What week is it?
Week numbering
All weeks of 2026
2026: 53 weeks
| Week | Dates |
|---|---|
| W1 | Dec 28, 2025 – Jan 3, 2026 |
| W2 | Jan 4 – Jan 10, 2026 |
| W3 | Jan 11 – Jan 17, 2026 |
| W4 | Jan 18 – Jan 24, 2026 |
| W5 | Jan 25 – Jan 31, 2026 |
| W6 | Feb 1 – Feb 7, 2026 |
| W7 | Feb 8 – Feb 14, 2026 |
| W8 | Feb 15 – Feb 21, 2026 |
| W9 | Feb 22 – Feb 28, 2026 |
| W10 | Mar 1 – Mar 7, 2026 |
| W11 | Mar 8 – Mar 14, 2026 |
| W12 | Mar 15 – Mar 21, 2026 |
| W13 | Mar 22 – Mar 28, 2026 |
| W14 | Mar 29 – Apr 4, 2026 |
| W15 | Apr 5 – Apr 11, 2026 |
| W16 | Apr 12 – Apr 18, 2026 |
| W17 | Apr 19 – Apr 25, 2026 |
| W18 | Apr 26 – May 2, 2026 |
| W19 | May 3 – May 9, 2026 |
| W20 | May 10 – May 16, 2026 |
| W21 | May 17 – May 23, 2026 |
| W22 | May 24 – May 30, 2026 |
| W23 | May 31 – Jun 6, 2026 |
| W24 | Jun 7 – Jun 13, 2026 |
| W25 | Jun 14 – Jun 20, 2026 |
| W26 | Jun 21 – Jun 27, 2026 |
| W27 | Jun 28 – Jul 4, 2026 |
| W28 | Jul 5 – Jul 11, 2026 |
| W29 | Jul 12 – Jul 18, 2026 |
| W30 | Jul 19 – Jul 25, 2026 |
| W31 | Jul 26 – Aug 1, 2026 |
| W32 | Aug 2 – Aug 8, 2026 |
| W33 | Aug 9 – Aug 15, 2026 |
| W34 | Aug 16 – Aug 22, 2026 |
| W35 | Aug 23 – Aug 29, 2026 |
| W36 | Aug 30 – Sep 5, 2026 |
| W37 | Sep 6 – Sep 12, 2026 |
| W38 | Sep 13 – Sep 19, 2026 |
| W39 | Sep 20 – Sep 26, 2026 |
| W40 | Sep 27 – Oct 3, 2026 |
| W41 | Oct 4 – Oct 10, 2026 |
| W42 | Oct 11 – Oct 17, 2026 |
| W43 | Oct 18 – Oct 24, 2026 |
| W44 | Oct 25 – Oct 31, 2026 |
| W45 | Nov 1 – Nov 7, 2026 |
| W46 | Nov 8 – Nov 14, 2026 |
| W47 | Nov 15 – Nov 21, 2026 |
| W48 | Nov 22 – Nov 28, 2026 |
| W49 | Nov 29 – Dec 5, 2026 |
| W50 | Dec 6 – Dec 12, 2026 |
| W51 | Dec 13 – Dec 19, 2026 |
| W52 | Dec 20 – Dec 26, 2026 |
| W53 | Dec 27, 2026 – Jan 2, 2027 |
All weeks of 2026 · Calendar 2027 with holidays
The week number counts the weeks of the year. Most of Europe and Asia use ISO 8601: weeks start on Monday and week 1 is the week with the year's first Thursday, so 1-3 January can still belong to week 52 or 53 of the previous year. In the US, weeks start on Sunday and week 1 is the week that contains 1 January. Everything is calculated in your browser from your local date.
Questions
Why is 1 January 2027 in week 53?
Under ISO 8601 a week belongs to the year of its Thursday. The week of 28 December 2026 - 3 January 2027 has its Thursday in 2026, so it is week 53 of 2026. Week 1 of 2027 starts on Monday 4 January.
Which years have 53 weeks?
An ISO year has 53 weeks when 1 January is a Thursday, or a Wednesday in a leap year. 2026 and 2032 have 53 weeks; 2027 has 52.
Why does my US calendar show a different week?
US calendars start weeks on Sunday and count the week containing 1 January as week 1, so the number can be one higher than the ISO week. Pick the system you need above.