Prepare for a lost or stolen Mac
Even if your Mac is lost or stolen, the entire disk stays encrypted, so no one can open the personal photos or documents stored on it without the password.
Encryption doesn't slow your Mac down
Modern Macs include dedicated encryption hardware, so you won't notice any meaningful slowdown in everyday use once FileVault is on.
Frequently Asked Questions
Does turning on FileVault slow down my Mac?
Modern Macs have dedicated encryption hardware built in, so there's little to no noticeable slowdown in everyday use.
How long does encryption take?
It depends on your disk size and how much data you have, but it runs in the background, so you can keep using your Mac while it's encrypting.