What Week of the Year Is It?

Current week:

Week 30

of 52 weeks in 2026

57.7% elapsed โ€” 23 weeks remaining

Q3 Week Reference โ€” 2026

Week #StartEnd
27Jul 2Jul 8
28Jul 9Jul 15
29Jul 16Jul 22
โ†’ 30Jul 23Jul 29
31Jul 30Aug 5
32Aug 6Aug 12
33Aug 13Aug 19
34Aug 20Aug 26
35Aug 27Sep 2
36Sep 3Sep 9
37Sep 10Sep 16
38Sep 17Sep 23
39Sep 24Sep 30

What Is ISO Week Numbering?

The ISO 8601 standard defines week 1 as the week containing the first Thursday of the year. Each ISO week starts on Monday and ends on Sunday. Most of the world (Europe, Asia) uses ISO weeks for business planning, payroll, and logistics.

The US and Canada less commonly use ISO weeks, but they're standard in software (Excel's ISOWEEKNUM()), international shipping, and manufacturing.

Who Uses Week Numbers?