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Rabbit Age in Human Years Calculator
Convert your rabbit’s age to human years — rabbits mature fast in year one, then age about six human years per rabbit year.
Rabbit’s age (years)
plus months
Breed size
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How it works
Year 1 = 21 human years; each further year ≈ 6 human years
Rabbits reach sexual maturity at 4–6 months and are fully grown by a year, so the first year counts for about 21 human years. After that they age steadily, with smaller breeds living longest (10–12 years) and giants shortest (5–7). Senior rabbits from about age 5–6 benefit from softer flooring and twice-yearly vet checks.
Worked example
A 3-year-old rabbit: 21 + 6 + 6 = 33 human years.
Frequently asked questions
How long do house rabbits live?
Indoor, neutered rabbits commonly reach 8–12 years; the record is 18.
When is a rabbit a senior?
Around 5 for giants, 6–7 for medium breeds and 8 for dwarfs.
Related calculators
Dog Age Calculator
Convert your dog’s age to human years using the size-adjusted method vets actually use — not the old “multiply by 7” myth.
Cat Age Calculator
Turn your cat’s age into human years with the standard feline curve — a fast first two years, then about four human years each year after.
Hamster Age in Human Years Calculator
Convert a hamster’s age in months to human years — every hamster month is worth about 2.5–3 human years.
Just for fun — a rough estimate built on population averages.