Their full grown size is determined by genetics, sex, environment, diet and health. Healthy babies grow at a rate of 1 to 3″ per month. An adult will be fully grown at 12 months of age. Bearded Dragons should measure anywhere from 16 to 24 inches in length and weigh 380 to 510 grams.

How big should a year old bearded dragon be?

These popular bearded dragons should be around 15 to 18 inches in length at approximately 1 year of age. Some will be a bit smaller, and others could grow another few inches over its second year.

How can you tell how old your bearded dragon is?

You can estimate your juvenile bearded dragon's age by length from the tip of his tail to the tip of his snout. Hatchlings begin life at less than 4 inches long. By the time bearded dragons are 6 weeks old, they'll be just over 6 inches long. The dragons grow at just under an inch per week.