Chicken coop size calculator
Plan about 2 to 4 sq ft of coop and 8 to 15 sq ft of run per hen. Set your flock below to get exact square footage, roost and nesting-box counts, and the right coop size for your birds.
Curious what your flock will produce? Try the egg calculator, or check whether your yard is ready with the is-my-yard-coop-ready quiz.
How the sizing works
How do you calculate chicken coop size?
Multiply your flock by about 2–4 sq ft of coop space per bird and 8–15 sq ft of run per bird. So 6 standard hens need roughly 18 sq ft of coop and a 72 sq ft run. Bantams need less; free-ranging flocks need less run.
How much run space per chicken?
Plan 8–15 sq ft of run per hen if they don't free-range, or about half that if they get regular time out. More space means less pecking and healthier birds.
Ready to keep your flock safe?
Tell us about your animals and your land. We'll design a coop built to last, on-site, just for you.