ChickenCoopCalc

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Duck Coop Size Calculator

Quick answer: Penn State Extension and University of Maryland Extension set ducks at 3 sq ft of house floor and 15 sq ft of outside run per bird, and Poultry Extension (extension.org) allows 5 sq ft indoors per adult duck. Multiply by your flock: 10 ducks need 30 to 50 sq ft inside and 150 sq ft of run.

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Size your duck house

Per-duck figures, and 10 ducks

FigurePer duck10 ducksSource
House floor, minimum3 sq ft30 sq ftPenn State Extension; University of Maryland Extension
House floor, indoor figure5 sq ft50 sq ftPoultry Extension (extension.org)
Outside run15 sq ft150 sq ftPenn State Extension; University of Maryland Extension

The 10-duck column is the per-duck figure times 10. extension.org does not publish an outdoor number.

Which figure to build to

The 3 sq ft line is a minimum from the Penn State and Maryland tables. The 5 sq ft line from extension.org is the larger indoor allowance, the same figure the duck space page leads with. Building between the two is still above the minimum; building to 5 sq ft meets both. The run figure is 15 sq ft per duck from both extension tables.

Worked flock sizes: 4 ducks and 6 ducks. All poultry figures side by side are in the poultry space requirements data. For chickens, see coop size by flock and how big a chicken run should be.

Compiled with AI assistance from the sources below. Spot an error? Email jpanasuk@gmail.com.

Sources