npm package: @stdlib/time-ms2duration
Description: Convert a number of milliseconds to a string duration.
Author: The Stdlib Authors
Latest version: 0.2.3

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<details>
  <summary>
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# ms2duration

[![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 of milliseconds to a string duration.

<section class="installation">

## Installation

```bash
npm install @stdlib/time-ms2duration
```

</section>

<section class="usage">

## Usage

```javascript
var ms2duration = require( '@stdlib/time-ms2duration' );
```

#### ms2duration( str )

Converts a number of milliseconds to a string duration.

```javascript
var duration = ms2duration( 1030 );
// returns '1s30ms'

duration = ms2duration( 3600000 );
// returns '1h'
```

</section>

<!-- /.usage -->

<section class="notes">

## Notes

-   A duration string is a string containing a sequence of time units. A time unit is a nonnegative integer followed by a unit identifier. The following unit identifiers are supported:

    -   `d`: days
    -   `h`: hours
    -   `m`: minutes
    -   `s`: seconds
    -   `ms`: milliseconds

    For example, the string `1m3s10ms` is a duration string containing three time units: `1m` (1 minute), `3s` (3 seconds), and `10ms` (10 milliseconds). The string `60m` is a duration string containing a single time unit: `60m` (60 minutes).

</section>

<!-- /.notes -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var ms2duration = require( '@stdlib/time-ms2duration' );

var duration = ms2duration( 1030 );
// returns '1s30ms'

duration = ms2duration( 3600000 );
// returns '1h'

duration = ms2duration( 0 );
// returns '0ms'

duration = ms2duration( 86400000 );
// returns '1d'

duration = ms2duration( 86400000+3600000+60000+1000+100 );
// returns '1d1h1m1s100ms'
```

</section>

<!-- /.examples -->



<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

<section class="related">

## See Also

-   <span class="package-name">[`@stdlib/time-ms2duration-cli`][@stdlib/time-ms2duration-cli]</span><span class="delimiter">: </span><span class="description">CLI package for use as a command-line utility.</span>


<!-- /.related -->

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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].

</section>

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<section class="links">

[@stdlib/time-ms2duration-cli]: https://www.npmjs.com/package/@stdlib/time-ms2duration-cli

[npm-image]: http://img.shields.io/npm/v/@stdlib/time-ms2duration.svg
[npm-url]: https://npmjs.org/package/@stdlib/time-ms2duration

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[test-url]: https://github.com/stdlib-js/time-ms2duration/actions/workflows/test.yml?query=branch:v0.2.3

[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/time-ms2duration/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/time-ms2duration?branch=main

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

[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors

[cli-section]: https://github.com/stdlib-js/time-ms2duration#cli
[cli-url]: https://github.com/stdlib-js/time-ms2duration/tree/cli
[@stdlib/time-ms2duration]: https://github.com/stdlib-js/time-ms2duration/tree/main

[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/time-ms2duration/tree/deno
[deno-readme]: https://github.com/stdlib-js/time-ms2duration/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/time-ms2duration/tree/umd
[umd-readme]: https://github.com/stdlib-js/time-ms2duration/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/time-ms2duration/tree/esm
[esm-readme]: https://github.com/stdlib-js/time-ms2duration/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/time-ms2duration/blob/main/branches.md

[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/time-ms2duration/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

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</section>

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