REPLACE DAX Function (Text)

Syntax  |  Return values  |  Remarks  |  Examples  |  Related  

Replaces part of a text string with a different text string.

Syntax

REPLACE ( <OldText>, <StartPosition>, <NumberOfCharacters>, <NewText> )

Parameter	Attributes	Description
OldText		The string of text that contains the characters you want to replace.
StartPosition		The position of the character in old_text that you want to replace with new_text.
NumberOfCharacters		The number of characters that you want to replace.
NewText		The replacement text.

Return values

Scalar A single string value.

The resulting string after applying the replacements.

Remarks

The StartPosition starts from 1 for the first character in the string.

» 1 related function

Examples

--  REPLACE lets you replace part of a string with a new string
DEFINE 
    VAR Val = "DAX is so cool !"
    VAR Replacement = "fantastic"
EVALUATE
{
    ( "Original", Val ),
    ( "Replaced", REPLACE ( Val, 11, 4, Replacement ) )
}

Value1	Value2
Original	DAX is so cool !
Replaced	DAX is so fantastic !

Related functions

Other related functions are:

• SUBSTITUTE

Last update: Oct 22, 2025   » Contribute   » Show contributors

Contributors: Alberto Ferrari, Marco Russo

Microsoft documentation: https://docs.microsoft.com/en-us/dax/replace-function-dax