Mac storage basics · Checking your storage
Can I upgrade the internal SSD in my Mac?
Short answer: Not on Apple silicon Macs — internal storage can't be upgraded by the owner. Extra room comes from an external SSD or cloud storage.
On Apple silicon Macs the internal storage isn't something you can upgrade yourself, so the capacity you buy is the capacity the Mac keeps. Adding room afterwards means using external storage, cloud storage, or a mix.
A fast external SSD is the closest thing to a bigger internal drive: big apps, libraries and project folders can live there while your Mac keeps working as before. Storage Studio is built around exactly that — it moves big folders and apps to an external drive and leaves a link at the original place so they still open normally. See moving folders and choosing an external drive.