Chicken Coop Size Calculator

Chickens need enough coop space to stay healthy and avoid pecking-order stress. Enter your flock details below and get minimum square footage for both the indoor coop and outdoor run, plus layout suggestions.

Your Flock

Coop Size Recommendations

INDOOR COOP
sq ft minimum
OUTDOOR RUN
sq ft minimum
ROOST BARS
linear inches
NESTING BOXES
boxes needed
DimensionYour CoopExample Footprint

Overcrowding is the leading cause of feather-pecking, disease spread, and reduced egg production. Always build bigger than the minimum — you'll almost certainly add more birds. Cold-climate coops need extra insulation but not extra heating; healthy chickens generate enough body heat in a properly sized space.