Excel WEEKDAY Function

Summary

The Excel WEEKDAY takes a date and returns a number between 1-7 representing the day of week. By default, WEEKDAY returns 1 for Sunday and 7 for Saturday. You can use the WEEKDAY function inside other formulas to check the day of week and react as needed.

Purpose

Get the day of the week as a number

Return value

A number between 0 and 7.

Syntax

=WEEKDAY (serial_number, [return_type])

Arguments

serial_number - The date for which you want to get the day of week.
return_type - [optional] A number 1-3 representing day of week mapping scheme. Default is 1.

Usage notes

return_type specifies the scheme used to map the day of week. The default is 1. The available mapping schemes are as follows:

return_type 1: Numbers 1-7 (Sunday through Saturday) - default
return_type 2: Numbers 1-7 (Monday through Sunday)
return_type 3: Numbers 0-6 (Monday through Sunday)