The Size of a Full Grown Bearded Dragon

As a bearded dragon owner, I am always fascinated by the growth and development of these amazing reptiles. From hatchling to full-grown adult, a bearded dragon’s size can vary greatly depending on various factors such as genetics, diet, and overall health.

In this article, we’ll explore the different aspects of a full-grown bearded dragon’s size, and I will share some of my personal experiences and tips for ensuring your bearded dragon reaches their healthy, full-grown size.

Bearded Dragon Size Chart

When it comes to understanding the growth of bearded dragons, a size chart can be really helpful. The chart below provides general guidelines for bearded dragon sizes according to their age.

Age Size
Hatchling 3-4 inches
1 month 5-9 inches
2 months 8-11 inches
3 months 11-16 inches
6 months 12-18 inches
12 months 18-22 inches
Adult 18-24 inches

It’s important to note that these sizes are just approximate, and individual dragons may vary in size depending on factors such as genetics, diet, and overall health.

Average Length of Full-Grown Bearded Dragons

The average length of a full-grown bearded dragon is between 18-24 inches, with the tail accounting for more than half of its total length. My own bearded dragon, Spike, measures at an impressive 22 inches from head to tail tip!

Factors That Affect Bearded Dragon Size

There are several factors that can affect a bearded dragon’s size:

  • Genetics: Some bearded dragons are naturally larger or smaller due to their genetic makeup.
  • Diet: A balanced diet rich in protein, vitamins, and minerals is essential for healthy growth. Underfeeding or overfeeding can both lead to size and health issues.
  • Environment: Bearded dragons need proper temperature gradients and UVB lighting to properly digest their food and grow.
  • Health: Parasites, illnesses, or infections can hinder a bearded dragon’s growth.

How to Measure Your Bearded Dragon’s Size

Measuring your bearded dragon is simple. Allow your dragon to lay flat on a surface, and use a flexible measuring tape to measure from the tip of their nose to the tip of their tail. Keep in mind that bearded dragons may stretch or contract their body, so measure a few times to get an accurate reading.

Size Differences Between Male and Female Bearded Dragons

Males and females do have some differences in size, with males typically being larger and having broader heads and larger femoral pores. However, these differences can be subtle, and size alone is not a reliable indicator of gender.

When Do Bearded Dragons Stop Growing?

Bearded dragons generally stop growing around 12-18 months of age. However, they can continue to grow slowly until 2 years and even after that, depending on the individual.

Some common health concerns related to size include:

  • Obesity: Overfeeding or feeding a high-fat diet can lead to obesity, which can cause various health issues.
  • Metabolic Bone Disease (MBD): Insufficient calcium or UVB exposure can cause MBD, leading to deformities and stunted growth.
  • Stress: Stressful environments can inhibit growth and lead to health problems.

Tips for Growing Your Bearded Dragon to a Healthy Size

To ensure your bearded dragon grows to a healthy size, follow these tips:

  • Provide a balanced diet rich in protein, vitamins, and minerals. This includes a mix of insects and vegetables.
  • Ensure proper temperature gradients and UVB lighting in their enclosure.
  • Keep their environment clean and stress-free.
  • Conduct regular check-ups with a reptile veterinarian.


Overall, the size of a full-grown bearded dragon can vary greatly, but by providing proper care, a healthy diet, and a suitable environment, you can ensure your bearded dragon grows to their full potential.

Keep track of your bearded dragon’s growth and consult a veterinarian if you have any concerns. Remember, a happy and healthy bearded dragon will thrive, and their size will be a reflection of that.

Robert from ReptileJam

Hey, I'm Robert, and I have a true passion for reptiles that began when I was just 10 years old. My parents bought me my first pet snake as a birthday present, which sparked my interest in learning more about them. read more...