Is it Week’s, Weeks’, or Weeks? Simple Examples and When to Use

Do you ever find yourself writing or saying, “I haven’t seen her in weeks”? I know I certainly do—in fact, it’s not unusual to hear people use the plural of the noun “weeks” (for example: “It’s been three weeks”).

Time expressions can be tricky when trying to add apostrophes.

The main thing to note is:

Weeks is used as the plural of week (it’s been three weeks since I’ve seen Alice).

Week’s is used to show the singular possessive form of ‘week.’ (This week’s newspaper focuses on the death of the famous American singer).

Weeks’ is used with a possessive plural time unit. (She is taking two weeks’ holiday from work).

Week’s and Weeks’

If we write time in the singular possessive (meaning one week only), we can spell week as week’s.

For example, I am going to the hairdresser in one week’s time.

If we are writing the time in the plural possessive (meaning more than one week), we spell week as weeks’.

For example, I have to give two weeks’ notice if I want to resign from my job.

Incorrect Way to Write Week’s and Weeks’

Here are some example sentences with week’s and weeks’ not to be confused!

  • I hope to give a presentation in one week’s of time. [incorrect- no ‘of’]
  • I hope to give a presentation in one week’s time/ I hope to give a presentation in one week. [correct]
  • He is due three weeks’ of pay in lieu of notice. [incorrect- we can’t include the apostrophe with ‘of.’]
  • He is due three weeks’ pay in lieu of notice/ He is due three weeks of pay in lieu of notice. [correct]


If we want to make week plural, we add an -s.

  • There are only six more weeks left of school.
  • I’ve worked on the project for weeks.
  • How many weeks until the concert?

Compound Adjectives with Week

Compound adjectives occur when we combine two words with a hyphen to describe a noun. We only use a hyphen when the compound adjective comes before the noun.

We don’t need to add an ‘s’ for compound adjectives.

For example:

Adam went on a six-week volunteer trip to Africa.

Melissa took a one-week break from work.

Related Questions

Do weeks need an apostrophe?

Weeks doesn’t require an apostrophe because the -s make it plural. The same rule applies to other units of time like months and years.

Weeks = multiple weeks (more than one)

Week’s = the duration of one week

When do weeks take an apostrophe?

If you mean “a week’s worth of something,” then the apostrophe comes before the s, as in one week’s worth—examples: a week’s notice, two weeks’ notice, three weeks’ notice.

Is it last week or last week’s?

We can use last week or last week’s, depending on the context. For example, I went to the bank last week. Last week’s meeting went very well.

What does a week’s time mean?

We use this phrase to mean one week’s worth of time. A period of seven consecutive days. For example, I will be free to meet up in a week’s time.

When do you use weeks?

Weeks is the plural form of the noun week. We use the word weeks when we are talking about more than one week.

What is the difference between “next week” and “coming week?”

“Next week” and “coming week” both mean the same thing. Next week is the week that follows the week that includes today. The coming week sounds more formal and we mostly say this near the end of the current week.

Next week or the next week?

We use the next week when we are talking about the week immediately after this week that includes today; for example, I am going fishing next week. We might use “the next week” to describe a week in the future or past.

For example, “I will go to France with my friends next week, and the next week I will go to Italy with my family.” We can also say “the week after that” instead of saying “the next week.”

In Conclusion

Week’s, weeks’, and weeks are all correct, but the placement or removal of the apostrophe depends on whether the sentence is possessive or plural.

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