How Big Should Your Chicken Coop Be?
Size your coop and run correctly for your flock — the #1 way to prevent pecking, stress, and disease.
Field tool
Coop Size Guide
How much space does your flock actually need? Set your birds and get coop area, run area, roost length, and nesting boxes.
Coop floor24 sq ft2.2 m²
Run area60 sq ft5.6 m²
Roost length48 in122 cm
Nesting boxes21 per 3–4 hens
Give more space, never less — crowding drives pecking, disease, and mess. Bantams need less; large or heavy breeds need more.
Prefer to buy rather than build?
If your numbers point to a bigger coop than you want to build, these prebuilt options match common flock sizes.