Leopard Gecko Feeding Calculator
Get a science-based feeding plan tailored to your gecko's age, weight, and body condition — including how many insects to offer, how often, and the right feeder size.
Overview
The Leopard Gecko Feeding Calculator turns vague "feed every few days" advice into a concrete, repeatable plan. Instead of guessing how many crickets a 12-gram juvenile needs versus a 70-gram adult, you get a feeding quantity, a feeding schedule, and feeder-size guidance built around how leopard geckos actually grow and metabolize food.
It is designed for new keepers who want a reliable starting point, and for experienced owners managing weight gain, weight loss, or breeding-season recovery. Because feeding directly drives growth rate, obesity risk, and long-term organ health, getting portions right is one of the most impactful things a keeper can control.
How It Works
- Select your gecko's life stage — this sets the baseline feeding frequency, since young geckos eat daily while adults eat far less often.
- Enter the current weight in grams or ounces. Adult portions scale with body mass; juvenile portions scale with appetite at that stage.
- Choose the body condition based on tail thickness — the single best at-home indicator of fat reserves in leopard geckos.
- Pick your primary feeder insect. Calorie density varies, so the count is adjusted (e.g. richer mealworms or BSFL reduce the number offered).
- Press Calculate to see insects per feeding, weekly frequency, the weekly total, and a tailored adjustment note.
Formula Explanation
The calculator combines a stage baseline, a weight factor, a condition adjustment, and a feeder calorie factor:
Weekly total = Insects per feeding × Feedings per week
- Stage baseline: hatchlings/juveniles use a fixed appetite-based count fed daily or near-daily; adults start from a count proportional to body weight.
- Weight factor: for adults, roughly 2 appropriately-sized insects per 10 g of body weight, the widely used husbandry rule of thumb.
- Condition factor: underweight ×1.2, healthy ×1.0, overweight ×0.8 — and overweight adults also have their frequency reduced.
- Feeder calorie factor: crickets/Dubia = 1.0 (lean), mealworms ≈ 1.25, BSFL ≈ 1.2 — higher-fat feeders mean fewer pieces.
Practical Benefits
- Prevents obesity: overfeeding is the most common husbandry mistake; calibrated portions keep tails healthy, not bloated.
- Supports healthy growth: juveniles get enough food to grow steadily without being overwhelmed.
- Saves money on feeders: a weekly total tells you exactly how many insects to buy or breed, reducing waste.
- Makes vet conversations easier: a documented feeding plan and weight trend helps diagnose appetite or weight issues faster.
- Great for multiple geckos: quickly generate individualized plans for a whole collection.
Frequently Asked Questions
Disclaimer: This calculator provides general husbandry estimates for educational purposes only and is not veterinary advice. Individual leopard geckos vary by genetics, health status, and activity level. Always monitor your animal's weight and body condition, and consult a qualified reptile veterinarian for medical concerns or before making significant changes to a feeding regimen.
