Nesting Box Calculator
Enter your flock size to see how many nesting boxes you need, using the standard one-box-per-3-to-4-hens rule.
Nesting boxes needed2
Rule of thumb1 box per 3 to 4 hens
Nesting boxes by flock size
The rule is one box for every three to four hens, rounded up, with a minimum of one. Worked through for the flock sizes people ask about most:
- 3 chickens — 1 box
- 4 chickens — 1 box
- 5 chickens — 2 boxes
- 6 chickens — 2 boxes
- 10 chickens — 3 boxes
- 12 chickens — 3 boxes
- 20 chickens — 5 boxes
- 50 chickens — 13 boxes
Err upward if your flock is expanding, if you keep large breeds, or if you have a persistently broody hen who monopolises a box for weeks at a time. Erring downward is the more common mistake, and it shows up as cracked eggs and hens laying on the coop floor.
For box dimensions, mounting height, bedding and how to stop floor-laying, read how many nesting boxes per chicken. To size the coop those boxes go in, use the coop size calculator.
How we calculate it
Boxes = hens ÷ 4, rounded up, minimum 1.
Based on:
- One nesting box per 3 to 4 hens is the standard guideline (Poultry Extension)
- General housing and management guidance for backyard flocks (UGA Extension)
Figures are typical guidelines for planning. Your birds, breed, climate, and feed will vary.
Frequently asked questions
How many nesting boxes do I need for my chickens?
Use one nesting box for every 3 to 4 hens, with a minimum of one. Hens share boxes, so you rarely need one per bird.
What size should a nesting box be?
About 12 by 12 by 12 inches suits most standard breeds. Larger breeds like Orpingtons and Brahmas appreciate a bit more room.
Why do my hens all use the same box?
Hens prefer to lay where others have laid, so a few boxes always get more use. This is normal and not a sign you need more boxes.