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Pick a date and see its week number, or enter a week number and a year and get the dates of that week. The page starts on today.
Week number
44
October 28, 2026 is in week 44 of 2026, which runs from October 26, 2026 to November 1, 2026. That year has 53 weeks.
ISO 8601: weeks run Monday to Sunday and week 1 is the week with the year's first Thursday. A date near New Year can belong to the week-year before or after its own year. If the year has no week 53, the dates show a dash.
Weeks follow the ISO 8601 standard: they run from Monday to Sunday, and week 1 is the week that contains the year’s first Thursday. That is why the first days of January can belong to the last week of the year before, and why a year has either 52 or 53 weeks.
Example. 1 January 2027 is a Friday and belongs to week 53 of 2026; week 1 of 2027 starts on Monday 4 January. The year 2026 has 53 weeks, 2025 has 52.
Last reviewed October 19, 2026 ·How pages are reviewed
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