I looked up migrating accounts, but my question is:
If you migrate your account, will your minecraft worlds be backed up on the internet, and allow you to use your world when you log in your account on a different computer?
If you want to migrate your worlds, you can do it yourself:
Open windows explorer and go to "C:\Users\YOURUSER\AppData\Roaming\.minecraft\saves". Substitute YOURUSER with the name of your user account on the PC (not your minecraft username). Copy all of the folders in there to a memory stick, and copy them into the same directory on the other computer. You can now play on your old worlds on a new computer.
NOTE: This is taking copies of the world, so if you make changes in one, the other will not be changed.
I looked up migrating accounts, but my question is:
If you migrate your account, will your minecraft worlds be backed up on the internet, and allow you to use your world when you log in your account on a different computer?
Unfortunately not, all Minecraft worlds are stored locally.
You could store your worlds in some kind of cloud storage and then you could access them from different computers.
If you want to migrate your worlds, you can do it yourself:
Open windows explorer and go to "C:\Users\YOURUSER\AppData\Roaming\.minecraft\saves". Substitute YOURUSER with the name of your user account on the PC (not your minecraft username). Copy all of the folders in there to a memory stick, and copy them into the same directory on the other computer. You can now play on your old worlds on a new computer.
NOTE: This is taking copies of the world, so if you make changes in one, the other will not be changed.
Check out my Youtube channel, where I build a theme park in vanilla Minecraft!
https://www.youtube.com/playlist?list=PLeCiIIOoWhe-mq3nYd_nXXrKw9MkjnUU7