What week of the year is it?
If you want to know which week of the year we are in, find the answer below.
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The week number in ISO 8601 week-numbering system is:
… out of … weeks.
Monday is the first day of the week for more than 3 billion people, including people in the UK, France, Germany, Spain, Poland, the EU, China, Thailand, Australia, New Zealand, Turkey, Iraq, Lebanon, Congo, Kenya, and Uganda.
Current week number in US standard format is:
… out of … weeks.
Sunday is the first day of the week for approximately half of the world. In the United States, Canada, Argentina, Brazil, Colombia, South Africa, Nigeria, Egypt, Indonesia, Bangladesh, India, Pakistan, Japan, Israel, Saudi Arabia, and New Zealand the first day of the week is Sunday on their calendars.
How many weeks left in …?
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Compute weeks from today
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Useful: Weeks calculator
Calendar with week numbers
January 2026
| W | Mo | Tu | We | Th | Fr | Sa | Su |
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How to get the current week's number in Excel?
You might work with Microsoft Excel or Google Sheets for projects or to determine pay dates for employees. Use the WEEKNUM and ISOWEEKNUM functions to find the current week number.
- WEEKNUM uses the week containing January 1 as the first week of the year. The outcome ranges from 1 to 54.
- ISOWEEKNUM uses the week containing the first Thursday of the year as the first week of the year. This follows ISO 8601. ISOWEEKNUM returns week numbers from 1 to 53.
So the formula to get the current week number in Excel is =WEEKNUM(TODAY()) or =ISOWEEKNUM(TODAY()) for the ISO number.
Related: How many weeks in a year?
Week Numbers
Number of weeks in … year is … weeks
… weeks passed in … year excluding current week #–
… weeks left in … year, until next … year starts, excluding current week #–
Weeks are according to United States calendar rules, Sunday first day and weeks are Sunday to Saturday.
| Week Number | Start Date | End Date |
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