This calculator checks your bearded dragon's weight against age-appropriate ranges. Enter their current weight in grams and select their age to see whether they're on track. Healthy bearded dragons typically reach 350–550 grams as adults (18+ months).
Bearded dragons grow quickly in their first year, then slow down as they approach adult size. This chart shows typical weight ranges at each growth stage. Individual dragons vary — genetics, diet, and husbandry all affect growth rate.
| Age | Weight (grams) | Weight (oz) | Length (inches) |
|---|---|---|---|
| 0–1 month (hatchling) | 4–6g | 0.1–0.2 oz | 3–4" |
| 1–2 months | 6–40g | 0.2–1.4 oz | 5–9" |
| 2–3 months | 20–100g | 0.7–3.5 oz | 8–11" |
| 3–4 months | 50–115g | 1.8–4.1 oz | 9–12" |
| 4–5 months | 60–150g | 2.1–5.3 oz | 11–16" |
| 5–6 months | 100–200g | 3.5–7.1 oz | 13–18" |
| 6–8 months | 150–280g | 5.3–9.9 oz | 16–20" |
| 8–12 months (juvenile) | 200–360g | 7.1–12.7 oz | 18–22" |
| 12–18 months (sub-adult) | 300–450g | 10.6–15.9 oz | 20–24" |
| 18+ months (adult) | 350–550g | 12.3–19.4 oz | 20–24" |
Proper husbandry is the foundation of healthy growth. Temperature, UVB lighting, and diet all directly affect your bearded dragon's weight and development.
For overall reptile health, check our Reptile Weight Calculator for other species, or use the Reptile Nutrition Calculator for feeding guidelines.
FAQs
Adult bearded dragons (18+ months) typically weigh 350–550 grams (12–19 oz). Males are usually larger at 400–550g while females average 350–500g. Weight varies by genetics, diet, and overall health. Use our calculator to check against age-specific ranges.
Bearded dragons grow rapidly in their first 12 months, gaining 50–100 grams per month during peak growth (3–8 months). Growth slows after 12 months and most reach adult size by 18–24 months.
Use a digital kitchen scale set to grams. Place a small container on the scale, tare (zero) it, then gently place your bearded dragon inside. Weigh at the same time each day for consistency — before feeding is ideal.
Underweight bearded dragons may have parasites, improper husbandry (wrong temperatures or UVB), or inadequate diet. Ensure basking temps are 100–110°F, offer appropriately sized insects dusted with calcium, and consult a reptile veterinarian.
Overweight bearded dragons are common when fed too many fatty insects (waxworms, butterworms) or too little exercise. Reduce fatty treats, increase greens to 70–80% of adult diet, and encourage activity outside the enclosure.
Weigh juveniles (under 12 months) weekly to track growth. Adults can be weighed bi-weekly or monthly. Record weights to spot trends — sudden weight loss or failure to gain during growth phases warrants a vet visit.
Healthy hatchlings grow from about 4g at birth to 200–360g by 12 months. The fastest growth happens between 3–8 months. If your bearded dragon plateaus during this period, check temperatures, UVB output, and diet quality.
Yes. Adult males typically weigh 400–550g and measure 20–24 inches, while females average 350–500g and 18–22 inches. Males also have wider, more triangular heads and larger femoral pores.
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