What Week Is It?

The live answer is at the top of this page: the current ISO week number plus the week's Monday–Sunday dates. It updates automatically every day.

The hero above shows the current ISO week number right now, together with the week range and the ISO code (for example 2026-W44).

The current ISO week number is shown live at the top of this page. It follows the ISO 8601 system: weeks start on Monday, and week 1 is the week containing the first Thursday of the year.

An ISO 8601 week number counts the weeks of the year under one international rule: every week starts on Monday, and week 1 is the week containing the first Thursday of the year (January 4 always falls in week 1). Weeks are written as YYYY-Www, for example 2026-W44.

Under ISO 8601 the week starts on Monday. Many US calendars start the week on Sunday instead, which can put the same date in a different week number near the start or end of a year. This tool uses the ISO (Monday-start) system, the international standard.

Most years have 52 weeks, but some have 53. A year gets a 53rd ISO week when it starts on a Thursday — or, for leap years, when it starts on a Wednesday. 2026 starts on a Thursday, so it has 53 ISO weeks.

Use the date finder above: pick any date and it shows that date's ISO week number plus the full Monday–Sunday range of that week. The full year list below covers every week with its dates.

Next week is the current week number plus one — except after the year's last week, when it rolls to week 1 of the next ISO year. Use the finder above with next week's dates for the exact number.

Christmas Day, December 25, 2026, falls in ISO week 52. Use the finder above for Christmas in any other year, since the week number moves with the calendar.

Easter Sunday, April 5, 2026, falls in ISO week 14. Easter moves every year, so use the finder above for other years.

In 2026, Q3 starts in week 27 (July 1) and Q4 starts in week 40 (October 1). Q1 starts in week 1 (January 1) and Q2 in week 14 (April 1).

Europe follows ISO 8601 (Monday start, first-Thursday rule), so week numbers match this page. The US has no single standard — Sunday-start counting is common and can shift the number by one near year boundaries. For international work, use the ISO number shown here.