Week Number
Find out what week it is right now or check the week number for any date in a snap.
Current Week Information
2
January 5, 2026 - January 11, 2026
51 weeks left in 2026
Understanding Week Numbers
Ever wondered what week it is,or how to figure out the week number for a certain date? Our Week Number tool makes it easy. It follows the ISO 8601 standard, which is used worldwide in business and international contexts. Basically, weeks start on Monday, and the first week of the year is the one that has the first Thursday. Confusing? Don’t worry, the calculator does all the math for you.
Frequently Asked Questions