It’s not really done but I made a little download time calculator. If you punch in your download size in GB and then your download speed in MB, it’ll tell you roughly how long it’ll take to download.
I used MB for download as I think that’s a pretty common standard for home internet. I used GB because I usually want to know how long it’ll take to download something on Xbox.
I’ll add in a few things but it’s a neat little tool. Build the things that are useful to you, I suppose.