Leopard Gecko Size & Weight Chart by Age
Last updated: · Reviewed against sources listed below
This leopard gecko growth chart shows typical weight in grams and length by age. Most leopard geckos reach 7–10 inches and 45–80 grams as adults, and they grow fastest in the first six months. Weigh your gecko monthly to see if it is on track.
Estimate
- Estimated age
- Normal range for that age
- Compared with normal
This is our reptile age and growth estimator, preset for leopard geckos.
Leopard Gecko growth chart by age
Length is snout to tail tip. Weight is the better guide, because tails vary and can regrow after being dropped. Use the °F / in button at the top of the page to switch to centimeters.
| Age | Total length | Weight |
|---|---|---|
| Hatchling | 3–4 in8–10 cm | 2–5 g (0.07–0.18 oz)2–5 g |
| 1 month | 3.5–4.5 in9–11 cm | 4–8 g (0.14–0.28 oz)4–8 g |
| 2 months | 4–5 in10–13 cm | 7–15 g (0.25–0.53 oz)7–15 g |
| 3 months | 4.5–5.5 in11–14 cm | 12–20 g (0.42–0.71 oz)12–20 g |
| 4 months | 5–6 in13–15 cm | 15–25 g (0.53–0.88 oz)15–25 g |
| 5 months | 5.5–6.5 in14–17 cm | 20–30 g (0.7–1.1 oz)20–30 g |
| 6 months | 6–7 in15–18 cm | 25–40 g (0.9–1.4 oz)25–40 g |
| 8 months | 6.5–7.5 in17–19 cm | 30–50 g (1.1–1.8 oz)30–50 g |
| 10 months | 7–8 in18–20 cm | 35–55 g (1.2–1.9 oz)35–55 g |
| 12 months | 7–8.5 in18–22 cm | 40–65 g (1.4–2.3 oz)40–65 g |
| 18 months | 7.5–9 in19–23 cm | 45–75 g (1.6–2.6 oz)45–75 g |
| 2 years | 7–10 in18–25 cm | 45–80 g (1.6–2.8 oz)45–80 g |
How big do leopard geckos get?
An adult leopard gecko usually measures 7–10 in18–25 cm and weighs 45–80 g (1.6–2.8 oz)45–80 g. Males are usually larger than females. “Giant” and “super giant” bloodlines can reach 80–120 g or more, so a large gecko is not always an overweight one.
Most geckos are close to adult size by 12 months and finish filling out by about 18–24 months. From then on, weight should stay fairly steady.
Reading the leopard gecko weight chart
Weight is the most useful number to track. Use a digital kitchen scale that reads in single grams and weigh at the same time each month, before feeding. Also look at the tail: it should be about as wide as the neck. A tail wider than the body, or bulges under the arms, can mean the gecko is overweight. A thin, stick-like tail means it is underweight.
Why is my leopard gecko not growing?
- Too cool. A warm-side floor below about 88°F31°C slows digestion and appetite.
- Too little food when young. Babies need to eat daily.
- Not enough calcium or D3. Poor bone growth can stunt a gecko.
- Parasites. A fecal test can rule these out.
- Stress. Frequent handling, a busy room or cohabiting geckos can reduce feeding.
A gecko that is losing weight, has a thinning tail, or shows swollen limbs or a soft jaw should see a reptile vet. These can signal parasites or metabolic bone disease.
Frequently asked questions
How fast do leopard geckos grow?
Most hatchlings weigh 2–5 g and reach 25–40 g by about 6 months. By 12 months they are usually 40–65 g and close to adult length. Growth then slows, and most reach their final size between 18 and 24 months.
Do leopard geckos grow back their tails?
Yes. A leopard gecko can drop its tail when frightened and grow a new one over several weeks to months. The new tail is usually shorter, smoother and rounder. Because the tail stores fat, a gecko that has just dropped it needs steady feeding and a clean enclosure while it heals. See a vet if the wound looks red, swollen or infected.
What is a healthy leopard gecko weight?
Most adult leopard geckos weigh 45–80 g, and giant bloodlines can weigh more. Body shape matters as much as the number: a healthy gecko has a tail about as wide as its neck and no fat pads bulging under its arms.
Sources
- VCA Animal Hospitals — Leopard Geckos: Care
- ReptiFiles — Leopard Gecko Care Guide
- Merck Veterinary Manual — Reptiles (Pet Owner Version)
Where sources disagree we show the range they share. See our sources and methodology for how every number is checked.