# toUpperCase method

The `toUpperCase` method converts a string to uppercase (makes capital letters from small). This returns a new string and does not change the original string.

## Syntax

`string.toUpperCase();`

## Example

Let's convert all letters to uppercase:

`let str = 'abcde'; console.log(str.toUpperCase());`

The code execution result:

`'ABCDE'`

## Example

Also using the `slice` method you can convert individual letters to uppercase:

`let str = 'abcde'; let res = str.slice(0, 1).toUpperCase() + str.slice(1); console.log(res);`

The code execution result:

`'Abcde'`

## See also

- the `toLowerCase` method
  that converts a string to lowercase
- the `charAt` method
  that returns a character in a string

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