[quote=@FacePunch]
So I'm trying to calculate the distance between myself and [@Durandal].


The coordinates:
560, 390, 180
640, 400, 280

My answer, after plugging them into a website:
128 (and a lot of decimals)

Now, here's my question: How do I convert this into lightyears? I assume 128 is the number of pixels between myself and Durandal. With each pixel representing 100 lightyears, that would mean we're 12,800 lightyears apart? Did I do that correctly? I'm mathematically inept.
[/quote]

You did that correctly. It's the answer I got.