Reptile Terrarium Size Calculator
Calculate the minimum terrarium size for your reptile based on species.
Includes heating, lighting, and humidity recommendations.
Enclosure Recommendation
Reptile enclosure sizing depends on the species, adult size, and activity level of the animal. The enclosure must be large enough for thermoregulation (moving between warm and cool zones), exercise, and natural behavior.
General minimum enclosure rules:
- Snakes: Length of enclosure should be at least 2/3 the length of the snake. Width should be at least 1/3 the snake’s length.
- Lizards: Length should be at least 1.5–2× the lizard’s total length. Width at least 1× the lizard’s length.
- Arboreal species: Height is more important than floor space. Height should be at least 2× the animal’s length.
Recommended minimum enclosures by species:
| Species | Min Size (L × W × H) | Type |
|---|---|---|
| Leopard Gecko | 36 × 18 × 18 in (91 × 46 × 46 cm) | Terrestrial |
| Bearded Dragon | 48 × 24 × 24 in (122 × 61 × 61 cm) | Semi-arboreal |
| Ball Python | 48 × 24 × 18 in (122 × 61 × 46 cm) | Terrestrial |
| Corn Snake | 48 × 24 × 24 in (122 × 61 × 61 cm) | Semi-arboreal |
| Crested Gecko | 18 × 18 × 36 in (46 × 46 × 91 cm) | Arboreal |
| Blue Tongue Skink | 48 × 24 × 18 in (122 × 61 × 46 cm) | Terrestrial |
| Chameleon (Veiled) | 24 × 24 × 48 in (61 × 61 × 122 cm) | Arboreal |
| King Snake | 48 × 24 × 18 in (122 × 61 × 46 cm) | Terrestrial |
| Green Iguana (adult) | 72 × 36 × 72 in (183 × 91 × 183 cm) | Arboreal |
| Tortoise (small) | 48 × 24 × 18 in (122 × 61 × 46 cm) | Terrestrial |
Environmental requirements:
- Basking spot: 90–110°F (32–43°C) depending on species.
- Cool side: 70–80°F (21–27°C).
- Nighttime drop: 5–10°F (3–6°C) below daytime.
- UVB lighting: Essential for most diurnal reptiles (12–14 hours/day).
- Humidity: Varies greatly (20–80% depending on species).
Tip: Always research the specific care requirements for your species. These are minimum sizes, and larger enclosures are always better. Provide hiding spots on both the warm and cool sides of the enclosure.