Simple DnD Coin Converter

This is a DnD coin converter tool. I was tired of having to open the book every time I went to a shop to see how my coins compare to shop prices. My partners in the campaign told me they also hate having to remember conversions, so I made an app for us to use. Figured throw it on here to hopefully help others This is a "finished" project, but I may update it to make it look nicer. 

If there is anything wrong leave it in the comments, and ill try to get it fixed quickly.