How long does a data migration between two Mac typically take?

If you are doing it from one device to another via Wifi and, depending on the total GB needing to be transferred, it can take days. Wifi is the worst choice. Could you not plug in your external hard drive with your backup and use that? That'll be much, much faster.

Hello Rene369,

Welcome to the Apple Support Communities. We understand you want to know about the length of the migration process and will explain.

It will depend on a number of factors including how the data is being migrated, how much data there is, and the hardware of both Mac computers. The best thing to do is not interrupt the process and let it complete as long as progress is being made.

Thanks, and enjoy your day!

You are welcome and good luck!