How do I boost MacBook brightness past 100%?

Your Mac isn't broken. The truth is that macOS holds back half the brightness, and an app like MacBrightness opens it. On the 14"/16" MacBook Pro (M-series Pro/Max), the panel reaches about 1,600 nits. By default, macOS caps everyday content near 500 and saves the top for HDR. MacBrightness unlocks that reserve system-wide, on the same keys, with no new shortcuts and no low-level hacks. It's the brightness you thought you paid for, readable in a bright room or outdoors. Try it free first: Splitscreen Mode shows the difference before you pay $5 one-time. MacBook Air, Intel, and M1 13" Macs are already at true max.