---
title: "upper"
description: "Takes a string and returns an uppercase version of it."
---

# upper

> Takes a string and returns an uppercase version of it.

**This function is used by Ignition's Expression language.**

## Description
## Syntax
`upper(string)`

### Parameters

| Type | Parameter | Description |
|---|---|---|
| String | `string` | The string to make uppercase. |

### Results
**String** - The starting string with all characters uppercase.

## Examples
```python title="Code Snippet"
upper("Hello World") //returns "HELLO WORLD"
```