# IF

Checks a condition, and returns one value when it's TRUE, otherwise it returns a second value.

## Syntax

```
IF(<logical_test>, <value_if_true>[, <value_if_false>])
```

### Parameters

Term | Definition |
---|---|

logical_test | Any value or expression that can be evaluated to TRUE or FALSE. |

value_if_true | The value that's returned if the logical test is TRUE. |

value_if_false | (Optional) The value that's returned if the logical test is FALSE. If omitted, BLANK is returned. |

## Return value

Either **value_if_true**, **value_if_false**, or BLANK.

## Remarks

The IF function can return a variant data type if

**value_if_true**and**value_if_false**are of different data types, but the function attempts to return a single data type if both**value_if_true**and**value_if_false**are of numeric data types. In the latter case, the IF function will implicitly convert data types to accommodate both values.For example, the formula

`IF(<condition>, TRUE(), 0)`

returns TRUE or 0, but the formula`IF(<condition>, 1.0, 0)`

returns only decimal values even though**value_if_false**is of the whole number data type. To learn more about implicit data type conversion, see Data types.To execute the branch expressions regardless of the condition expression, use IF.EAGER instead.

## Examples

The following **Product** table calculated column definitions use the IF function in different ways to classify each product based on its list price.

The first example tests whether the **List Price** column value is less than 500. When this condition is true, the value **Low** is returned. Because there's no **value_if_false** value, BLANK is returned.

*Examples in this article can be used with the sample Adventure Works DW 2020 Power BI Desktop model. To get the model, see DAX sample model.*

```
Price Group =
IF(
'Product'[List Price] < 500,
"Low"
)
```

The second example uses the same test, but this time includes a **value_if_false** value. So, the formula classifies each product as either **Low** or **High**.

```
Price Group =
IF(
'Product'[List Price] < 500,
"Low",
"High"
)
```

The third example uses the same test, but this time nests an IF function to perform an additional test. So, the formula classifies each product as either **Low**, **Medium**, or **High**.

```
Price Group =
IF(
'Product'[List Price] < 500,
"Low",
IF(
'Product'[List Price] < 1500,
"Medium",
"High"
)
)
```

Tip

When you need to nest multiple IF functions, the SWITCH function might be a better option. This function provides a more elegant way to write an expression that returns more than two possible values.