What week of the year is it?

This single serving app calculates the week of the year and day of the year for the current day and for any day which you specify. Select a date from the calendar to see this in action.

Please note that this site uses the ISO week date system. This is used primarily for financial and government timekeeping. For more information, please refer to this Wikipedia article.

Current date info
Today's date is:Saturday, December 16th, 2017
Week of the year:50 of 52
Day of the year:350 of 365

Choose a date to find out what week number it's in


Selected date info
Chosen Date:
Week of the year:
Day of the year: