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# Upper

> Use the Sigma Upper function to convert a given string to uppercase.

Converts a given string to uppercase.

Along with **Lower**, this is useful for eliminating case-sensitivity in other Text functions.

## Usage

`Upper(text)`

**text** (required) Text or a column of text.

## Example

`Upper("Warning")`

* Returns “WARNING”

## Related resources

* [Lower](/docs/lower)
* [Proper](/docs/proper)