Date → Week Number
ISO week
Day of year
297
Day of week
Saturday
Weeks in 2026
53
Saturday, October 24, 2026 is in ISO Week 43 of 2026. There are 68 days left in the year.
Week Number → Dates
Week 43 of 2026 is Mon, Oct 19 – Sun, Oct 25, 2026
Mon
19
Oct
Tue
20
Oct
Wed
21
Oct
Thu
22
Oct
Fri
23
Oct
Sat
24
Oct
Sun
25
Oct
Results
Export week number
How to use
Follow these steps to get a result
Pick a date (or tap Today) to see its ISO week number.
Read day-of-year, weekday, and how many weeks that year has.
Use Week → Dates to look up Monday–Sunday for any year and week.
Export the week result and lookup range (Copy / CSV / PDF).
Features
What this tool includes
ISO 8601 week numbers
Date → week and week → date range
Day of year and days remaining
7-day week calendar strip
Exportable week snapshot
FAQ
Common questions about this tool
Related tools
Continue with something nearby
Time zone rules come from the IANA time zone database; daylight saving changes are applied automatically. Methodology · Data sources