On the simple ×8 method, a 6-month-old bearded dragon is about 4 in human years, a 1-year-old about 8, a 5-year-old about 40 and a 10-year-old about 80. Pet dragons usually live 8–12 years and are considered seniors from around 7–8.
Estimates only. Every bearded dragon grows and ages a little differently. See a reptile vet for health concerns.
Bearded dragon years to human years: how the conversion works
How old is your bearded dragon in human years? There is no veterinary standard for converting bearded dragon years to human years. No vet association or university publishes a reptile age chart the way the AKC does for dogs. The simplest published method, and the one this calculator uses, multiplies a dragon's age by 8. It rests on the idea that bearded dragons age about eight times faster than people. A 1-year-old dragon comes out at 8, a 5-year-old at 40 and a 10-year-old at 80.
The ×8 rule lines up reasonably well with lifespans. PetMD says pet bearded dragons typically live 8–10 years and average around 10, while people in many countries live to around 80. It is less accurate early in life: PetMD also says dragons reach maturity between 1 and 2 years, and some are sexually mature at 6 months, so a yearling is developmentally more like a teenager than an 8-year-old child. Treat the human-year figure as a fun comparison of life stages, not a medical measurement.
Enter your dragon's age in years and months above. You'll get its bearded dragon age in human years, its life stage, how far it is through a typical lifespan, a life-journey timeline and care tips for its stage. Copy the result to share it.
Bearded dragon age chart (0–18 years)
Use this bearded dragon age chart to look up any age. The "% of lifespan" column compares the age with an average lifespan of about 10 years (PetMD). Stages use Chewy's vet-reviewed growth stages and a senior age of about 7–8 years (Hepper, vet-reviewed).
| Dragon age | Human years (×8) | Life stage | % of ~10-year lifespan |
|---|---|---|---|
| 3 months | 2 | Juvenile | 3% |
| 6 months | 4 | Juvenile | 5% |
| 1 year | 8 | Sub-adult | 10% |
| 18 months | 12 | Adult | 15% |
| 2 years | 16 | Adult | 20% |
| 3 years | 24 | Adult | 30% |
| 4 years | 32 | Adult | 40% |
| 5 years | 40 | Adult | 50% |
| 6 years | 48 | Adult | 60% |
| 7 years | 56 | Senior | 70% |
| 8 years | 64 | Senior | 80% |
| 9 years | 72 | Senior | 90% |
| 10 years | 80 | Senior | 100% |
| 11 years | 88 | Senior | 100% |
| 12 years | 96 | Senior | 100% |
| 13 years | 104 | Senior (beyond typical) | 100% |
| 14 years | 112 | Senior (beyond typical) | 100% |
| 15 years | 120 | Senior (beyond typical) | 100% |
| 18 years | 144 | Senior (beyond typical) | 100% |
18 years is the oldest bearded dragon on record (PetMD; Chewy citing Guinness World Records). On the ×8 chart that equals 144 human years, which shows why the numbers are only a rough comparison.
Bearded dragon life stages explained
Bearded dragons change most in their first 18 months. Chewy's size guide, reviewed by a veterinarian, divides growth into four stages, and a vet-reviewed Hepper article adds a senior stage from about 7–8 years:
| Life stage | Dragon age | Human years (×8) | What's happening |
|---|---|---|---|
| Hatchling | Hatching – 3 months | 0–2 | Rapid growth; 2–3 small insect meals a day |
| Juvenile | 3–12 months | 2–8 | Growing fast; mostly insects, meals drop to once a day |
| Sub-adult | 12–18 months | 8–12 | Filling out; diet shifts toward greens |
| Adult | 18 months – 7 years | 12–56 | Fully grown; mostly greens, insects every day or two |
| Senior | 7+ years (around 7–8) | 56+ | Slowing down; may bask more and eat less |
- Hatchling: newly hatched dragons are only about 2–3 inches long (Chewy). They need small insects several times a day, and NC State recommends 2–3 feedings daily for dragons under a month old.
- Juvenile: the big growth spurt. Juveniles eat about 70% insects (PetMD) and can grow several inches a month. Our bearded dragon size by age calculator shows the expected length and weight for each month.
- Sub-adult: growth slows and the body fills out. Many dragons are sexually mature, and the diet starts shifting toward greens.
- Adult: full size is usually reached at about 18 months. Adults are mostly plant-eaters: PetMD suggests 70–80% vegetables and only 20–30% insects.
- Senior: older dragons slow down, bask more and may eat less. See the senior care tips below.
How long do bearded dragons live?
In captivity, most sources put the typical bearded dragon lifespan at about 8–12 years. PetMD's vet-written guide says dragons typically live 8–10 years with proper care and average around 10. Chewy's vet-reviewed article gives 8–11 years, and Hepper's gives 8–12. The RSPCA gives a longer range, usually 10 to 15 years or more. The calculator uses 8–12 years as the typical range and 10 years as the average when it works out how much of the lifespan has passed.
