Dec 28, 2025 · Week number. See here which week number this week has. On this website we've also listed annual and monthly calendars including 2026, 2027 and 2028.

6 days ago · Find the number of the week for a specific date. See the date range for any week in a specific year. Note: The page updates every minute to provide you with the most accurate information.

What Week Is It Today?

Sunday is the first day of week and Saturday if the last day of the week. The first week of the year is the week that contains January 4th, first 4 days of the year.

Week 01 is from Monday, December 29, 2025 until (and including) Sunday, January 4, 2026. Week number according to the ISO-8601 standard, weeks starting on Monday. The first week of the year is …

6 days ago · Check the current week number and convert between dates and week numbers on Weeknumber.com.

Dec 28, 2025 · Find the ISO week number for any date. See which week of the year it is and the date range for that week.

Find your ISO 8601 week number—weeks start Monday and week 1 holds January 4. Perfect for sprints, payroll, logistics.

1 day ago · The corresponding week is highlighted on the calendar shown to the right. All results are calculated instantly, there is no need to click any buttons or reload the page.

Access public holiday calendars for the current and upcoming years.