PI DAX Function (Math and Trig)

Returns the value of π, 3.14159265358979, accurate to 15 digits.

Syntax

PI ( )

This expression has no parameters.

Return values

Scalar A single decimal value.

A decimal number with the value of π, 3.14159265358979, accurate to 15 digits.

Remarks

π is a mathematical constant. In DAX, π is represented as a real number accurate to 15 digits, the same as the function PI in Excel.

Examples

--  SQRTPI computes the square root of the value multiplied by Pi
--  PI returns the value of Pi with 15 digits of accuracy
DEFINE
    VAR Vals = GENERATESERIES ( 1, 25, 3 )
EVALUATE
ADDCOLUMNS ( 
    Vals,
    "SQRTPI",       SQRTPI ( [Value] ),
    "SQRT and PI",  SQRT   ( [Value] * PI () )
)
Value SQRTPI SQRT and PI
1 1.77 1.77
4 3.54 3.54
7 4.69 4.69
10 5.60 5.60
13 6.39 6.39
16 7.09 7.09
19 7.73 7.73
22 8.31 8.31
25 8.86 8.86

Last update: Nov 23, 2021   » Contribute   » Show contributors

Contributors: Alberto Ferrari, Marco Russo

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

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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