Captivity vs the wild: PetMD says wild bearded dragons live only a fraction as long as pets because of predators and the lack of consistent food, water and veterinary care. Chewy points to the harsh conditions of their native central Australia: predators, food shortages, extreme weather and competition. We found no reliable figure for the wild lifespan, so we don't give one.
What shortens a pet dragon's life? PetMD says metabolic bone disease and kidney disease are very common in dragons kept without proper care, and inbreeding, particularly in silkback dragons, can reduce longevity. Correct heat, UVB lighting, a varied diet and regular vet visits give a dragon the best chance of reaching the top of the range. The oldest bearded dragon on record lived to 18 years (PetMD). For comparison, a well-kept pet axolotl, an amphibian rather than a reptile, typically lives 10–15 years: see our axolotl lifespan calculator.
Senior bearded dragon care
A vet-reviewed Hepper article says bearded dragons are considered seniors at around 7–8 years, when they slow down, become more lethargic and eat less. There is no official cut-off, and some dragons stay active for longer. The calculator marks the senior stage from about 7 years, which is about 56 in human years on the ×8 chart. Common changes and ways to help:
- Slower, stiffer movement: keeper guides such as Bearded Dragons World recommend low ramps and flat, easy-to-reach basking platforms in place of tall climbing branches.
- Duller skin and less frequent shedding, and overgrown nails from moving around less. Your vet can advise on nail trims.
- Eating less: older adults already eat mostly greens. Tell your vet about any sudden appetite loss or weight change rather than assuming it is age.
- Easy access to water and a basking spot that doesn't need a climb.
- Regular reptile-vet check-ups. Blood tests and X-rays can check the kidneys and bones, which matters because kidney disease is common in bearded dragons (PetMD).
Don't know your dragon's exact age?
If your dragon came from a shop or rescue without a hatch date, size is the best clue while it is still growing. Use the "How old is my bearded dragon?" length-to-age mode, then come back here with the estimate. Once a dragon is adult-sized (about 20 inches), size can no longer tell you its age, so records from the breeder or seller are the only reliable guide.
For daily care at each age, the bearded dragon feeding schedule shows meals per day, the insect-to-greens ratio and a sample day for your dragon's stage.
Frequently asked questions
How do you convert bearded dragon years to human years?
Multiply the dragon's age by 8. This is the simplest published method, not a veterinary standard. A 3-year-old bearded dragon is about 24 human years and a 7-year-old about 56.
How old is a 6 month old bearded dragon in human years?
About 4 human years on the ×8 chart. Developmentally, though, some dragons are already sexually mature at 6 months (PetMD), so it is more of a pre-teen.
How old is a 1 year old bearded dragon in human years?
About 8 human years. A 1-year-old is a sub-adult that is still filling out.
How old is a 2 year old bearded dragon in human years?
About 16 human years. Most dragons are fully grown by this age.
How old is a 5 year old bearded dragon in human years?
About 40 human years, a mature adult.
How old is a 10 year old bearded dragon in human years?
About 80 human years. That is the average pet lifespan (PetMD), so a 10-year-old is a senior.
What does a bearded dragon age chart show?
It lists dragon ages next to their human-year equivalents and life stages. Ours covers 3 months to 18 years, with the share of a typical 10-year lifespan used.
Is there another way to work out a bearded dragon's age in human years?
Yes. Instead of a fixed ×8, you can compare life stages. PetMD says dragons mature between 1 and 2 years and some are sexually mature at 6 months, which would make a 1-year-old more like a human teenager than the 8 the chart gives. Other online calculators also use slightly different per-year rates. Every method is an estimate.
How long do bearded dragons live in captivity?
Usually about 8–12 years. PetMD gives 8–10 years (average around 10), Chewy 8–11, Hepper 8–12, and the RSPCA 10–15 years or more.
How long do bearded dragons live in the wild?
Much shorter than pets. PetMD says wild dragons live only a fraction as long because of predators and a lack of consistent food, water and veterinary care. We found no reliable number for the wild lifespan.
When is a bearded dragon considered a senior?
Around 7–8 years, according to a vet-reviewed Hepper article, which is about 56–64 in human years on the ×8 chart.
What is the oldest bearded dragon on record?
The oldest bearded dragon on record lived to 18 years (PetMD), which is 144 on the ×8 chart.
How can I tell how old my bearded dragon is?
While it is still growing, its length is the best clue. Try the length-to-age mode of the bearded dragon size by age calculator. Adult-sized dragons can't be aged from size.
This calculator gives an estimate for education and fun. Every pet ages differently — for health decisions, talk to your veterinarian.