What week is it? Calendar weeks 2027
Week number
Week 41 of 2026
Monday, Oct 5 — Sunday, Oct 11, 2026
Right now we are in week 41 of 2026, calculated by the ISO-8601 standard. Bookmark this page to check the current week number anytime.
Week 1 of 2027 begins in 87 days, on Monday, January 4, 2027. Every week number of 2027 is listed below.
Calendar weeks 2027
Calendar weeks 2027: all 52 ISO weeks
ISO-8601 week numbering
January 2027
| WN | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 53 | 28 | 29 | 30 | 31 | 1 | 2 | 3 |
| 01 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 02 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| 03 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
| 04 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
February 2027
| WN | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 05 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 06 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| 07 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| 08 | 22 | 23 | 24 | 25 | 26 | 27 | 28 |
March 2027
| WN | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 09 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 10 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| 11 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| 12 | 22 | 23 | 24 | 25 | 26 | 27 | 28 |
| 13 | 29 | 30 | 31 | 1 | 2 | 3 | 4 |
April 2027
| WN | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 13 | 29 | 30 | 31 | 1 | 2 | 3 | 4 |
| 14 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| 15 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| 16 | 19 | 20 | 21 | 22 | 23 | 24 | 25 |
| 17 | 26 | 27 | 28 | 29 | 30 | 1 | 2 |
May 2027
| WN | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 17 | 26 | 27 | 28 | 29 | 30 | 1 | 2 |
| 18 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 19 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| 20 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| 21 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
| 22 | 31 | 1 | 2 | 3 | 4 | 5 | 6 |
June 2027
| WN | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 22 | 31 | 1 | 2 | 3 | 4 | 5 | 6 |
| 23 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| 24 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 25 | 21 | 22 | 23 | 24 | 25 | 26 | 27 |
| 26 | 28 | 29 | 30 | 1 | 2 | 3 | 4 |
July 2027
| WN | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 26 | 28 | 29 | 30 | 1 | 2 | 3 | 4 |
| 27 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| 28 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| 29 | 19 | 20 | 21 | 22 | 23 | 24 | 25 |
| 30 | 26 | 27 | 28 | 29 | 30 | 31 | 1 |
August 2027
| WN | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 30 | 26 | 27 | 28 | 29 | 30 | 31 | 1 |
| 31 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 32 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| 33 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| 34 | 23 | 24 | 25 | 26 | 27 | 28 | 29 |
| 35 | 30 | 31 | 1 | 2 | 3 | 4 | 5 |
September 2027
| WN | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 35 | 30 | 31 | 1 | 2 | 3 | 4 | 5 |
| 36 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 37 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| 38 | 20 | 21 | 22 | 23 | 24 | 25 | 26 |
| 39 | 27 | 28 | 29 | 30 | 1 | 2 | 3 |
October 2027
| WN | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 39 | 27 | 28 | 29 | 30 | 1 | 2 | 3 |
| 40 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 41 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| 42 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
| 43 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
November 2027
| WN | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 44 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 45 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| 46 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| 47 | 22 | 23 | 24 | 25 | 26 | 27 | 28 |
| 48 | 29 | 30 | 1 | 2 | 3 | 4 | 5 |
December 2027
| WN | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 48 | 29 | 30 | 1 | 2 | 3 | 4 | 5 |
| 49 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 50 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| 51 | 20 | 21 | 22 | 23 | 24 | 25 | 26 |
| 52 | 27 | 28 | 29 | 30 | 31 | 1 | 2 |
Grey dates belong to the neighbouring month. The current week is highlighted in blue; today appears in bold.
Find any week
What week is it on a given date?
Pick any date in 2027 and instantly see which ISO week number it falls into.
About week numbers
How ISO week numbers are calculated
The question "what week is it?" is one of the most searched time-related queries. This page answers it instantly: the current ISO week number is shown at the top, updated live, and the full set of calendar weeks 2027 is listed above.
Week numbers here follow the ISO-8601 standard, used internationally for scheduling and business. In this system a week starts on Monday, and week 1 of a year is the week that contains the first Thursday of January. The year 2027 contains 52 weeks: week 1 begins on Monday, January 4, 2027, and week 52 ends on Sunday, January 2, 2028.
Whether you are planning a project, a sprint, a holiday, or a delivery, knowing the exact week number keeps everyone aligned. Use the date finder above to map any date in 2027 to its week number.
If you are searching for "what week are we in" or the week number for today, the answer is the same: the current ISO week shown at the top of this page. The week number advances every Monday, so bookmark this page and today's week is always one glance away.
Frequently asked
What week is it? Your questions answered
What week is it?
The current week number is shown in the large number at the top of this page. It updates automatically every Monday, when the new ISO-8601 week begins.
What week are we in right now?
This page always shows the live current week. Next to the big week number you can see the exact Monday-to-Sunday dates that the current week covers.
How many weeks are in 2027?
2027 is a 52-week ISO year. Week 1 begins on Monday, January 4, 2027, and week 52 ends on Sunday, January 2, 2028.
How is the week number calculated?
Week numbers follow the ISO-8601 standard: every week runs from Monday to Sunday, and week 1 is the week that contains the first Thursday of January. This is the system used across Europe and in international business.
Does the week start on Monday or Sunday?
In the ISO-8601 system used on this page, weeks always start on Monday and end on Sunday.
How do I find the week number for a date in 2027?
Use the date finder on this page. Pick any day in 2027 and the matching ISO week number appears instantly, together with its Monday-to-Sunday range.