Chicken Coop Size Calculator
Recommended coop and run size for your flock.
Enter your values
ⓘ Live results
Results
- Coop floor space needed
- 21 sq ft
- Run space needed
- 54 sq ft
- Nesting boxes needed
- 2
- Roost bar length (8-10 in/bird)
- 54 in
Quick answer
Standard guidance is 3-4 sq ft of coop space and 8-10 sq ft of run space per standard-size chicken.
coop area = chickens x 3.5 sq ft; run area = chickens x 9 sq ft; nesting boxes = chickens / 4
How to use the Chicken Coop Size Calculator
- 1Enter your flock size and whether you keep standard or bantam breeds.
- 2Standard guidance is about 3-4 sq ft of coop space and 8-10 sq ft of outdoor run space per bird.
- 3Add one nesting box for every 4 hens and enough roost bar length for all birds to perch comfortably.
Worked example
Using the values the calculator loads with:
Inputs
- Number of chickens6
- Breed sizeStandard breed
Results
- Coop floor space needed21 sq ft
- Run space needed54 sq ft
- Nesting boxes needed2
- Roost bar length (8-10 in/bird)54 in
Frequently asked questions
Can chickens have less space if free-ranged?
Yes, coop space can be reduced somewhat if birds free-range during the day, but overnight coop space still matters for safety and comfort.
How many nesting boxes do I really need?
One box per 4-5 hens is plenty since hens often share favorite boxes even if more are available.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.