Question 1

What week number is it right now in 2026?

Accepted Answer

The current ISO week number is highlighted at the top of this page. ISO week numbering (ISO 8601) starts on Monday and is the international standard used in business, logistics, and project management.

Question 2

How many weeks are there in 2026?

Accepted Answer

2026 has 53 ISO weeks. Most years have 52 weeks, but some years (called "long years") have 53 weeks. Check the full table above for all week numbers and their corresponding date ranges.

Question 3

What is ISO week numbering?

Accepted Answer

ISO 8601 week numbering is an international standard where weeks start on Monday. Week 1 is the week containing the first Thursday of the year (or equivalently, the week containing January 4th). This system is widely used in Europe, business, and international logistics.

Question 4

How do I find the week number for a specific date?

Accepted Answer

Scroll through our week numbers table to find your date. Each row shows the week number along with the Monday–Sunday date range. The current week is highlighted in blue for easy reference.

Semana	Período
1	28 de dez. – 3 de jan.
2	4 de jan. – 10 de jan.
3	11 de jan. – 17 de jan.
4	18 de jan. – 24 de jan.
5	25 de jan. – 31 de jan.
6	1 de fev. – 7 de fev.
7	8 de fev. – 14 de fev.
8	15 de fev. – 21 de fev.
9	22 de fev. – 28 de fev.
10Semana atual	1 de mar. – 7 de mar.
11	8 de mar. – 14 de mar.
12	15 de mar. – 21 de mar.
13	22 de mar. – 28 de mar.
14	29 de mar. – 4 de abr.
15	5 de abr. – 11 de abr.
16	12 de abr. – 18 de abr.
17	19 de abr. – 25 de abr.
18	26 de abr. – 2 de mai.
19	3 de mai. – 9 de mai.
20	10 de mai. – 16 de mai.
21	17 de mai. – 23 de mai.
22	24 de mai. – 30 de mai.
23	31 de mai. – 6 de jun.
24	7 de jun. – 13 de jun.
25	14 de jun. – 20 de jun.
26	21 de jun. – 27 de jun.
27	28 de jun. – 4 de jul.
28	5 de jul. – 11 de jul.
29	12 de jul. – 18 de jul.
30	19 de jul. – 25 de jul.
31	26 de jul. – 1 de ago.
32	2 de ago. – 8 de ago.
33	9 de ago. – 15 de ago.
34	16 de ago. – 22 de ago.
35	23 de ago. – 29 de ago.
36	30 de ago. – 5 de set.
37	6 de set. – 12 de set.
38	13 de set. – 19 de set.
39	20 de set. – 26 de set.
40	27 de set. – 3 de out.
41	4 de out. – 10 de out.
42	11 de out. – 17 de out.
43	18 de out. – 24 de out.
44	25 de out. – 31 de out.
45	1 de nov. – 7 de nov.
46	8 de nov. – 14 de nov.
47	15 de nov. – 21 de nov.
48	22 de nov. – 28 de nov.
49	29 de nov. – 5 de dez.
50	6 de dez. – 12 de dez.
51	13 de dez. – 19 de dez.
52	20 de dez. – 26 de dez.
53	27 de dez. – 2 de jan.

Números de semana 2026 .

Números de semana 2026 — Tabela completa