Free Chicken & Duck Coop Size Calculator
FREE PLANNING TOOL
Coop Size Calculator
Not sure how much space your chickens or ducks actually need? Use the free FlockYard Chicken & Duck Coop Size Calculator to quickly estimate the indoor coop space and outdoor run space your flock may need.
Select your bird type, enter your flock size, and choose the relevant options below. The calculator will generate a practical planning estimate you can use when designing a new coop, expanding an existing setup, or deciding how many birds your current space can reasonably accommodate.
How this estimate is calculated
The calculator adjusts baseline space by species, adult body size, daytime access, and your optional planning margin. Results are rounded upward so the displayed footprint does not fall below the calculated area. Duck housing excludes roosts because domestic ducks generally sleep on the floor.
MAKE THE RESULT USEFUL
Plan a coop that works in real life
A square-foot estimate is only the beginning. Use the result alongside your site conditions, flock temperament, weather, and daily management routine.
Separate indoor and outdoor space
The coop protects birds at night and during severe weather. The run provides room for movement, scratching, foraging, bathing, and normal social behavior.
Plan for your hardest season
A setup that feels spacious in summer may become crowded during prolonged rain, snow, heat, or predator restrictions. Use the optional margin when birds may spend more time enclosed.
Account for different species
Chickens need usable roost length and elevated nest boxes. Ducks generally sleep and nest at floor level, create more moisture, and benefit from dry bedding and good drainage.