Size Space (Feet) Space (Squares) Tiny2½ by 2½ feet4 per square Small5 by 5 feet1 square Medium5 by 5 feet1 square Large10 by 10 feet4 squares (2 by 2) Huge15 by 15 feet9 squares (3 by 3) Gargantuan20 by 20 feet16 squares (4 by 4) Moving around Other Creatures During your move, you can pass through the space of an ally, a creature that has the Incapacitated condition (see “Rules Glossary”), a Tiny creature, or a creature that is two sizes larger or smaller than you. Another creature’s space is Difficult Terrain for you unless that creature is Tiny or your ally. You can’t willingly end a move in a space occupied by another creature. If you somehow end a turn in a space with another creature, you have the Prone condition (see “Rules Glossary”) unless you are Tiny or are of a larger size than the other creature.