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Hedgehog Weight Calculator

Estimates healthy adult weight range for hedgehogs based on breed, age and body condition.

WeightFreeNo data stored

Weigh on a flat surface; for small animals, weigh a carrier and subtract its weight.

The healthy range shifts with frame, so a large-framed animal is not automatically overweight.

Your result appears below.

This tool provides a general estimate and does not replace professional veterinary advice.

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What is the Hedgehog Weight Calculator?

The Hedgehog Weight Calculator estimates healthy adult weight range for hedgehogs based on breed, age and body condition. Weight is one of the earliest and easiest signals of a health problem, both gradual weight gain and unexpected weight loss are worth catching early.

Hedgehogs generally live 4-6 years when they are well looked after. Diet-wise they are an insectivore, which shapes almost every feeding decision you make. African pygmy hedgehogs need a solid-floor enclosure kept at a steady 24-27C. Below that they may attempt hibernation, which is dangerous for them. They are solitary and must be housed alone. Health problems that show up most often in hedgehogs include wobbly hedgehog syndrome, attempted hibernation from cold, obesity, which is part of why tracking this over time pays off.

Hedgehog quick facts

Reference values for hedgehogs from the species data behind this tool.
MeasureHedgehog
Typical lifespan4–6 years
Adult weight0.7–1.3 lb (0.3–0.6 kg)
DietInsectivore
Mature atAbout 6 months
Pregnancy34–37 days
Litter size3–5
Humidity40–60%

How does the Hedgehog Weight Calculator work?

The healthy range is drawn from breed or size-variant references for hedgehogs, adjusted for age where growth is still underway. Individual hedgehogs vary more than averages suggest, so read the number as a reference point rather than a measurement.

What changes the answer

  • Breed or size variant: which sets a very different healthy range than a flat species-wide number would
  • Age: growing juveniles are compared against a growth curve rather than an adult target
  • Body condition: since two animals at the same weight can have very different amounts of muscle versus fat
  • Spay/neuter status and activity level, both of which shift metabolic needs

How do you use the Hedgehog Weight Calculator?

  1. Enter the current weight in whichever unit you use (lb, oz, kg)
  2. Pick your build for the species (Small or fine-boned, Average, Large or heavy-boned)
  3. Pick your life stage (Growing, Adult, Senior)
  4. Enter the age
  5. Press Calculate, then read the result alongside the sources listed below

Worth doing: jot down the date and the result each time. A single number tells you little, but a trend across a few months tells you a lot about your hedgehog.

For related questions, see the other weight tools or browse every hedgehog tool.

Before you rely on this

Two hedgehogs with identical numbers on paper can still need different care. Breed or line, body condition, activity level and any existing health conditions all pull the real answer away from the average. If your hedgehog has a diagnosed condition, is pregnant, or is very young or very old, treat the figure here as the loosest of guides and let your vet set the actual target.

Sources and references

The formulas, reference ranges and species data behind the Hedgehog Weight Calculator come from these veterinary references, professional bodies and published research.

  • Built on veterinary referencesFormulas and ranges come from veterinary manuals, university research and welfare bodies, listed above for you to check.
  • Instant resultsNo page reload, no waiting and no account. Enter your details and the result appears straight away.
  • Private by designCalculations run in your browser. Nothing you enter is stored on our servers or shared with anyone.
  • Always freeEvery XpertsPet tool is free to use, with no premium tier and nothing to sign up for.

Frequently asked questions

How often should I weigh my hedgehog?

Monthly is a reasonable default for adults; growing juveniles and animals on a health plan benefit from weekly or biweekly checks.

What if my pet is outside the healthy range?

A single reading outside the range isn't necessarily urgent, but a consistent trend, especially unexplained weight loss, is worth a vet visit rather than adjusting food on your own for hedgehogs.

Why does the tool ask for breed or size?

Healthy weight varies enormously by size variant within most species, a single species-wide average would be misleading for both the smallest and largest hedgehogs.

What is the Hedgehog Weight Calculator based on?

It uses published reference data and formulas from sources including Merck Veterinary Manual, WSAVA Global Nutrition Guidelines, RSPCA. The full list, with links, is in the sources section above.