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Calculate the perfect chicken coop size for your flock. Use our free Chicken Coop Size Calculator to find the ideal space in feet or meters instantly.
Raising chickens in your backyard or on a farm? One of the most important decisions you'll make is how big your chicken coop should be. Whether you have 4 chickens or 1000, giving them the right amount of space ensures their health, happiness, and egg-laying productivity. That's why we created the Chicken Coop Size Calculator a free tool designed to help you determine the perfect size of a coop and run based on the number of chickens you plan to keep.
Before you build or buy a coop, it’s essential to understand how much space your flock needs. Chickens require two main areas: the coop (indoor space) where they sleep and lay eggs, and the run (outdoor space) where they roam during the day.
The general rule of thumb is:
So, if you have 10 chickens, you’ll need at least 40 square feet of coop space and 100 square feet of run space.
To manually calculate your chicken coop size in square feet, use the following formulas:
Coop Space = Number of Chickens × 4
Run Space = Number of Chickens × 10
If you’re working in meters, use this conversion:
1 square foot = 0.092903 square meters
So, if you’re calculating for 1000 chickens:
Chicken Coop Size for 4 Chickens
Coop: 4 × 4 = 16 square feet
Run: 4 × 10 = 40 square feet
Chicken Run Size for 20 Chickens
Coop: 20 × 4 = 80 square feet
Run: 20 × 10 = 200 square feet
How Many Chickens in a 10x10 Coop?
10x10 = 100 square feet
100 ÷ 4 = 25 chickens (indoor space only)
This calculator works for both small backyard flocks and large-scale poultry houses. From 2 to 1000 chickens, we’ve got your measurements covered.
Final Verdict
Planning the right chicken coop size isn’t just about comfort it’s about safety, hygiene, and productivity. Whether you're looking for small chicken coop plans or designing a large chicken house, our Chicken Coop Size Calculator gives you fast, reliable measurements. This ensures your chickens stay healthy, active, and egg-productive.
From 4 to 1000 chickens, always remember: happy hens need space to thrive.
You’ll need 16 square feet of coop space and 40 square feet of run space for 4 chickens.
Yes, a 10x10 coop gives 100 square feet, enough for up to 25 chickens.
You need at least 200 square feet of run space.
At least 4000 square feet (about 371.6 square meters) of coop space and 10,000 square feet (about 929 square meters) of run space.
Overcrowding leads to stress, diseases, feather pecking, and reduced egg production.