Litter Box Size Finder

Practical starting ranges

Use the 1.5x Length Rule

Measure your cat from nose to the base of the tail, then look for a box at least one and a half times that length. The cat should have room to enter, turn, dig, and posture normally.

• Measure the cat, not the room corner.
• Use interior dimensions.
• When unsure, choose the larger box.

Width and Entry Matter Too

A long but narrow box can still feel cramped. Side height also matters: high walls reduce scatter, but they can be hard for kittens, seniors, or cats with mobility issues.

• Check turning room.
• Choose lower entry for seniors or kittens.
• Use taller sides only if entry remains easy.

Covered Boxes Are Not Always Better

Covered boxes hide mess for humans, but some cats dislike the enclosed space or trapped odor. If your cat avoids a covered box, try a large uncovered option before blaming the litter.

• Prioritize cat comfort over furniture fit.
• Scoop often to control odor.
• Watch for avoidance or edge accidents.

Plan Multi-Cat Access

For multi-cat homes, box count and placement matter. The common starting rule is one box per cat plus one extra, with boxes in different useful locations.

• Avoid forcing cats to share one guarded spot.
• Place boxes where cats can access them easily.
• Keep boxes clean and predictable.