ChickenCoopCalc

Home / Questions / How much space do ducks need?

How much space do ducks need?

Per-duck square feet from the same extension pages as the six-duck house. The hen calculator on this site is a different rate.

Built by Jeremy Panasuk. Published October 6, 2026.

Quick answer: eXtension lists 5 sq ft indoors per adult duck. Penn State Extension and Maryland Extension list a lower indoor minimum of 3 sq ft and a run of 15 sq ft per duck. eXtension does not publish an outdoor number and says the larger the run, the better. Six ducks at those rates are on the 6-duck house page: 30 sq ft, 18 sq ft, and 90 sq ft.

The three published figures

FigurePer adult duckSource
Indoor space5 sq fteXtension
Indoor minimum3 sq ftPenn State Extension and Maryland Extension
Run minimum15 sq ftPenn State Extension and Maryland Extension
eXtension outdoor figurenone publishedThe same eXtension page says the larger the run, the better.

Hen pages on this site use 4 sq ft indoors and 10 sq ft of run. That 4 sits in the eXtension chicken range. It is not the duck row. eXtension also says waterfowl droppings are more than 90 percent moisture, so the floor stays wet even when the square footage is right. If the climate does not allow year-round outdoor use, that page says the interior requirement increases, and it does not say by how many feet. Geese are about 3 times the duck allowance on that page, and this page does not apply that multiple to ducks.

Worked example: 6 adult ducks

A 5 × 6 ft floor is 30 sq ft. A 6 × 15 ft run is 90 sq ft. Those are examples of the products, not required shapes. The full six-duck write-up, including the footprint note, stays on the 6-duck page.

Run your own count

The hen line calls calcCoopSize so you can see the mismatch. It is not the duck answer.

How to size it

  1. Indoor, eXtension. Multiply the duck count by 5 sq ft.
  2. Indoor minimum. Multiply the same count by 3 sq ft. Penn State and Maryland list that minimum. It is not a substitute for the 5 sq ft line.
  3. Run minimum. Multiply by 15 sq ft. Penn State and Maryland list that run. eXtension still says the larger the run, the better, and does not publish a second outdoor number.
  4. Hen check. Run calcCoopSize on the same count and read it as the hen function. Do not build the duck house from that coop or run figure.

Common mistake

Typing ducks into the chicken coop calculator and building the 4 and 10 result. Six ducks would come back as 24 sq ft and 60 sq ft. The duck products are 30, 18, and 90. The other mistake is treating the 3 sq ft indoor minimum as the plan and skipping the 5 sq ft eXtension line.

Limits

These pages do not publish a reduced run for ducks that spend the day on a pond, and they do not publish a perch length for ducks. Do not borrow a chicken roost. A house that cannot be kept dry is a different problem from square footage: eXtension puts waterfowl droppings above 90 percent moisture.

FAQ

How much indoor space does a duck need?

eXtension lists 5 sq ft indoors per adult duck. Penn State and Maryland list a lower indoor minimum of 3 sq ft. Six ducks are 30 sq ft at the 5 sq ft rate and 18 sq ft at the 3 sq ft minimum. The 3 sq ft row is the table minimum, not a reason to ignore the 5 sq ft line.

How big should a duck run be?

Penn State and Maryland list 15 sq ft of run per duck. eXtension does not publish an outdoor number and says the larger the run, the better. Six ducks at 15 sq ft are 90 sq ft of run.

Can I use the chicken coop calculator for ducks?

No. calcCoopSize is the hen function: 4 sq ft indoors and 10 sq ft of run for a standard bird, or 2 and 8 for a bantam. Those are not the duck rates on this page. The widget prints the hen result only so you can see the mismatch.

Related: chicken coop calculator (hens), duck house for 6 ducks, turkey space.

Search Amazon for a duck house

Affiliate disclosure: as an Amazon Associate, we earn from qualifying purchases — at no cost to you.

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

Sources