ms.js: miliseconds conversion utility ms('1d') // 86400000 ms('10h') // 36000000 ms('2h') // 7200000 ms('1m') // 60000 ms('5s') // 5000 ms('100') // 100 ms(100) // 100 ms(60000) // "1 minute" ms(2 * 60000) // "2 minutes" ms(ms('10 hours')) // "10 hours" Node/Browser compatible. Published as ms in NPM. If a number is supplied to ms, it returns it immediately. 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 ms is returned.