Week of the Year Calculator
Calculate which week of the year a date falls in.
Result
24. hafta
09 June 2026 → week 24 of the year
Result in all units
Step-by-step solution
What Is a Week Number?
The week number shows which week of the year a date falls in. In the ISO 8601 standard, weeks start on Monday and it is used in work planning.
How is it calculated?
How Is It Calculated?
- Enter the date.
- According to the ISO 8601 rule, which week of the year it is is found.
The first week of the year is the week containing the first Thursday.
Frequently Asked Questions
How many weeks are there in a year?
According to the ISO system, most years have 52 weeks and some years have 53 weeks.