| # ms | |
| [](https://travis-ci.org/zeit/ms) | |
| [](https://spectrum.chat/zeit) | |
| Use this package to easily convert various time formats to milliseconds. | |
| ## Examples | |
| ```js | |
| ms('2 days') // 172800000 | |
| ms('1d') // 86400000 | |
| ms('10h') // 36000000 | |
| ms('2.5 hrs') // 9000000 | |
| ms('2h') // 7200000 | |
| ms('1m') // 60000 | |
| ms('5s') // 5000 | |
| ms('1y') // 31557600000 | |
| ms('100') // 100 | |
| ms('-3 days') // -259200000 | |
| ms('-1h') // -3600000 | |
| ms('-200') // -200 | |
| ``` | |
| ### Convert from Milliseconds | |
| ```js | |
| ms(60000) // "1m" | |
| ms(2 * 60000) // "2m" | |
| ms(-3 * 60000) // "-3m" | |
| ms(ms('10 hours')) // "10h" | |
| ``` | |
| ### Time Format Written-Out | |
| ```js | |
| ms(60000, { long: true }) // "1 minute" | |
| ms(2 * 60000, { long: true }) // "2 minutes" | |
| ms(-3 * 60000, { long: true }) // "-3 minutes" | |
| ms(ms('10 hours'), { long: true }) // "10 hours" | |
| ``` | |
| ## Features | |
| - Works both in [Node.js](https://nodejs.org) and in the browser | |
| - If a number is supplied to `ms`, a string with a unit is returned | |
| - If a string that contains the number is supplied, it returns it as a number (e.g.: it returns `100` for `'100'`) | |
| - If you pass a string with a number and a valid unit, the number of equivalent milliseconds is returned | |
| ## Related Packages | |
| - [ms.macro](https://github.com/knpwrs/ms.macro) - Run `ms` as a macro at build-time. | |
| ## Caught a Bug? | |
| 1. [Fork](https://help.github.com/articles/fork-a-repo/) this repository to your own GitHub account and then [clone](https://help.github.com/articles/cloning-a-repository/) it to your local device | |
| 2. Link the package to the global module directory: `npm link` | |
| 3. Within the module you want to test your local development instance of ms, just link it to the dependencies: `npm link ms`. Instead of the default one from npm, Node.js will now use your clone of ms! | |
| As always, you can run the tests using: `npm test` | |