Freeing up space · Where your space went
How do I find out where my disk space went over a particular period?
Short answer: Open More → Where did my space go?, pick a period or drag across the drop on the chart, and Storage Studio breaks down what grew, what was freed, what it did itself, held space, and what it couldn't account for.
Open More ••• → Where did my space go?… (it's the same screen as the storage chart). Under the chart, choose a period — or drag across the drop you're curious about — and Storage Studio breaks down that exact window:
- what grew,
- what was freed,
- what Storage Studio itself did,
- space held by your Mac's automatic backups,
- and how much it couldn't account for.
Figures are never scaled to make the total come out neatly; anything unexplained is its own line. If the period reaches back before something was being measured, it says so at the top. See the unaccounted-for line.