Convert a Template to a Website

Australian based. Convert my excel spreadsheet to an online calculator. The calculator would be inserted into a web site that I have already created. It is golf handicap/score related. This is a hobby. If there's traction I shall pursue developing a mobile app for the calculator at another date, which would be commercial. All formulas already created, the speadsheet just needs to be converted to an online calculator so anyone can use it. Uploaded screenshot of the spreadsheet now.