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- # string-width [](https://travis-ci.org/sindresorhus/string-width)
- > Get the visual width of a string - the number of columns required to display it
- Some Unicode characters are [fullwidth](https://en.wikipedia.org/wiki/Halfwidth_and_fullwidth_forms) and use double the normal width. [ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code) are stripped and doesn't affect the width.
- Useful to be able to measure the actual width of command-line output.
- ## Install
- ```
- $ npm install string-width
- ```
- ## Usage
- ```js
- const stringWidth = require('string-width');
- stringWidth('古');
- //=> 2
- stringWidth('\u001b[1m古\u001b[22m');
- //=> 2
- stringWidth('a');
- //=> 1
- stringWidth('\u001B]8;;https://github.com\u0007Click\u001B]8;;\u0007');
- // => 5
- ```
- ## Related
- - [string-width-cli](https://github.com/sindresorhus/string-width-cli) - CLI for this module
- - [string-length](https://github.com/sindresorhus/string-length) - Get the real length of a string
- - [widest-line](https://github.com/sindresorhus/widest-line) - Get the visual width of the widest line in a string
- ## License
- MIT © [Sindre Sorhus](https://sindresorhus.com)
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