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FurCalc

Rabbit Age Calculator — Rabbit Years to Human Years

How old is your bunny in human-equivalent years? This calculator converts rabbit age to human years using breed-size-adjusted lifespans — Netherland Dwarfs commonly reach 10-14 years while Flemish Giants average only 5-8. Unlike most online rabbit age tools, this one accounts for the fact that giant breeds age nearly twice as fast as dwarfs. Lifespan ranges follow the Rabbit Welfare Association & Fund health resources and ARBA breed standards.

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Your rabbit is approximately
28human years
Rabbit age: 3 yr · Typical lifespan: 8–10 yr · Size: medium

About Medium (Californian, Rex, Havana)

Typical adult weight: 6–10 lb.

Dwarf and small breeds live longer than large/giant breeds — size is the single biggest predictor of rabbit lifespan.

There is no single scientifically validated rabbit-to-human age formula. This estimate follows the Rabbit Welfare Association's guidance adjusted for breed size.

Rabbit lifespan by breed size

Size classAdult weightLifespanExample breeds
Dwarf1.5-4 lb10-14 yearsNetherland Dwarf, Britannia Petite
Small4-7 lb8-12 yearsMini Rex, Holland Lop, Polish
Medium7-9 lb7-10 yearsMini Lop, Dutch, Havana
Large9-12 lb6-9 yearsNew Zealand, Californian, Rex
Giant12+ lb5-8 yearsFlemish Giant, French Lop, Checkered Giant

Spayed/neutered bunnies live ~30% longer than intact ones — uterine cancer alone affects 60% of intact does by age 5.

Rabbit life-stage terminology

Kit
Newborn rabbit, 0-8 weeks; weaning starts at 4 weeks.
Adolescent
3-6 months for small/medium breeds, 6-12 months for giants; sexual maturity hits, behavior changes.
Senior bunny
From age 5 for giants, 7 for small/dwarfs; warrants twice-yearly vet wellness exams and dental checks.
Spay / neuter benefit
Spayed does avoid uterine cancer (60% incidence in intact does by age 5); neutered bucks have calmer behavior.

Frequently Asked Questions

How long do rabbits live?

Dwarf and small rabbits: 10–12 years. Medium: 8–10. Large: 6–9. Giant breeds like the Flemish Giant: 5–8. Indoor pet rabbits live significantly longer than outdoor or hutch-only rabbits.

At what age is a rabbit considered senior?

Small breeds at 6–7 years; medium at 5–6; large/giant at 4–5. Senior rabbits benefit from semi-annual vet checkups and arthritis-friendly enclosures.

Is my rabbit a dwarf or small breed?

Netherland Dwarf, Holland Lop, and Mini Rex are dwarf/small (2–4 lb). Mini Lop is small-medium. New Zealand, Californian, and Satin are medium-large (8–10 lb). Flemish Giant is giant (13–20 lb).

Why do bigger rabbits have shorter lifespans?

Larger body size correlates with faster metabolic aging and higher cancer incidence. Giant breeds also have higher rates of heart disease and arthritis.

How can I help my rabbit live longer?

1) Indoor housing. 2) Spay/neuter (reduces uterine cancer risk — 80 % in unspayed does). 3) Unlimited timothy hay. 4) Pelleted food ≤ 1/4 cup/day for adults. 5) At least 4 hours of run time daily. 6) Annual vet exam.

Sources & References

  1. [1]
    Rabbit lifespan and breed size — Rabbit Welfare Association
  2. [2]
    Common rabbit diseases by age — Merck Veterinary Manual
  3. [3]

Common mistakes to avoid

  • Assuming all rabbits age the same — dwarf breeds live 10-14 years; giants often only 5-7.
  • Ignoring age-related behavior changes — senior rabbits are quieter and may hide illness.

Pro tips

  • At 5+ years, add twice-yearly exotic vet exams with dental check.
  • Soften pellets with warm water for senior rabbits with dental issues.