Bearded Dragon Tank Size
Pogona vitticeps
The short answer: an adult needs 120 gallons — 48" × 24" × 24". Below is what to use at each stage, and why the enclosure type matters as much as the volume.
Baby
40 gal36" × 18" × 18"
Starter tank for hatchlings up to 6 months old
Juvenile
75 gal48" × 18" × 21"
Growing dragons (6-12 months) need more space
Adult
120 gal48" × 24" × 24"
Minimum for adult bearded dragons (12+ months)
Enclosure type
PVC front-opening enclosure or glass tank with screen top
What most people get wrong
Bearded dragons are active and terrestrial, requiring horizontal space for basking, hiding, and movement. Larger is always better. Minimum height should allow for proper UVB gradient.
Other species
Need to compare sizes side by side? Use the calculator.