Year calendar

Week Number 2025

Calculate and view week numbers for the year or a specific month. Select different standards to see how they compare.

Week numbers

2025 Calendar

ISO 8601 standard: Weeks start on Monday, and the first week of the year contains the first Thursday.

December 2024

Week 5330 Dec 6 Jan

January 2025

Week 16 Jan 13 Jan
Week 213 Jan 20 Jan
Week 320 Jan 27 Jan
Week 427 Jan 3 Feb

February 2025

Week 53 Feb 10 Feb
Week 610 Feb 17 Feb
Week 717 Feb 24 Feb
Week 824 Feb 3 Mar

March 2025

Week 93 Mar 10 Mar
Week 1010 Mar 17 Mar
Week 1117 Mar 24 Mar
Week 1224 Mar 31 Mar
Week 1331 Mar 7 Apr

April 2025

Week 147 Apr 14 Apr
Week 1514 Apr 21 Apr
Week 1621 Apr 28 Apr
Week 1728 Apr 5 May

May 2025

Week 185 May 12 May
Week 1912 May 19 May
Week 2019 May 26 May
Week 2126 May 2 June

June 2025

Week 222 June 9 June
Week 239 June 16 June
Week 2416 June 23 June
Week 2523 June 30 June
Week 2630 June 7 July

July 2025

Week 277 July 14 July
Week 2814 July 21 July
Week 2921 July 28 July
Week 3028 July 4 Aug

August 2025

Week 314 Aug 11 Aug
Week 3211 Aug 18 Aug
Week 3318 Aug 25 Aug
Week 3425 Aug 1 Sept

September 2025

Week 351 Sept 8 Sept
Week 368 Sept 15 Sept
Week 3715 Sept 22 Sept
Week 3822 Sept 29 Sept
Week 3929 Sept 6 Oct

October 2025

Week 406 Oct 13 Oct
Week 4113 Oct 20 Oct
Week 4220 Oct 27 Oct
Week 4327 Oct 3 Nov

November 2025

Week 443 Nov 10 Nov
Week 4510 Nov 17 Nov
Week 4617 Nov 24 Nov
Week 4724 Nov 1 Dec

December 2025

Week 481 Dec 8 Dec
Week 498 Dec 15 Dec
Week 5015 Dec 22 Dec
Week 5122 Dec 29 Dec
Week 5229 Dec 5 Jan

Guide

2025 Calendar Guide

Current Week Number 2025

What week are we in 2025?

2025 has ended.

Week numbering follows the ISO 8601 standard, where Week 1 is the first week containing at least 4 days of January.

2025 Week Numbers and Financial Year

Standard Calendar Year 2025

The 2025 calendar year contains 53 weeks and 1 days.

Financial Year Week Numbers

Financial year week numbering varies by country:

  • UK Financial Year 2025-2026: April 6, 2025 to April 5, 2026
  • US Federal Fiscal Year 2025: October 1, 2024 to September 30, 2025
  • Australian Financial Year 2025: July 1, 2024 to June 30, 2025

How Many Weeks in 2025?

2025 contains exactly 53 weeks and 1 extra day. Since 2025 is not a leap year:

  • Total days: 365 days
  • Complete weeks: 53 weeks (371 days)
  • Remaining days: 1 days

Weeks in a Year 2025 Breakdown

  • January 2025: 5 weeks + 3 days
  • February 2025: 5 weeks
  • March 2025: 6 weeks + 3 days
  • April 2025: 5 weeks + 2 days
  • May 2025: 5 weeks + 3 days
  • June 2025: 6 weeks + 2 days
  • July 2025: 5 weeks + 3 days
  • August 2025: 5 weeks + 3 days
  • September 2025: 5 weeks + 2 days
  • October 2025: 5 weeks + 3 days
  • November 2025: 5 weeks + 2 days
  • December 2025: 5 weeks + 3 days

5 Week Months in 2025

Which Months Have Five Weeks in 2025?

Months with 5 weeks in 2025 (when counting Monday-to-Monday weeks):

  • 1. March 2025 - 5 Mondays (3, 10, 17, 24, 31)
  • 2. June 2025 - 5 Mondays (2, 9, 16, 23, 30)
  • 3. September 2025 - 5 Mondays (1, 8, 15, 22, 29)
  • 4. December 2025 - 5 Mondays (1, 8, 15, 22, 29)

How Many Mondays in 2025?

2025 contains 52 Mondays because:

  • January 1, 2025 falls on a Wednesday
  • Most days of the week appear 52 times in 2025

2025 Calendar Facts and Statistics

Key 2025 Calendar Information

  • Leap Year: No (365 days)
  • Starts on: Wednesday
  • Ends on: Wednesday
  • Total Weeks: 53 weeks + 1 days
  • Weekdays: 261 days
  • Weekend days: 104 days

Business Week Calculations 2025

Total business days: Approximately 261 days (excluding weekends)

Frequently Asked Questions

What week number is it right now in 2025?

2025 has ended. The current week number applies to the current year.

How are week numbers calculated?

Week numbers follow ISO 8601 standard:

  • Week 1 contains the first Thursday of January
  • Weeks start on Monday
  • If January 1 falls on Friday, Saturday, or Sunday, it belongs to the previous year's last week

Why does 2025 have 52 Mondays?

2025 follows the standard pattern with 52 Mondays since it doesn't start on a Monday.

Do all countries use the same week numbering system?

No, some countries use different systems:

  • ISO 8601 (most common): Week starts Monday
  • US system: Week starts Sunday
  • Middle East: Week starts Saturday

Reference

Week numbering standards used on this page

Week numbers above can be switched between three standards. Learn how each one calculates weeks: