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Chicken Coop Size Calculator

Calculate coop size for your flock

Coop Size

24 sq ft

Run Size

60 sq ft

Eggs/Week

30

Coop Size

24

sq ft

Run Size

60

sq ft

Nest Boxes

2

Roosting

5 ft

Eggs/Week

30

Feed Requirements

Weekly Feed10.5 lbs

Space & Material Requirements

Coop Area24 sq ft
Run Area60 sq ft
Nest Boxes2
Roosting Space5

What You'll Need

Little Giant 3-Gallon Flat Back Bucket for Livestock

Little Giant 3-Gallon Flat Back Bucket for Livestock

$8-$144.6
View on Amazon
Harris Farms Poultry Drinker/Waterer 3.5 Gallon

Harris Farms Poultry Drinker/Waterer 3.5 Gallon

$15-$224.4
View on Amazon
Manna Pro Goat Mineral Supplement 8lb

Manna Pro Goat Mineral Supplement 8lb

$15-$224.5
View on Amazon
MidWest iCrate 42" Folding Metal Dog Crate

MidWest iCrate 42" Folding Metal Dog Crate

$50-$804.7
View on Amazon
KONG Classic Dog Toy Durable Natural Rubber

KONG Classic Dog Toy Durable Natural Rubber

$8-$124.7
View on Amazon
BARKBAY No Pull Dog Harness Front Clip Reflective

BARKBAY No Pull Dog Harness Front Clip Reflective

$15-$254.5
View on Amazon
Little Giant 3-Gallon Flat Back Bucket for Livestock

Little Giant 3-Gallon Flat Back Bucket for Livestock

$8-$144.6
View on Amazon
Harris Farms Poultry Drinker/Waterer 3.5 Gallon

Harris Farms Poultry Drinker/Waterer 3.5 Gallon

$15-$224.4
View on Amazon
Manna Pro Goat Mineral Supplement 8lb

Manna Pro Goat Mineral Supplement 8lb

$15-$224.5
View on Amazon
MidWest iCrate 42" Folding Metal Dog Crate

MidWest iCrate 42" Folding Metal Dog Crate

$50-$804.7
View on Amazon
KONG Classic Dog Toy Durable Natural Rubber

KONG Classic Dog Toy Durable Natural Rubber

$8-$124.7
View on Amazon
BARKBAY No Pull Dog Harness Front Clip Reflective

BARKBAY No Pull Dog Harness Front Clip Reflective

$15-$254.5
View on Amazon

As an Amazon Associate, we earn from qualifying purchases.

Example Calculations

16 Standard Chickens with Run

Inputs

Number of Chickens6
Chicken TypeStandard
Free RangeNo

Result

Coop Size24 sq ft
Run Size60 sq ft
Nest Boxes2
Roosting Space5.0 ft
Feed Per Week10.5 lbs
Eggs Per Week30

Coop = 6 x 4 = 24 sq ft. Run = 6 x 10 = 60 sq ft. Nest boxes = ceil(6/4) = 2. Roosting = (6 x 10) / 12 = 5.0 ft. Feed = 6 x 0.25 x 7 = 10.5 lbs/week. Eggs = 6 x 5 = 30/week.

212 Large Breed Chickens, Free Range

Inputs

Number of Chickens12
Chicken TypeLarge
Free RangeYes

Result

Coop Size72 sq ft
Run Size48 sq ft
Nest Boxes3
Roosting Space10.0 ft
Feed Per Week33.6 lbs
Eggs Per Week60

Coop = 12 x 6 = 72 sq ft. Run = 12 x 4 = 48 sq ft (free range reduces run). Nest boxes = ceil(12/4) = 3. Roosting = (12 x 10) / 12 = 10.0 ft. Feed = 12 x 0.4 x 7 = 33.6 lbs/week. Eggs = 12 x 5 = 60/week.

Frequently Asked Questions

Q

How much space does each chicken need?

Standard chickens need 4 square feet per bird inside the coop and 10 square feet per bird in the run. Bantams need less, large breeds need more.

  • Standard breeds (Rhode Island Red, Plymouth Rock): 4 sq ft coop + 10 sq ft run per bird
  • Bantams (Silkies, Sebrights): 2 sq ft coop + 8 sq ft run per bird
  • Large breeds (Brahmas, Jersey Giants): 6 sq ft coop + 15 sq ft run per bird
  • Overcrowding causes pecking, stress, and a 20–30% drop in egg production
  • In cold climates, add 1–2 extra sq ft per bird since they spend more time indoors
Breed SizeCoop (sq ft/bird)Run (sq ft/bird)Free Range Run
Bantam284
Standard4104
Large6154
Q

How many nest boxes do I need?

Plan for 1 nest box per 3-4 hens. Chickens often prefer to share the same box, so you may not need as many as you think.

  • Minimum 1 nest box per 3–4 hens; 6 hens need 2 boxes, 12 hens need 3
  • Standard nest box size: 12" × 12" × 12" for most breeds
  • Large breeds need 14" × 14" × 14" boxes
  • Mount boxes 18–24 inches off the floor, lower than the lowest roost
  • Line boxes with 2–3 inches of straw or pine shavings; change weekly
Q

Can I keep chickens without a run if they free range?

Yes, but you still need a secure coop for nighttime protection. Even free-range chickens benefit from some enclosed run space for days you can't let them out.

  • Free-range reduces run size needed to just 4 sq ft per bird (for bad-weather days)
  • Lock chickens in the coop from dusk to dawn — predators are most active at night
  • Use 1/2" hardware cloth (not chicken wire) to stop raccoons and weasels
  • Free-range hens eat 15–20% less feed due to foraging insects and greens
  • Fence at least 250 sq ft of yard per bird for true free-range foraging
Q

How much roosting space does each chicken need?

Allow 8-10 inches of roosting bar per standard chicken. Roosts should be at least 2 feet off the ground and higher than the nest boxes.

  • Standard chickens: 8–10 inches of roost bar per bird
  • Large breeds: 12–14 inches per bird on 2" × 4" lumber (wide side up)
  • Bantams: 6–8 inches per bird
  • Mount roosts at least 2 ft off the floor and 12–18 inches from the wall
  • Stagger multiple roosts at the same height — uneven heights cause pecking order fights

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Last Updated: Mar 26, 2026

This calculator is provided for informational and educational purposes only. Results are estimates and should not be considered professional financial, medical, legal, or other advice. Always consult a qualified professional before making important decisions. UseCalcPro is not responsible for any actions taken based on calculator results.

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