Excel WEEKDAY Function

This tutorial demonstrates how to use the Excel WEEKDAY Function in Excel to get the day of the week (1-7).

WEEKDAY Main Function

WEEKDAY Function Overview

The WEEKDAY Function Returns the day of the week as a number (1-7).

To use the WEEKDAY Excel Worksheet Function, Select cell and Type:

weekday formula syntax

(Notice how the formula input appear)

WEEKDAY Function syntax and Inputs:

serial_number – The date in Excel serial number format or entered as a date with quotations (“s) surround the date. Example: You can not enter 11/12/2015 directly into the cell. Instead you need to enter “11/12/2015” or you would need to use the corresponding serial number: 42320. Alternatively, you can reference a cell with the date 11/12/2015 entered. Excel automatically converts dates stored in cells into serial format (unless the date is entered as text).

return_type – OPTIONAL. A number indicating which day of the week is considered the first day of the week. 1 (Default) for Sunday, 2 for Monday, etc.


Calculate Day of Week From a Date

The WEEKDAY Function returns a number corresponding to the day of the week:

WEEKDAY FunctionBy adding the CHOOSE Function you can return the name of the day of the week:


Change Start of Week

By default, weeks start on Sundays, instead you change the start of the week to any day. Here we use 2 to change to week start to Monday instead of Sunday:

WEEK Start on Monday

WEEKDAY in Google Sheets

The WEEKDAY Function works exactly the same in Google Sheets as in Excel:

WEEKDAY Google sheet

WEEKDAY Examples in VBA

You can also use the WEEKDAY function in VBA. Type:
For the function arguments (serial_number, etc.), you can either enter them directly into the function, or define variables to use instead.

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