So i have a world on my laptop (mac) that i've put a lot of time into and own a faster and more upgraded desktop (also a mac) that i'd like to transfer the map over to, to avoid lag and any other issues like crashes and what not. I was wondering if any of you intelligent mindcrafters could help me out on how to access that map in file form, email it to myself or put it onto a thumb drive and put it into my desktop and play on it. I will be using the same mod pack on my desktop as my laptop, so there isn't any complicated issues involving losing certain mods or any of that. If you have the solution but for PC only i'd love to hear it, I'm sure i can figure out converting it. If you have any questions feel free to ask.