Calculate enclosure size for your reptile
Use adult size, not current size
Minimum Enclosure Size
48 × 24 × 36 in
(L × W × H)
Volume
180 gal
Heat Lamp
150W
10.0 UVB (desert species) or 5.0 UVB (forest species)
Bigger is Better
These are minimum sizes. Larger enclosures are always preferred for reptile wellbeing.
Create a Gradient
Ensure your enclosure allows for a temperature gradient from warm to cool side.
Inputs
Result
Length = 24 x 2 = 48 in. Width = 24 x 1 = 24 in. Height = 24 x 1.5 = 36 in. Volume = (48 x 24 x 36) / 231 = 180 gal. Heat = clamp(180 x 2, 25, 150) = 150W.
Inputs
Result
Length = 48 in. Width = 48 x 0.33 = 16 in. Height = 48 x 0.4 = 19 in. Volume = (48 x 16 x 19) / 231 = 63 gal. Heat = clamp(63 x 2, 25, 150) = 126W.
A snake enclosure should be at least as long as the snake, with width and height each being 1/3 to 1/2 of the length. Larger is always better.
Most lizards and turtles require UVB for proper calcium metabolism. Some nocturnal geckos and snakes may not need it, but it can still benefit them.
This depends on enclosure size and ambient room temperature. Start with a wattage that maintains proper basking temperatures and adjust as needed.
It varies by species. Desert reptiles like bearded dragons need 30-40%, while tropical species like ball pythons need 50-60% or higher.
Calculate needs for all your animals
Last Updated: Feb 12, 2026
This calculator is provided for informational and educational purposes only. Results are estimates and should not be considered professional financial, medical, legal, or other advice. Always consult a qualified professional before making important decisions. UseCalcPro is not responsible for any actions taken based on calculator results.