQL Server (starting with 2008), Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse

More Examples


Convert an expression from one data type to another (varchar):

SELECT CONVERT(varchar, 25.65);
Try it Yourself »


Convert an expression from one data type to another (datetime):

SELECT CONVERT(datetime, '2017-08-25');
Try it Yourself »


Convert an expression from one data type to another (varchar):

SELECT CONVERT(varchar, '2017-08-25', 101);
Try it Yourself »