Paradis in Attack on Titan is usually estimated at about 723,000 km² inside the Walls , based on the wall distances shown in the anime. That makes it roughly the size of a large country, but not necessarily the full island, which some fan estimates place much larger.

What that means

  • The inside of the Walls is commonly calculated by treating it like a circle with a radius of about 480 km.
  • That gives an area of about 723,823 km².
  • Some discussions argue Paradis Island itself is bigger than the enclosed wall area, but the exact island size is not stated clearly in canon.

Simple takeaway

If you mean the land inside the Walls , it’s about 724 thousand square kilometers. If you mean the entire island , the anime-related estimates vary a lot, and the manga does not give a clean official number.