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How many weeks are in 2026?

53
ISO weeks in 2026
A rare 53-week year

Key facts

Total ISO weeks
53
Week 1 starts
Monday, December 29, 2025
Week 53 ends
Sunday, January 3, 2027
Leap year
No (365 days)

All weeks

WkMondaySundayISO
W1Monday, December 29, 2025Sunday, January 4, 20262026-W01
W2Monday, January 5, 2026Sunday, January 11, 20262026-W02
W3Monday, January 12, 2026Sunday, January 18, 20262026-W03
W4Monday, January 19, 2026Sunday, January 25, 20262026-W04
W5Monday, January 26, 2026Sunday, February 1, 20262026-W05
W6Monday, February 2, 2026Sunday, February 8, 20262026-W06
W7Monday, February 9, 2026Sunday, February 15, 20262026-W07
W8Monday, February 16, 2026Sunday, February 22, 20262026-W08
W9Monday, February 23, 2026Sunday, March 1, 20262026-W09
W10Monday, March 2, 2026Sunday, March 8, 20262026-W10
W11Monday, March 9, 2026Sunday, March 15, 20262026-W11
W12Monday, March 16, 2026Sunday, March 22, 20262026-W12
W13Monday, March 23, 2026Sunday, March 29, 20262026-W13
W14Monday, March 30, 2026Sunday, April 5, 20262026-W14
W15Monday, April 6, 2026Sunday, April 12, 20262026-W15
W16Monday, April 13, 2026Sunday, April 19, 20262026-W16
W17Monday, April 20, 2026Sunday, April 26, 20262026-W17
W18Monday, April 27, 2026Sunday, May 3, 20262026-W18
W19Monday, May 4, 2026Sunday, May 10, 20262026-W19
W20Monday, May 11, 2026Sunday, May 17, 20262026-W20
W21Monday, May 18, 2026Sunday, May 24, 20262026-W21
W22Monday, May 25, 2026Sunday, May 31, 20262026-W22
W23Monday, June 1, 2026Sunday, June 7, 20262026-W23
W24Monday, June 8, 2026Sunday, June 14, 20262026-W24
W25Monday, June 15, 2026Sunday, June 21, 20262026-W25
W26Monday, June 22, 2026Sunday, June 28, 20262026-W26
W27Monday, June 29, 2026Sunday, July 5, 20262026-W27
W28Monday, July 6, 2026Sunday, July 12, 20262026-W28
W29Monday, July 13, 2026Sunday, July 19, 20262026-W29
W30Monday, July 20, 2026Sunday, July 26, 20262026-W30
W31Monday, July 27, 2026Sunday, August 2, 20262026-W31
W32Monday, August 3, 2026Sunday, August 9, 20262026-W32
W33Monday, August 10, 2026Sunday, August 16, 20262026-W33
W34Monday, August 17, 2026Sunday, August 23, 20262026-W34
W35Monday, August 24, 2026Sunday, August 30, 20262026-W35
W36Monday, August 31, 2026Sunday, September 6, 20262026-W36
W37Monday, September 7, 2026Sunday, September 13, 20262026-W37
W38Monday, September 14, 2026Sunday, September 20, 20262026-W38
W39Monday, September 21, 2026Sunday, September 27, 20262026-W39
W40Monday, September 28, 2026Sunday, October 4, 20262026-W40
W41Monday, October 5, 2026Sunday, October 11, 20262026-W41
W42Monday, October 12, 2026Sunday, October 18, 20262026-W42
W43Monday, October 19, 2026Sunday, October 25, 20262026-W43
W44Monday, October 26, 2026Sunday, November 1, 20262026-W44
W45Monday, November 2, 2026Sunday, November 8, 20262026-W45
W46Monday, November 9, 2026Sunday, November 15, 20262026-W46
W47Monday, November 16, 2026Sunday, November 22, 20262026-W47
W48Monday, November 23, 2026Sunday, November 29, 20262026-W48
W49Monday, November 30, 2026Sunday, December 6, 20262026-W49
W50Monday, December 7, 2026Sunday, December 13, 20262026-W50
W51Monday, December 14, 2026Sunday, December 20, 20262026-W51
W52Monday, December 21, 2026Sunday, December 27, 20262026-W52
W53Monday, December 28, 2026Sunday, January 3, 20272026-W53

Frequently asked questions

How many weeks are in 2026?

2026 contains exactly 53 ISO 8601 weeks.

Why do some years have 53 weeks?

An ISO year has 53 weeks when its first Thursday falls on January 1 (or January 1–2 in a leap year). Recent: 2009, 2015, 2020, 2026, 2032.

Is 2026 a leap year?

2026 is not a leap year (365 days).

Related tools

2026 calendar2026 facts2026 day of yearHow many weeks in a year