Answer
What size tank does a bearded dragon need?
An adult bearded dragon needs at least a 48 × 24 × 24 in enclosure (4 × 2 × 2 ft, about 120 gallons of space). ReptiFiles sets its minimum higher: 6 × 2 × 2 ft (24 cubic feet) for one adult.
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Common tanks compared
| Tank | Size (in) | Meets minimum? |
|---|---|---|
| 20 high | 24 × 12 × 16 | No |
| 20 long | 30 × 12 × 12 | No |
| 29 gallon | 30 × 12 × 18 | No |
| 40 breeder | 36 × 18 × 16 | No |
| 55 gallon | 48 × 13 × 21 | No |
| 75 gallon | 48 × 18 × 21 | No |
| 90 gallon | 48 × 18 × 24 | No |
| 125 gallon | 72 × 18 × 21 | No |
| PVC/front-opening enclosure | 48 × 24 × 24 | Yes |
One adult per enclosure. A 40-gallon tank is too small for an adult.
More questions
Is a 75-gallon tank OK for a bearded dragon?
It’s below the minimum: a 75-gallon tank is about 79 gallons of space versus about 120 for a 4 × 2 × 2 ft enclosure.
Can two bearded dragons share a tank?
Housing them separately is the safe default; adults can fight.
How many gallons does a bearded dragon need?
About 120 gallons of space: a 48 × 24 × 24 in enclosure.
Can a baby bearded dragon live in a smaller tank?
For a short time, yes, but most keepers buy the adult size from the start and add plenty of hides.
Does a bearded dragon need a tall enclosure?
Height matters less than floor space for ground-dwellers; climbers such as crested geckos need the height.
Is a front-opening enclosure better?
Many keepers prefer front opening: it is less stressful than reaching in from above.
Do I need to measure inside or outside?
Inside dimensions are what the animal gets; glass tanks are listed by outside size.
Where do these minimums come from?
From the keeper-care sources linked below; the reptile tank tool checks your own enclosure against them.
Citing this? Link to https://tools.thesturdypaw.com/answers/bearded-dragon-tank-size/. Free to reuse with a link (CC BY 4.0).
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