A medium pizza is usually about 12 inches (30 cm) in diameter and cut into around 8 slices, serving roughly 2–3 people with average appetites.

Typical medium pizza size

  • Diameter: about 12 inches / 30 cm.
  • Slices: commonly 8 slices.
  • Servings: often enough for 2–3 people, depending on how hungry everyone is.

If you like visuals, imagine a plate that almost fills a standard home oven rack from side to side—that’s roughly the footprint of a medium pizza.

Note: Sizes can vary a bit by restaurant, so some places may go slightly smaller or larger, but 12 inches is the most common “medium.”

TL;DR: A “medium” pizza is usually a 12-inch pie, cut into 8 slices, feeding about 2–3 people.

Information gathered from public forums or data available on the internet and portrayed here.