Chicken Coop Size Calculator
Calculate the minimum coop size for your flock based on chicken types and daily location preferences
Calculate Your Chicken Coop Size
Coop
Indoor most of day
10 sq ft / 4 sq ft
Run
Covered outdoor area
4 sq ft / 2 sq ft
Yard
Free-roam outdoors
3 sq ft / 1 sq ft
Run space during the day - Regular size / Bantam size per chicken
Standard-sized chickens (Rhode Island Red, Leghorn, etc.)
Smaller chickens (Silkie, Japanese Bantam, etc.) - ¼ to ⅔ size of regular
Chicken Coop Size Results
Space breakdown: Regular chickens: 0 sq ft (0 × 0 sq ft), Bantam chickens: 0 sq ft (0 × 0 sq ft)
Location: Run space during the day
Recommendation: Enter chicken quantities
Space Analysis
Example Calculation
Mixed Flock Example
Flock: 10 regular size chickens + 12 bantam size chickens
Location: Run space during the day
Space per chicken: 4 sq ft (regular) + 2 sq ft (bantam)
Calculation
Regular chickens: 10 × 4 sq ft = 40 sq ft
Bantam chickens: 12 × 2 sq ft = 24 sq ft
Total coop size needed: 40 + 24 = 64 sq ft
Space Requirements
Coop (Indoor)
10 sq ft / 4 sq ft per chicken
For chickens staying inside most of the day
Run (Covered)
4 sq ft / 2 sq ft per chicken
Roofed, fenced outdoor area
Yard (Free-roam)
3 sq ft / 1 sq ft per chicken
Free-range in your yard
Chicken Types
Regular Size
Standard-sized chickens
• Rhode Island Red
• Leghorn
• Plymouth Rock
• Orpington
Bantam Size
¼ to ⅔ size of regular chickens
• Silkie
• Japanese Bantam
• Serama
• Dutch Bantam
Coop Design Tips
Provide adequate ventilation but no drafts
Include nesting boxes (1 per 4-5 hens)
Add roosting bars 2-3 feet off ground
Ensure easy access for cleaning
Understanding Chicken Coop Sizing
Why Proper Sizing Matters
Providing adequate space for your chickens is essential for their health, happiness, and productivity. Overcrowded coops can lead to stress, aggression, disease, and reduced egg production.
Key Factors
- •Number and type of chickens in your flock
- •Where chickens spend most of their day
- •Access to outdoor run or free-range areas
- •Climate and seasonal considerations
Calculation Formula
Total Area = (Regular Chickens × Regular Space) + (Bantam Chickens × Bantam Space)
Space Requirements Table:
| Location | Regular | Bantam |
|---|---|---|
| Coop (indoor) | 10 sq ft | 4 sq ft |
| Run (covered) | 4 sq ft | 2 sq ft |
| Yard (free-roam) | 3 sq ft | 1 sq ft |
Note: These are minimum requirements. More space is always better for chicken welfare.