LEN DAX Function (Text)

Returns the number of characters in a text string.

Syntax

LEN ( <Text> )
Parameter Attributes Description
Text

The text whose length you want to find. Spaces count as characters.

Return values

Scalar A single integer value.

The number of characters in the text string.

» 1 related article

Examples

--  LEFT, RIGHT, MID and LEN are the basic string-manipulation functions
DEFINE 
    VAR Val = "DAX is so cool!"
EVALUATE
{
    ( "LEFT ( Val, 3 ) ",   LEFT  ( Val, 3     ) ),
    ( "RIGHT ( Val, 5 )",   RIGHT ( Val, 5     ) ),
    ( "MID ( Val, 11, 4 )", MID   ( Val, 11, 4 ) ),
    ( "LEN ( Val )",        LEN   ( Val        ) )
}
Value1 Value2
LEFT ( Val, 3 ) DAX
RIGHT ( Val, 5 ) cool!
MID ( Val, 11, 4 ) cool
LEN ( Val ) 15

Related articles

Learn more about LEN in the following articles:

Last update: Nov 7, 2024   » Contribute   » Show contributors

Contributors: Alberto Ferrari, Marco Russo

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

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Context Transition

This function performs a Context Transition if called in a Row Context. Click to read more.

Row Context

This expression is executed in a Row Context. Click to read more.

Iterator

Not recommended

The use of this function is not recommended. See Remarks and Related functions for alternatives.

Not recommended

The use of this parameter is not recommended.

Deprecated

This function is deprecated. Jump to the Alternatives section to see the function to use.

Volatile

A volatile function may return a different result every time you call it, even if you provide the same arguments. Click to read more.

Deprecated

This parameter is deprecated and its use is not recommended.

DirectQuery compatibility

Limitations are placed on DAX expressions allowed in measures and calculated columns.
The state below shows the DirectQuery compatibility of the DAX function.

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