GeckoCalc started the way most reptile problems do: with a new keeper, a glass tank, a heat mat, and a dozen conflicting forum answers about what temperature anything should be. The numbers that matter — mat size, thermostat setting, tank footprint — deserve better than guesswork.
So we built the calculators we wished existed when we started: simple, free, no sign-up, and grounded in widely accepted husbandry standards like the 1/3 heat mat rule, 90–95°F warm-side floors, and age-based enclosure minimums. Do the math, keep them safe.
Our Principles
- Numbers over opinions. Every calculator shows its rule and its math — check us.
- Fast and readable on any phone. No pop-ups, no bloat, no accounts.
- Honesty about limits. These tools guide setup decisions; they are not a substitute for a reptile veterinarian.