Week Number Calendar
Pick a date on the calendar to see its ISO week number, the start and end dates of that week, the day of the year, the quarter and the number of weeks left in the year. Weeks start on Monday.
Work out dates easily with the Week Calendar.
Important note: The information on this screen is provided only to give you a preliminary idea for your planning. Because of variables in operational processes, please ask our expert team to confirm any final, binding cost or volume calculation. Our company cannot be held legally responsible for actions taken on the basis of these draft calculations.
Frequently asked questions
What is an ISO week number?
ISO 8601 numbers the weeks of a year, starting with the week that contains the year's first Thursday. Weeks run from Monday to Sunday.
Why is the week number useful in shipping?
Loading and sailing plans are often expressed by week number. The tool tells you which week a date falls in.
Can a date near New Year belong to another year's week?
Yes. Under ISO 8601 the first days of January can belong to the last week of the previous year, and the last days of December to week 1 of the next. The result shows the year of the week.