Today's Date 
Current Week Number
The current week number is 11. Today, Monday March 9 2026, falls in week 11 of 52 (ISO 8601).
Week Number
11
of 2026
Week Starts
March 9, 2026
Monday (ISO 8601)
Week Ends
March 15, 2026
Sunday (ISO 8601)
Weeks Left in Year
43
Remaining in 2026
Day of the Week
Monday
Today in week 11
| Wk | Monday Mon | Tuesday Tue | Wednesday Wed | Thursday Thu | Friday Fri | Saturday Sat | Sunday Sun |
|---|---|---|---|---|---|---|---|
| 9 | 1 | ||||||
| 10 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 11 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| 12 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| 13 | 23 | 24 | 25 | 26 | 27 | 28 | 29 |
| 14 | 30 | 31 |
Week Numbers for 2026
| Week Number | Starts | Ends | days |
|---|---|---|---|
| 1 | Dec 29 | Jan 04 | 7 |
| 2 | Jan 05 | Jan 11 | 7 |
| 3 | Jan 12 | Jan 18 | 7 |
| 4 | Jan 19 | Jan 25 | 7 |
| 5 | Jan 26 | Feb 01 | 7 |
| 6 | Feb 02 | Feb 08 | 7 |
| 7 | Feb 09 | Feb 15 | 7 |
| 8 | Feb 16 | Feb 22 | 7 |
| 9 | Feb 23 | Mar 01 | 7 |
| 10 | Mar 02 | Mar 08 | 7 |
| 11 | Mar 09 | Mar 15 | 7 |
| 12 | Mar 16 | Mar 22 | 7 |
| 13 | Mar 23 | Mar 29 | 7 |
| 14 | Mar 30 | Apr 05 | 7 |
| 15 | Apr 06 | Apr 12 | 7 |
| 16 | Apr 13 | Apr 19 | 7 |
| 17 | Apr 20 | Apr 26 | 7 |
| 18 | Apr 27 | May 03 | 7 |
| 19 | May 04 | May 10 | 7 |
| 20 | May 11 | May 17 | 7 |
| 21 | May 18 | May 24 | 7 |
| 22 | May 25 | May 31 | 7 |
| 23 | Jun 01 | Jun 07 | 7 |
| 24 | Jun 08 | Jun 14 | 7 |
| 25 | Jun 15 | Jun 21 | 7 |
| 26 | Jun 22 | Jun 28 | 7 |
| 27 | Jun 29 | Jul 05 | 7 |
| 28 | Jul 06 | Jul 12 | 7 |
| 29 | Jul 13 | Jul 19 | 7 |
| 30 | Jul 20 | Jul 26 | 7 |
| 31 | Jul 27 | Aug 02 | 7 |
| 32 | Aug 03 | Aug 09 | 7 |
| 33 | Aug 10 | Aug 16 | 7 |
| 34 | Aug 17 | Aug 23 | 7 |
| 35 | Aug 24 | Aug 30 | 7 |
| 36 | Aug 31 | Sep 06 | 7 |
| 37 | Sep 07 | Sep 13 | 7 |
| 38 | Sep 14 | Sep 20 | 7 |
| 39 | Sep 21 | Sep 27 | 7 |
| 40 | Sep 28 | Oct 04 | 7 |
| 41 | Oct 05 | Oct 11 | 7 |
| 42 | Oct 12 | Oct 18 | 7 |
| 43 | Oct 19 | Oct 25 | 7 |
| 44 | Oct 26 | Nov 01 | 7 |
| 45 | Nov 02 | Nov 08 | 7 |
| 46 | Nov 09 | Nov 15 | 7 |
| 47 | Nov 16 | Nov 22 | 7 |
| 48 | Nov 23 | Nov 29 | 7 |
| 49 | Nov 30 | Dec 06 | 7 |
| 50 | Dec 07 | Dec 13 | 7 |
| 51 | Dec 14 | Dec 20 | 7 |
| 52 | Dec 21 | Dec 27 | 7 |
| 53 | Dec 28 | Jan 03 | 7 |
FAQ
What is a week number?
A week number is a way to identify which week of the year a particular date falls into. Week 1 is typically the first week containing at least 4 days of the new year. There are 52 or 53 weeks in a year depending on which day January 1st falls on.
How are week numbers calculated?
Week numbers follow the ISO 8601 standard in most parts of the world. In this standard, Week 1 is the first week with a Thursday in it, and weeks always start on Monday. Some regions may use different standards where weeks start on Sunday or follow different rules.
Why do some years have 53 weeks?
A year has 53 weeks when January 1st falls on a Thursday or it's a leap year and January 1st falls on a Wednesday. This happens because the ISO 8601 standard bases week numbering on which week contains the first Thursday of the year.
What is the difference between ISO week and calendar week?
ISO weeks follow the ISO 8601 standard and always start on Monday, while calendar weeks (used in some countries like the USA) may start on Sunday. ISO week numbering is the international standard used in business and official contexts.
How can I use week numbers in planning?
Week numbers are useful for project planning, reporting, and scheduling across different regions. Many businesses use ISO week numbers for consistency, as they provide a clear, unambiguous way to reference time periods throughout the year.