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# pretty-bytes [](https://travis-ci.org/sindresorhus/pretty-bytes)
> Convert bytes to a human readable string: `1337` → `1.34 kB`
Useful for displaying file sizes for humans.
-
*Note that it uses base-10 (eg. kilobyte).
[Read about the difference between kilobyte and kibibyte.](http://pacoup.com/2009/05/26/kb-kb-kib-whats-up-with-that/)*
## Install
```
$ npm install --save pretty-bytes
```
```
$ bower install --save pretty-bytes
```
```
$ component install sindresorhus/pretty-bytes
```
## Usage
```js
prettyBytes(1337);
//=> '1.34 kB'
prettyBytes(100);
//=> '100 B'
```
## CLI
```
$ npm install --global pretty-bytes
```
```
$ pretty-bytes --help
Usage
$ pretty-bytes <number>
$ echo <number> | pretty-bytes
Example
$ pretty-bytes 1337
1.34 kB
```
## License
MIT © [Sindre Sorhus](http://sindresorhus.com)
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