What Week Is It?
Today, Wednesday, October 28, 2026, is week 44 of 2026.
How ISO week numbers work
ISO 8601 defines weeks as starting on Monday. Week 1 of a year is the week containing the first Thursday of January — equivalently, the week containing January 4th. A year has 52 or 53 numbered weeks. This is the standard used across Europe and in most business reporting; the US convention differs slightly (weeks start on Sunday and week 1 contains January 1st).
All 53 weeks of 2026
Week 1Week 2Week 3Week 4Week 5Week 6Week 7Week 8Week 9Week 10Week 11Week 12Week 13Week 14Week 15Week 16Week 17Week 18Week 19Week 20Week 21Week 22Week 23Week 24Week 25Week 26Week 27Week 28Week 29Week 30Week 31Week 32Week 33Week 34Week 35Week 36Week 37Week 38Week 39Week 40Week 41Week 42Week 43Week 44Week 45Week 46Week 47Week 48Week 49Week 50Week 51Week 52Week 53
Every week has its own page with all seven dates — e.g. week 1 of 2026 or week 53 of 2026. Weeks of 2025 are also available.