How Big Do Bearded Dragons Get?
Bearded dragons reach 16 to 24 inches with about half of that being tail, at 350 to 550 grams. Selectively bred German Giant lines exceed 28 inches but are uncommon.
Published adult size figures
| Figure | Value | Notes |
|---|---|---|
| Adult | 16-24 in total length | Roughly half of it tail |
| Weight | 350-550 g | Adult range |
| German Giant lines | 28 in and beyond | Selectively bred and uncommon |
Checked September 20, 2026 against the sources at the foot of this page. Where sources differ the range is shown rather than averaged.
Getting there
Hatchling to adult in 12 to 18 months
With the most rapid growth in the first six months. Hatchlings start at 3 to 4 inches.
Males run slightly larger
Toward the upper end of the range, with females tending smaller.
What that size means in practice
48 by 24 by 24 inches for one adult
The commonly published minimum, with larger preferred. Hatchlings can start in 24 by 18 by 18 and be upgraded.
Floor length provides the gradient
A basking end well above 100F and a cool end in the eighties needs distance between them. That is what the 48-inch figure is really about.
Common questions
How big do bearded dragons get?
Adults reach 16 to 24 inches in total length, roughly half of which is tail, weighing 350 to 550 grams. Males run slightly larger than females.
How big a tank does an adult bearded dragon need?
A commonly published minimum of 48 by 24 by 24 inches, with larger preferred. The length matters because it is what creates the temperature gradient from a hot basking end to a cool end.
What is the biggest bearded dragon?
Selectively bred German Giant lines can reach 28 inches or more. They are uncommon, and a standard Pogona vitticeps will not reach that size.