Clarks Size Calculator

Enclosure Size Calculator

Enter the adult animal's length, whether it lives on the ground, in trees or is a snake, and how many will share. The calculator gives the minimum enclosure length, depth and height and its volume.

  • Enclosure size
  • Volume
  • Floor area
Your animal

From 1 to 400

From 1 to 10

Use the adult length, snout to tail tip, even for a young animal.

A ground lizard needs about 4 × its length, 2 × deep and 2 × tall. A bearded dragon of 20 in needs at least 84 × 42 × 42 in, about 641 gallons. A tree dweller of 10 in needs 24 × 24 × 30 in, taller than it is long.

Reptile enclosure size chart

Minimum sizes. Search for a pet.

Enclosure by animal
AnimalAdult length (in)LivesEnclosure (in)
Leopard gecko9Ground36 × 18 × 18
Bearded dragon20Ground84 × 42 × 42
Blue tongue skink20Ground84 × 42 × 42
Crested gecko8Trees18 × 18 × 24
Chameleon18Trees36 × 36 × 54
Corn snake54Snake54 × 30 × 30
Ball python48Snake48 × 24 × 24
Uromastyx16Ground66 × 36 × 36

Inches.

Lizard and enclosure

Ground lizard. Slide the length.

The enclosure grows with the lizard.

How to size an enclosure

Length to tank. Step through it.

Length

Adult.

Make a warm end and a cool end so your pet can choose.

Ground, tree or snake

Enclosure shapes. Compare them.

Long and low.

Length4 × animal
Height2 × animal
ExampleBearded dragon

Tree dwellers need height to climb, ground dwellers need floor to roam.

Before you buy

Enclosure checks. Tick each item.

Tick each item as you go.

Bigger is better. These are minimum sizes.

What you get

Enclosure sizing. Each tile explains one result.

Size

Inches.

Volume

Gallons.

Floor

Square feet.

Height

Climbing.

Stock

Nearest size.

Each extra animal needs about half as much floor again.

Frequently Asked Questions

What size enclosure does a bearded dragon need?

At least about eighty four by forty two by forty two inches for an adult.

How big should a reptile enclosure be?

About four times the animal's length for ground dwellers.

What size enclosure for a leopard gecko?

At least about thirty six by eighteen by eighteen inches.

Do tree lizards need tall enclosures?

Yes, about three times their length in height.

How long should a snake enclosure be?

At least as long as the snake.

Can reptiles share an enclosure?

Some can, but each extra animal needs more floor space.

Is a bigger enclosure always better?

Yes, as long as the heat and humidity can be kept right.

Room to roam

Give your pet an enclosure sized to its adult length and it has room to climb, bask and explore.

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Each one has its own calculator, worked examples and answers to common questions.

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