Covert attached an excel calculator to an online calculator in php

I have built a calculator in Excel (attached). I would like to have this coded into my website. My site is built in wordpress. The spreadsheet has seven input fields, and six output fields. The input fields generate a table that uses the conditional function, some of the output fields use a lookup function to pull data from this table. It should be pretty simple for an experienced programmer /developer. There may be follow on work if successful. Many thanks,