The iPhone 12 Pro Max measures about 6.33 inches tall, 3.07 inches wide, and 0.29 inches thick, with a 6.7‑inch diagonal display.

Physical size at a glance

  • Height: 6.33 inches (160.8 mm)
  • Width: 3.07 inches (78.1 mm)
  • Thickness: 0.29 inch (7.4 mm)
  • Weight: 8.03 oz (228 g)
  • Screen size (diagonal): 6.7 inches Super Retina XDR OLED

If you’re comparing to older big iPhones like the 11 Pro Max, it’s similarly tall and wide but with the more squared‑off sides, so it feels a bit more slab‑like in the hand.