1 day ago · See here which week number this week has. On this website we've also listed annual and monthly calendars including 2026, 2027 and 2028.

What Week Is It Today?

Sunday is the first day of week and Saturday if the last day of the week. The first week of the year is the week that contains January 4th, first 4 days of the year.

1 day ago · Check the current week number and convert between dates and week numbers on Weeknumber.com.

Jan 5, 2026 · The rule of thumb to calculate the week number is based on the number of months from January to the last month multiplied by 4 plus the number of weeks in the current month.

2 days ago · See what week of the year it is along our week number calendar. See the current week number to find out how far into the year we are.

Week number according to the ISO-8601 standard, weeks starting on Monday. The first week of the year is the week that contains that year's first Thursday (='First 4-day week').