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Chapter 8: Tactical Rules / Movement and Position

Size and Space

Source Starfinder Core Rulebook pg. 255
Creatures come in different sizes and can occupy multiple squares. The square or squares a creature occupies are also referred to as the creature’s space. Occasionally objects are defined with these same size categories.

There are nine size categories, and each determines the specific amount of space a creature takes up. The size categories are Fine, Diminutive, Tiny, Small, Medium, Large, Huge, Gargantuan, and Colossal.

Fine, Diminutive, And Tiny

These creatures take up less than 1 square of space. This means that more than one such creature can fit into a single square. A Tiny creature typically occupies a space only 2-1/2 feet across, so four can fit into a single square. Up to 25 Diminutive creatures or 100 Fine creatures can fit into a single square.

Small And Medium

Most player characters are Small or Medium, and creatures of these size categories take up a single 5-foot square of space.

Large, Huge, Gargantuan, And Colossal

Creatures in these size categories take up more than 1 square of space. See Table 8–1: Creature Size on page 256 for more details.

Table 8-1: Creature Size

Size CategoryHeight or Length1Weight2SpaceNatural Reach (Tall3)Natural Reach (Long3)
Fine6 in. or less1/8 lb. or less1/2 ft.0 ft.0 ft.
Diminutive6 in.–1 ft.1/8–1 lb.1 ft.0 ft.0 ft.
Tiny1–2 ft.1–8 lbs.2-1/2 ft.0 ft.0 ft.
Small2–4 ft.8–60 lbs.5 ft.5 ft.5 ft.
Medium4–8 ft.60–500 lbs.5 ft.5 ft.5 ft.
Large8–16 ft.500 lbs.–2 tons10 ft.10 ft.5 ft.
Huge16–32 ft.2–16 tons15 ft.15 ft.10 ft.
Gargantuan32–64 ft.16–125 tons20 ft.20 ft.15 ft.
Colossal64 ft. or more125 tons or more30 ft.330 ft.20 ft.
1This means a biped’s height or a quadruped’s body length (nose to base of tail).
2These numbers assume that the creature is roughly as dense as a regular animal. A creature made of stone will weigh considerably more, and a gaseous creature will weigh much less.
3These values are typical for creatures of the indicated size. Some exceptions exist.