A creature has a set size category depending on its width and height.

Creatures can be Tiny, Small, Medium, Large, Huge, or Massive. Most player races are Small or Medium.

Below is a table of how much space each size class controls in combat.

Size

Space

Example Creatures

Tiny

2.5 by 2.5 feet

A Squirrel, a Sprite

Small

5 by 5 feet

A Goblin, a Dog

Medium

5 by 5 feet

A Human, an Orc

Large

10 by 10 feet

A Horse, an Ogre

Huge

15 by 15 feet

A Hill Giant, a Wyvern

Massive

20 by 20 feet

A Dragon, an Ancient Giant