# Reptile feeding frequency calculator

> Pick a species and a life stage to get the feeding interval for that tier, straight from the ReptiFiles corn snake and leopard gecko care guides. Two tiers stand out: overweight corn snakes feed every 21–35 days, and adult leopard geckos feed every 5 days.

Use the interactive calculator on the page: https://petguidecalc.com/reptile/feeding-calculator/. Select a species and life stage to get the feeding interval for that tier.

## How often should you feed a reptile?

Feed a corn snake hatchling every 5–7 days, a juvenile every 7–10, a subadult every 10–12, and an adult every 14–21 days; overweight corn snakes stretch to 21–35 days per ReptiFiles. Leopard gecko juveniles eat daily, subadults every 2–3 days, adults every 5. Adjust the cadence if the tail is thicker than the neck.

## Feeding schedule by species and stage

| Species | Stage | Interval | Note | Source |
|---|---|---|---|---|
| Corn snake | Hatchling | Every 5–7 days |  | ReptiFiles · Corn Snake Care |
| Corn snake | Juvenile | Every 7–10 days |  | ReptiFiles · Corn Snake Care |
| Corn snake | Subadult | Every 10–12 days |  | ReptiFiles · Corn Snake Care |
| Corn snake | Adult | Every 14–21 days |  | ReptiFiles · Corn Snake Care |
| Corn snake | Overweight | Every 21–35 days | Body condition is a judgment call — confirm with a reptile veterinarian. | ReptiFiles · Corn Snake Care |
| Leopard gecko | Juvenile | Daily | Juveniles eat daily while growing. | ReptiFiles · Leopard Gecko Care |
| Leopard gecko | Subadult | Every 2–3 days |  | ReptiFiles · Leopard Gecko Care |
| Leopard gecko | Adult | Every 5 days | If the tail is thicker than the neck, cut feeding frequency back. | ReptiFiles · Leopard Gecko Care |

Intervals are day counts between feedings. The ReptiFiles guide behind each tier is named beside it.

## How the interval is determined

Corn snakes step down through life stages. Hatchlings feed every 5–7 days, juveniles every 7–10, subadults every 10–12, and adults every 14–21 days, per the ReptiFiles corn snake care guide. Overweight corn snakes are the slow lane at 21–35 days.

Leopard geckos move the other direction. Juveniles eat daily while growing, subadults every 2–3 days, and adults every 5 days, per the ReptiFiles leopard gecko care guide. The tail check is the practical signal: if the tail is thicker than the neck, cut the frequency back.

Worked example from the calculator: an adult leopard gecko returns every 5 days, and an adult corn snake returns every 14–21 days. Pick any other stage above and the result matches the row in the table below.

## Feeding frequency questions, answered

**Q: How often should I feed a corn snake?**

Hatchlings every 5–7 days, juveniles every 7–10, subadults every 10–12, and adults every 14–21 days, per the ReptiFiles corn snake care guide. Overweight corn snakes stretch to a 21–35 day schedule.

**Q: How often should I feed a leopard gecko?**

Juveniles eat daily, subadults every 2–3 days, and adults every 5 days, per the ReptiFiles leopard gecko care guide. The guide’s tail check applies on top: if the tail is thicker than the neck, feed less often.

**Q: When should a corn snake move to the 21–35 day schedule?**

ReptiFiles sets the slowest tier for overweight corn snakes at every 21–35 days, described as every 3–5 weeks. Body condition is a judgement call, so if you are unsure whether your corn snake is overweight, ask a reptile veterinarian.

**Q: Why do adult leopard geckos only eat every 5 days?**

Adults grow slower than juveniles, so the ReptiFiles leopard gecko care guide settles them at every 5 days. That cadence holds unless the tail looks thicker than the neck, which is the guide’s cue to feed less often.

**Q: How do I tell if my leopard gecko is getting too much food?**

The ReptiFiles leopard gecko care guide points to the tail: if it is thicker than the neck, cut the feeding frequency back. Compare against the cadence for your gecko’s stage, since juveniles eat daily while adults feed every 5 days.

## Sources

Both feeding schedules on this page come from the ReptiFiles species care guides. The table above tags each tier with its source.

- [An Update on Companion Inland Bearded Dragon (Pogona vitticeps) Nutrition](https://doi.org/10.1016/j.cvex.2023.08.002) — Barboza T, Bercier M, Vet Clin North Am Exot Anim Pract, 2024.
- [Corn Snake Care Guide](https://reptifiles.com/corn-snake-care/) — ReptiFiles, reptifiles.com. Source of the hatchling through adult cadences for corn snakes, plus the overweight 21–35 day schedule.
- [Leopard Gecko Care Guide](https://reptifiles.com/leopard-gecko-care/) — ReptiFiles, reptifiles.com. Source of the juvenile, subadult, and adult cadences for leopard geckos, including the every-5-days adult schedule and the tail-thickness check.

_Educational resource, not veterinary advice. PetGuideCalc — https://petguidecalc.com_