Calculator for ROI and Cost Reductions? I don't know coding


So I want to create an interactive calculator that will show ROI and cost reduction by upgrading products for my company website. I have a great setup in excel, but my coding knowledge is very limited. Are there any recommendations for other sites that could build a calculator like this to embed on a landing page on the Hubspot COS, or ways I could accomplish this? Is this even the right forum to ask this?