I have tried searching in a number of places but could not find a reliable article/documentation that lists the official abbreviation of "week".

There were however a couple of articles that said that there is no official abbreviation for week.

If you do know the abbreviation, also please share the source.

  • 1
    If you are unable to find an official abbreviation, and you have found evidence that there is no official abbreviation, why are you assuming that the evidence you've found is incorrect? Mar 13, 2018 at 15:15
  • 1
    Because that is just off articles and not from official ISO documentation. Mar 13, 2018 at 15:17
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    If the only satisfactory denial of an abbreviation would be from ISO documentation, why is non-ISO assertions of existance going to be satisfactory? It seems to me that you should be contacting ISO to make your inquiry, not StackExchange. Mar 13, 2018 at 15:21
  • 2
    Why would we need an abbreviation for 'week' ?
    – Nigel J
    Mar 13, 2018 at 16:04
  • 1
    How about wk., wks.?
    – KarlG
    Mar 13, 2018 at 19:15

1 Answer 1


As KarlG and Barmar suggest, "wk" is a common abbreviation. So common, in fact, that if you look that up, you get:

WK abbreviation for (Telecommunications) week

(Collins English Dictionary via thefreedictionary.com) Other definitions for "wk" are also available, but there isn’t a standard SI unit abbreviation for a week, since the international standard unit of time is the second.

  • 1
    "wk" does seem like the most used abbreviation. Thanks. Mar 13, 2018 at 21:06
  • It’s too broad to have a firm definition. Even a "working week" varies quite a lot, so I’d be surprised if there’s an "official" designation for the abbreviation.
    – Pam
    Mar 13, 2018 at 21:22

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