I would like to put this formula in a spreadsheet that I am working on. I'm
working on a genealogy project and a formula would be extremely helpful.

I found this one on the internet for web pages:

HTML code for inserting Soundex Code Searchbox into your webpage
Copy the following to your clipboard and paste into your webpage:
<!-- ============================= BEGIN SOUNDEX FORM
================================= --
<form method=POST
action="http://resources.rootsweb.com/cgi-bin/soundexconverter"
Surname: <input type=TEXT name="surname"
<input type=SUBMIT name="get_soundex" value="Get Soundex Code"<p
</form
<!-- ============================== END SOUNDEX FORM
================================== --

Any assistance would be greatly appreciated.