MS

Easily convert various time formats to milliseconds, and milliseconds back to the formats. Forked from vercel/ms

Demo

https://christopher-caldwell.github.io/ms/

Installation

# Yarn
yarn add @caldwell619/ms

# NPM
npm install --save @caldwell619/ms

Usage

2 main utilities are exposed:

import { convertTimeToMs, convertMsToTime } from '@caldwell619/ms'

The only required argument is the input to be converted.

Converting logical units to milliseconds

Full list of supported units

import { convertTimeToMs } from '@caldwell619/ms'

convertTimeToMs('5s') // 5000
convertTimeToMs('1m') // 60000
convertTimeToMs('10h') // 36000000
convertTimeToMs('2 days') // 172800000
convertTimeToMs('1y') // 31557600000
convertTimeToMs('-1h') // -3600000

Number as milliseconds

import { convertMsToTime, convertTimeToMs } from '@caldwell619/ms'

convertMsToTime(60000) // "1m"
convertMsToTime(2 * 60000) // "2m"
convertMsToTime(-3 * 60000) // "-3m"
convertMsToTime(convertTimeToMs('10 hours')) // "10h"

Optional Configuration

The config is optional, as is every key in the config

Argument	Type	Description
long	boolean	If present, will return the long version of the unit.
preferredUnit	'ms', 's', 'm', 'h', 'w', 'd', 'mo', 'y'	The supported unit you'd like the value returned in.

Long

This will print the value as hours, minutes as opposed to h, m.

convertMsToTime(60000, { long: true }) // "1 minute"
convertMsToTime(2 * 60000, { long: true }) // "2 minutes"
convertMsToTime(-3 * 60000, { long: true }) // "-3 minutes"
convertMsToTime(convertTimeToMs('10 hours'), { long: true }) // "10 hours"

Preferred Unit

This is a working progress. It is implemented, but possibly not the way you'd like. Feel free to submit an issue or PR with how you'd like it done.

If provided, it will attempt to match the value with the given unit.

Example

For example, if your value resolves to 15 days, that is also 2 weeks. The default will return as 2 weeks. This is the largest bucket the time can be put into.

This can be overridden with providing your preferredUnit.

convertMsToTime(7200000) // "2h"
convertMsToTime(7200000, { preferredUnit: 'm' }) // "120m"
convertMsToTime(7200000, { preferredUnit: 'm', long: true }) // "120 minutes"

Edge Cases

If your provided unit doesn't meet the requirement, meaning that the value cannot get to a full count of your unit, it will default to the next closest one.

convertMsToTime(7200000) // "2h"
convertMsToTime(7200000, { preferredUnit: 'd' }) // "2h"
convertMsToTime(7200000, { preferredUnit: 'd', long: true }) // "2 hours"

In this example, 2 hours cannot be represented as a > 1 day. This is where the funny business is, because maybe you'd prefer 0.08d instead of defaulting to 2h.

My preference is the latter, so 🤷‍♂️

Supported Units

The following unites are supported for convertTimeToMs

Years

years, year, yrs, yr y

Months

months, month, mon, mo

Weeks

weeks, week, wks, wk, w

Days

days, day, d

Hours

hours, hour, hrs, hr, h

Minutes

minutes, minute, mins, min, m

Seconds

seconds, second, secs, sec, s

Milliseconds

milliseconds, millisecond, msecs, msec, ms