npm package: @stdlib/string-num2words-cli
Description: Convert a number to a word representation.
Author: The Stdlib Authors
Latest version: 0.2.3

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# num2words

[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] <!-- [![dependencies][dependencies-image]][dependencies-url] -->

> Convert a number to a word representation.

<section class="intro">

</section>

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<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->







<section class="cli">



<section class="installation">

## Installation

To use as a general utility, install the CLI package globally

```bash
npm install -g @stdlib/string-num2words-cli
```

</section>

<!-- CLI usage documentation. -->

<section class="usage">

## Usage

```text
Usage: num2words [options] [<string>]

Options:

  -h,    --help                Print this message.
  -V,    --version             Print the package version.
         --split sep           Delimiter for stdin data. Default: '/\\r?\\n/'.
         --lang lang           Language. Default: 'en'.
```

</section>

<!-- /.usage -->

<section class="notes">

## Notes

-   If the split separator is a [regular expression][mdn-regexp], ensure that the `split` option is either properly escaped or enclosed in quotes.

    ```bash
    # Not escaped...
    $ echo -n $'15\n23' | num2words --split /\r?\n/

    # Escaped...
    $ echo -n $'15\n23' | num2words --split /\\r?\\n/
    ```

-   The implementation ignores trailing delimiters.

</section>

<!-- /.notes -->

<section class="examples">

## Examples

```bash
$ num2words '10'
ten
```

To use as a [standard stream][standard-streams],

```bash
$ echo -n '23' | num2words
twenty-three
```

By default, when used as a [standard stream][standard-streams], the implementation assumes newline-delimited data. To specify an alternative delimiter, set the `split` option.

```bash
$ echo -n '10.3\t23.1' | num2words --split '\t'
ten point three
twenty-three point one
```

</section>

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</section>

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<section class="references">

</section>

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<section class="related">

## See Also

-   <span class="package-name">[`@stdlib/string-num2words`][@stdlib/string-num2words]</span><span class="delimiter">: </span><span class="description">convert a number to a word representation.</span>


</section>

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<section class="main-repo" >

* * *

## Notice

This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].

### Community

[![Chat][chat-image]][chat-url]

---

## License

See [LICENSE][stdlib-license].


## Copyright

Copyright &copy; 2016-2026. The Stdlib [Authors][stdlib-authors].

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[test-url]: https://github.com/stdlib-js/string-num2words/actions/workflows/test.yml?query=branch:v0.2.3

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[stdlib]: https://github.com/stdlib-js/stdlib

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[cli-section]: https://github.com/stdlib-js/string-num2words#cli
[cli-url]: https://github.com/stdlib-js/string-num2words/tree/cli
[@stdlib/string-num2words]: https://www.npmjs.com/package/@stdlib/string-num2words

[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules

[deno-url]: https://github.com/stdlib-js/string-num2words/tree/deno
[deno-readme]: https://github.com/stdlib-js/string-num2words/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/string-num2words/tree/umd
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[esm-url]: https://github.com/stdlib-js/string-num2words/tree/esm
[esm-readme]: https://github.com/stdlib-js/string-num2words/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/string-num2words/blob/main/branches.md

[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/string-num2words/main/LICENSE

[standard-streams]: https://en.wikipedia.org/wiki/Standard_streams

[mdn-regexp]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions

</section>

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