"How big will my bearded dragon get?" is one of the first questions every new keeper asks. The short answer: a healthy adult central bearded dragon (Pogona vitticeps) usually reaches about 16-24 inches (40-60 cm) from snout to tail tip and weighs roughly 300-600 grams. The longer answer is more useful — because growth rate, not just final size, tells you whether your dragon is thriving.
The ranges below are typical, not targets. Genetics, sex, clutch, diet and husbandry all shift the numbers, and perfectly healthy dragons fall outside them. Use this as a sanity check, and bring any real concern to an exotics vet.
Bearded dragon growth chart by age
| Age | Typical length | Typical weight |
|---|---|---|
| Hatchling (0-1 mo) | 3-4 in / 8-10 cm | 2-4 g |
| 2 months | 5-9 in / 13-23 cm | 8-40 g |
| 3-4 months | 8-12 in / 20-30 cm | 20-110 g |
| 6 months | 11-18 in / 28-46 cm | 180-280 g |
| 9-12 months | 14-22 in / 35-56 cm | 280-450 g |
| 12-24 months (adult) | 16-24 in / 40-60 cm | 300-600 g |
Notice how wide the bands get — that's intentional. A 4-month-old at 60g and one at 100g can both be perfectly healthy. What you want to see is a curve that keeps climbing, not a number that hits a specific cell in the table.
How fast do bearded dragons grow, month by month
Growth is front-loaded. Reading the table above, a 3-4 inch hatchling typically reaches 11-18 inches by 6 months — roughly 1-2 inches a month — and often gains weight you can see on the scale week to week. From 6 to 12 months the pace roughly halves. Most dragons are close to their full length by about 12 months, then spend the next 6-12 months filling out: the tape measure barely moves while the scale keeps climbing until roughly 18-24 months.
That shape matters when you read your own numbers. A juvenile that adds nothing for several weeks is worth a closer look at food, heat and UVB; an 18-month-old that adds nothing in length is completely normal. Slower-than-expected growth isn't automatically a problem, but combined with poor appetite or lethargy it's worth a vet check.
How big do bearded dragons get as adults?
The VCA Hospitals care sheet puts healthy adults at 18-22 inches (45-56 cm) from nose to tail tip, which sits in the middle of the 16-24 inch band most keepers quote. Weight for a healthy adult is usually 300-600 grams, with a lot of the spread coming from build rather than length. VCA also notes that males are slightly larger than females, with bigger heads and darker beards.
Two things make "bearded dragon size" numbers disagree from one source to the next. First, what is being measured: most charts, including ours, use total length, and roughly half of that is tail, so a snout-to-vent figure looks much smaller. Second, which dragon: these ranges are for the central bearded dragon (Pogona vitticeps), the one sold as a pet. Rankin's and the other species are much smaller — see bearded dragon species and their sizes.
Bearded dragon age chart: telling age from size
If you adopted a dragon with no hatch date, you can read the growth chart backwards. It gives you a band, not a birthday, and it only works while the dragon is still growing.
| Total length | Weight | Likely age |
|---|---|---|
| Under 5 in / 13 cm | Under 10 g | Under 2 months |
| 5-12 in / 13-30 cm | 10-110 g | 2-4 months |
| 11-18 in / 28-46 cm | 110-280 g | 4-9 months |
| 16 in+ / 40 cm+ | 280 g+ | 9 months or older — size stops being a clock |
The bands overlap on purpose, because two healthy dragons of the same age can be weeks apart in size. Sex is another weak clue: VCA notes it is hard to tell under about three months, so visible femoral pores and a broad head point to an older dragon. Past adult size, nothing on the outside gives you a reliable age, and a vet can only estimate it too. The practical move is to pick a working birthday and start weighing from today.
Why weight in grams beats the tape measure
Length is satisfying to measure but hard to do accurately on a squirmy lizard. Weight in grams is the metric that matters. A cheap digital kitchen scale, used at a consistent time, gives you a precise number every time — and a steady upward trend (with normal plateaus) is the clearest sign of a healthy growing dragon. A sudden drop, or a long flat line in a young dragon, is an early warning worth acting on. The one time an adult's weight is supposed to sit flat for weeks is brumation — and even then the red line is about 10% of pre-brumation weight, which the free brumation check draws for your dragon.
Track the curve, not the number
This is exactly why we built Beardie Days. Instead of guessing against a generic chart, you log your own dragon's weight in grams and watch a personal growth curve form — alongside a photo timeline that shows the change a scale can't. You can keep length, sheds and notes in the same place, export everything to CSV, and since version 6.4 an Apple Watch app shows which dragon needs feeding or a bath today. It's free to start, with Premium removing the limits on dragons and logs. Pair it with our bearded dragon care guide to get the husbandry right, and our app vs spreadsheet comparison if you're deciding how to record it all.
Frequently asked questions
How big do bearded dragons get?
A healthy adult central bearded dragon (Pogona vitticeps) typically reaches about 16-24 inches (40-60 cm) in total length, including the tail, and usually weighs around 300-600 grams. Genetics, sex and diet all influence the final size, so individuals vary.
At what age is a bearded dragon fully grown?
Bearded dragons grow fastest in their first 6-12 months and generally reach close to their full length by about 12 months. They often continue to fill out in weight and bulk until roughly 18-24 months of age.
How fast do bearded dragons grow?
Fast at first, then slowly. A hatchling of about 3-4 inches typically reaches 11-18 inches by 6 months, which is roughly 1-2 inches a month. Growth in length slows sharply after about 12 months, while weight keeps climbing until around 18-24 months.
Can you tell a bearded dragon's age by its size?
Only roughly, and only while it is young. Under about a year, length and weight narrow the age down to a band of a few months. Once a dragon is close to adult size, usually after 12-18 months, size no longer tells you its age, so a 2-year-old and a 7-year-old can look the same.
How much should a baby bearded dragon weigh?
Hatchlings typically weigh only a few grams (around 2-4g) and grow rapidly, often reaching tens of grams within the first couple of months. The exact numbers vary, so the most useful thing is to track your own dragon's weight in grams over time and look for steady growth rather than hitting an exact target.
Chart your dragon's growth in grams
Log weight over time, build a hatchling-to-adult photo timeline, and catch trends early — all private, on your device.
Download Beardie Days on the App Store →Keep reading: Bearded Dragon Care Guide · App vs Spreadsheet Tracking. These ranges are general guidance — consult an exotics vet about any health concern. Questions for us? Email us.
