Bird Cage Size Calculator
Minimum cage dimensions, bar spacing and perch count for your bird.
Enter your values
Enter the wingspan in cm.
Enter the number of birds in birds.
Enter the cage width in cm.
Enter the cage depth in cm.
Enter the cage height in cm.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Verdict
- Too small — see the minimums below
- Minimum width
- 106 cm
- Minimum depth
- 38 cm
- Minimum height
- 63 cm
- Recommended bar spacing
- 12-16 mm
- Floor area
- 0.45 m2 (0.23 m2 per bird)
- Perches needed
- 3 at varied diameters
Working
- 1min width = 25 cm x 3 x sqrt(2) = 106 cm
Quick answer
Minimum cage width should be at least three times the bird's wingspan, with bar spacing narrow enough that the head cannot pass through.
min width = wingspan x 3; volume = W x D x H
At a glance
| What it does | Minimum cage dimensions, bar spacing and perch count for your bird. |
|---|---|
| Category | Pets |
| Inputs needed | Wingspan, Number of birds, Cage width, Cage depth, Cage height |
| Main output | Verdict |
| Formula | min width = wingspan x 3; volume = W x D x H |
| Cost | Free — no sign-up, no download |
How to use the Bird Cage Size Calculator
- 1Measure or look up the wingspan of your species, tip to tip with wings extended.
- 2Enter how many birds share the cage and the cage's internal dimensions.
- 3Check bar spacing carefully — a bird that can push its head through can strangle.
Inputs explained
- Wingspan(cm)
- Enter the wingspan in cm.
- Number of birds(birds)
- Enter the number of birds in birds.
- Cage width(cm)
- Enter the cage width in cm.
- Cage depth(cm)
- Enter the cage depth in cm.
- Cage height(cm)
- Enter the cage height in cm.
Worked example
Using the values the calculator loads with:
Inputs
- Wingspan25 cm
- Number of birds2 birds
- Cage width90 cm
- Cage depth50 cm
- Cage height100 cm
Results
- VerdictToo small — see the minimums below
- Minimum width106 cm
- Minimum depth38 cm
- Minimum height63 cm
- Recommended bar spacing12-16 mm
- Floor area0.45 m2 (0.23 m2 per bird)
- Perches needed3 at varied diameters
- min width = 25 cm x 3 x sqrt(2) = 106 cm
Frequently asked questions
Is height or width more important?
Width, by a long way. Birds fly horizontally, so a wide cage beats a tall narrow one of the same volume.
Does out-of-cage time change the minimum?
It helps enormously but does not replace the minimum. Even with daily free flight the cage must allow full wing extension and short hops.
What do I need to enter into the Bird Cage Size Calculator?
Just 5 values: wingspan, number of birds, cage width, cage depth, cage height. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Bird Cage Size Calculator work out the answer?
Minimum cage width should be at least three times the bird's wingspan, with bar spacing narrow enough that the head cannot pass through. It applies the formula min width = wingspan x 3; volume = W x D x H and shows the working so you can check each step by hand.
Is the Bird Cage Size Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.