Reptile enclosure size is usually set by applying multiples to the adult total length. Sizing to the length the animal will reach, rather than the size it is now, is what stops you buying twice. Enter the adult length, a width, depth and height multiple and the dimensions of the enclosure you are considering, and this tool gives the minimum size, floor area and interior volume and checks all three dimensions.
The math is minimum dimension = adult length x that multiple, and the multiples you applied are printed with the results. There is no officially published minimum size table by species. Recommended multiples differ between sources for the same animal, and which direction matters depends on whether it climbs, lives on the ground or burrows. So there is no species list and you pick the multiples (as of October 2026). The check includes the boundary value.
This tool does not tell species apart, does not suggest multiples, and says nothing about the room needed for a temperature gradient or where to place hides. Plenty of floor area can still leave an arboreal species short on height. This tool is for reference only and does not replace veterinary care. Contact a veterinarian who treats reptiles right away if your animal paws at the walls constantly or refuses food.
Frequently Asked Questions
There is no official table. Use the figures you chose from your care reference or breeder. This tool only converts those multiples into dimensions.
It depends on the habits of the species. This tool compares all three directions separately and does not rank them for you.
The check includes the boundary, so it counts as met and the shortfall reads 0.0 in.