Summary

To pad week numbers (or any number) with zeros using a formula, you can use the TEXT function.

In the example show, D5 contains this formula:

=TEXT(WEEKNUM(B5,21),"00")

Which returns the string "07".

Generic formula

=TEXT(WEEKNUM(date,type),"00")

Explanation 

The TEXT function can apply number formats of any kind, including currency, date, percentage, etc. By applying a number format like "00", "000", "0000", you can "pad" numbers with as many zeros as you like. Zeros will only be added where needed.

Number format only

The TEXT function converts numbers to text as a normal step in applying the number format.

If you are concatenating (joining) the result to another text string, this is fine, but if you just want to apply visual padding to a free-standing number set of numbers, you can apply a custom number format without using a formula.

Related formulas

Excel formula: Get week number from date

Get week number from date

The WEEKNUM function takes a date and returns a week number (1-54) that corresponds to the week of year. The WEEKNUM function starts counting with the week that contains January 1. WEEKNUM takes two arguments: a date , and (optionally) return_type , which controls the scheme used to calculate the...

Related functions

Excel TEXT function

TEXT Function

The Excel TEXT function returns a number formatted as text. This makes it easy to embed a formatted number (e.g., dates, times, currencies, percentages, fractions, etc.) in a text string with the number format of your choice.
Excel WEEKNUM function

WEEKNUM Function

The Excel WEEKNUM function takes a date and returns a week number (1-54) that corresponds to the week of year. The WEEKNUM function starts counting on the week that contains January 1. By default, weeks begin on Sunday, but this can be changed.
Dave Bruns Profile Picture

AuthorMicrosoft Most Valuable Professional Award

Dave Bruns

Hi - I'm Dave Bruns, and I run Exceljet with my wife, Lisa. Our goal is to help you work faster in Excel. We create short videos, and clear examples of formulas, functions, pivot tables, conditional formatting, and charts.

Formulas

Functions