Crested Gecko Prey Size Calculator

What is the Crested Gecko Prey Size Calculator?

The Crested Gecko Prey Size Calculator calculates correct feeder insect or prey size relative to crested gecko head size. Overfeeding is one of the most common and most preventable health problems in pets, while underfeeding a growing or active animal can slow development or sap energy.

A well-cared-for crested gecko usually lives somewhere between 15 and 20 years. As a frugivore, what a crested gecko needs from its diet changes across its life stages. Crested geckos are arboreal and need a tall planted enclosure rather than a wide one, kept at room temperature between 22-26C. They thrive on prepared powdered diets and cannot tolerate heat above 28C. The usual suspects for this species are metabolic bone disease, floppy tail syndrome, heat stress above 28C, so any noticeable change is worth following up.

How does the Crested Gecko Prey Size Calculator work?

The estimate starts from a resting-energy formula based on body weight, then adjusts for activity level, life stage and, where relevant, the specific nutritional profile of crested geckos. Use it to know roughly where you stand and what to ask about, not to rule anything in or out on its own.

What affects the result

• Body weight: the single biggest driver of daily calorie needs
• Activity level: a sedentary indoor animal needs meaningfully less than an active or working one
• Life stage: since growing, pregnant or nursing animals need more energy per kilogram than a stable adult
• Spay/neuter status: which typically lowers metabolic needs somewhat

How do you use the Crested Gecko Prey Size Calculator?

1. Enter the body weight in whichever unit you use (lb, oz, kg)
2. Pick your activity level (Low, Moderate, High)
3. Enter the calories per cup of your food
4. Press Calculate, then read the result alongside the sources listed below

If the result looks wrong, check your inputs before you worry. Entering weight in the wrong unit is easily the most common reason a figure looks off.

For related questions, see the other nutrition tools or browse every crested gecko tool.

Before you rely on this

This calculation assumes a healthy adult crested gecko with no complicating conditions. Pregnancy, recovery from illness, medication and significant age at either end of the scale all change what is appropriate. When in doubt, the safest move is to take the number to a vet and ask whether it fits your particular animal.