EpochKit

Weeks by Year

View all week numbers and their start/end dates for any year according to ISO-8601 standard.

2026 has 53 weeks according to ISO-8601.

Week NumberStart DateEnd Date
Week 01Monday, December 29, 2025Sunday, January 4, 2026
Week 02Monday, January 5, 2026Sunday, January 11, 2026
Week 03Monday, January 12, 2026Sunday, January 18, 2026
Week 04(Current)Monday, January 19, 2026Sunday, January 25, 2026
Week 05Monday, January 26, 2026Sunday, February 1, 2026
Week 06Monday, February 2, 2026Sunday, February 8, 2026
Week 07Monday, February 9, 2026Sunday, February 15, 2026
Week 08Monday, February 16, 2026Sunday, February 22, 2026
Week 09Monday, February 23, 2026Sunday, March 1, 2026
Week 10Monday, March 2, 2026Sunday, March 8, 2026
Week 11Monday, March 9, 2026Sunday, March 15, 2026
Week 12Monday, March 16, 2026Sunday, March 22, 2026
Week 13Monday, March 23, 2026Sunday, March 29, 2026
Week 14Monday, March 30, 2026Sunday, April 5, 2026
Week 15Monday, April 6, 2026Sunday, April 12, 2026
Week 16Monday, April 13, 2026Sunday, April 19, 2026
Week 17Monday, April 20, 2026Sunday, April 26, 2026
Week 18Monday, April 27, 2026Sunday, May 3, 2026
Week 19Monday, May 4, 2026Sunday, May 10, 2026
Week 20Monday, May 11, 2026Sunday, May 17, 2026
Week 21Monday, May 18, 2026Sunday, May 24, 2026
Week 22Monday, May 25, 2026Sunday, May 31, 2026
Week 23Monday, June 1, 2026Sunday, June 7, 2026
Week 24Monday, June 8, 2026Sunday, June 14, 2026
Week 25Monday, June 15, 2026Sunday, June 21, 2026
Week 26Monday, June 22, 2026Sunday, June 28, 2026
Week 27Monday, June 29, 2026Sunday, July 5, 2026
Week 28Monday, July 6, 2026Sunday, July 12, 2026
Week 29Monday, July 13, 2026Sunday, July 19, 2026
Week 30Monday, July 20, 2026Sunday, July 26, 2026
Week 31Monday, July 27, 2026Sunday, August 2, 2026
Week 32Monday, August 3, 2026Sunday, August 9, 2026
Week 33Monday, August 10, 2026Sunday, August 16, 2026
Week 34Monday, August 17, 2026Sunday, August 23, 2026
Week 35Monday, August 24, 2026Sunday, August 30, 2026
Week 36Monday, August 31, 2026Sunday, September 6, 2026
Week 37Monday, September 7, 2026Sunday, September 13, 2026
Week 38Monday, September 14, 2026Sunday, September 20, 2026
Week 39Monday, September 21, 2026Sunday, September 27, 2026
Week 40Monday, September 28, 2026Sunday, October 4, 2026
Week 41Monday, October 5, 2026Sunday, October 11, 2026
Week 42Monday, October 12, 2026Sunday, October 18, 2026
Week 43Monday, October 19, 2026Sunday, October 25, 2026
Week 44Monday, October 26, 2026Sunday, November 1, 2026
Week 45Monday, November 2, 2026Sunday, November 8, 2026
Week 46Monday, November 9, 2026Sunday, November 15, 2026
Week 47Monday, November 16, 2026Sunday, November 22, 2026
Week 48Monday, November 23, 2026Sunday, November 29, 2026
Week 49Monday, November 30, 2026Sunday, December 6, 2026
Week 50Monday, December 7, 2026Sunday, December 13, 2026
Week 51Monday, December 14, 2026Sunday, December 20, 2026
Week 52Monday, December 21, 2026Sunday, December 27, 2026
Week 53Monday, December 28, 2026Sunday, January 3, 2027

About Weeks by Year

This tool displays all weeks for any year according to the ISO-8601 standard. Each week shows its week number, start date (Monday), and end date (Sunday). This is useful for project planning, scheduling, and understanding how weeks are distributed throughout the year.

Related tools: Check out our Current Week Number calculator to find the current week, or use our Days by Year tool to view all days for a specific year. For more date utilities, visit our Tools page.

Frequently Asked Questions

How do I view all weeks for a specific year?

Select a year from the dropdown menu or enter a year in the input field. The tool will automatically display all weeks for that year with their start and end dates according to the ISO-8601 standard.

What is the ISO-8601 week standard?

ISO-8601 defines weeks as starting on Monday and ending on Sunday. Week 1 is the first week of the year that contains at least 4 days. This standard is widely used in business and international date formatting.

How many weeks are in a year?

Most years have 52 weeks, but some years have 53 weeks according to the ISO-8601 standard. This depends on how the year starts and whether it contains 53 complete weeks.

Related Guides

Week Numbers

Current week number (ISO-8601)

Day Numbers

Current day of year

Days by Year

View all days for a year