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I want to convert a string "2013-09-05 15:34:00" into a Unix timestamp in javascript. Can any one tell how to do that? thanks.

Newbie
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5 Answers5

85

You can initialise a Date object and call getTime() to get it in unix form. It comes out in milliseconds so you'll need to divide by 1000 to get it in seconds.

(new Date("2013/09/05 15:34:00").getTime()/1000)

It may have decimal bits so wrapping it in Math.round would clean that.

Math.round(new Date("2013/09/05 15:34:00").getTime()/1000)
Mousius
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12

try 

(new Date("2013-09-05 15:34:00")).getTime() / 1000
Mohsen
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7

DaMouse404 answer works, but instead of using dashes, you will use slashes:

You can initialise a Date object and call getTime() to get it in unix form. It comes out in milliseconds so you'll need to divide by 1000 to get it in seconds.

(new Date("2013/09/05 15:34:00").getTime()/1000)

It may have decimal bits so wrapping it in Math.round would clean that.

Math.round(new Date("2013/09/05 15:34:00").getTime()/1000)
Community
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cumanacr
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    `(new Date("2013-09-05 15:34:00").replace(/-/g, '/').getTime()/1000)` be careful when using replace function, you should use `g`, otherwise it will only convert the first dash. I waste a lot of time on this. – Zhang Buzz Jun 07 '17 at 15:55
  • I'm not sure why the last comment was upvoted. A `Date` object does not have a `replace` method. Also, this answer is incorrect; using slashes produces the incorrect format for guaranteed parsing by `Date.parse` (what is used by `new Date(string)`). See [Why does Date.parse give incorrect results?](https://stackoverflow.com/q/2587345/215552). – Heretic Monkey Aug 18 '21 at 12:44
5

For this you should check out the moment.s-library

Using that you could write something like: 

newUnixTimeStamp = moment('2013-09-05 15:34:00', 'YYYY-MM-DD HH:mm:ss').unix();
ftoyoshima
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Mahus
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3

I would go with date parse myself since it is the native solution. MDN documentation.

const datetimeString = '04 Dec 1995 00:12:00 GMT';
const unixTimestamp = Date.parse(datetimeString);
// unixTimestamp = 818035920000
Jordan Bice
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  • `new Date(string)` uses `Date.parse`. Also, you shouldn't use `Date.parse` on arbitrary formats. See [Why does Date.parse give incorrect results?](https://stackoverflow.com/q/2587345/215552). – Heretic Monkey Aug 18 '21 at 12:46