Tank Temperature Gradient Calculator
Compare your reptile enclosure temperatures to species-correct basking, ambient, cool-zone and nighttime ranges — with plain-English warnings when a zone is dangerous.
Target gradient
Basking
100-110°F
100°FIn range
Warm side
85-90°F
85°FIn range
Cool side
75-80°F
75°FIn range
Nighttime
65-75°F
Never use heat rocks — surface burns are common. Measure with an infrared temp gun at the actual surface — stick-on gauges lie.
Not medical advice. This tool provides general guidance based on common veterinary formulas. Always consult your veterinarian for medical decisions about your pet.
Examples
- Bearded dragon basking 105°F, cool 78°FIn range across all zones
- Ball python basking 100°FToo hot — reduce to 88-92°F
- Crested gecko warm side 88°FToo hot — heat above 85°F is lethal