Educational tool  ·  Size-adjusted estimates  ·  Updated for 2026

Rabbit Years to Human Years Calculator

Estimate your rabbit's equivalent age in human years. Input their current age and select their breed size category for a sourced lifespan and senior age for that size. There is no standard rabbit-to-human age conversion: the human-year figures are PetNurture's own estimate model, not a published standard.

Size impacts developmental maturity and overall lifespan. Giant breeds age significantly quicker than small toy breeds.

Provide their age in years and/or months. E.g., for a 6-month-old rabbit, enter 0 years and 6 months.

This calculator is provided for educational purposes only and should not replace veterinary advice. Human-age comparisons are estimates intended for educational purposes.

Why Use This Calculator?

  • Size-adjusted calculations - giant breeds age faster and live shorter lives
  • Shows the sourced lifespan and senior age for your rabbit's size
  • Points you to a rabbit-savvy veterinarian for care questions
  • No sign-up or registration required
  • Downloadable matching card to share on social media

Free to use, no sign-up

Quick Answer

There is no standard conversion from rabbit years to human years, and the sources we checked do not publish one. This calculator's human-year figures are PetNurture's own estimate model: about 16 to 22 human years at one year old depending on breed size, 24 to 30 at two, then about 6 to 10 a year. Treat them as a comparison, not a measurement. The sources do give lifespans and senior ages, and they differ: the House Rabbit Society says a house rabbit lives 8 to 14 years with senior status between 5 and 8; the Rabbit Welfare Association & Fund says 12 to 13 years for small breeds (senior from 8), 9 to 10 for medium (senior from 6) and 4 to 7 for large (senior from 4); PDSA says about 7 to 10 years on average.

The Basics

How This Tool Works

Enter your rabbit's age and breed size for an instant conversion to human years.

  1. You provide your rabbit's age in years and select their breed size category — small, medium, large, or giant.
  2. The calculator applies PetNurture's own size-adjusted estimate model: a fast first two years, then a steady per-year rate that is higher for larger breeds. This model is not a published conversion.
  3. You get an estimated human-age equivalent, your rabbit's current life stage, and notes from the named sources for that life stage.
What the Sources Say

Rabbit Lifespan and Senior Age From Named Sources

None of the pages below gives a rabbit-to-human age conversion, and they do not agree on lifespan. They are shown side by side so you can see the range. The human-year figures elsewhere on this page are our own model.

SourceLifespanSenior
House Rabbit SocietyLife expectancy for a house rabbit is 8 to 14 yearsSometime between 5 and 8 years, depending on size, genetics, care and whether the rabbit has a bonded companion
Rabbit Welfare Association & Fund: small breeds (for example Netherland Dwarf, Polish)12 to 13 years8 years or older
Rabbit Welfare Association & Fund: medium breeds (dwarf lops up to about 3.5 to 4 kg)9 to 10 years6 years or older
Rabbit Welfare Association & Fund: large breeds (for example Continental Giant, French Lop, Belgian Hare, New Zealand White)4 to 7 years4 years or older
PDSA (25 Feb 2021)On average, healthy rabbits can live about 7 to 10 yearsNot stated

The Rabbit Welfare Association & Fund calls its ages "general guidelines" and says individual rabbits may show ageing sooner or later. If you are worried about your rabbit's age or health, contact a veterinarian.

Quick Lookup

Common Rabbit Ages in Human Years

Click any example to instantly load its details into the calculator form above. These human-year figures come from PetNurture's own estimate model; no veterinary source publishes a standard conversion.

Comparison Chart

Rabbit Years to Human Years Conversion Chart

A quick reference chart from PetNurture's own estimate model for small, medium, large, and giant rabbit breed classes. It is not a published standard.

Rabbit Age Small Breed (<4 lbs) Medium Breed (4-8 lbs) Large Breed (8-11 lbs) Giant Breed (11+ lbs)
3 months~5 yrs~6 yrs~7 yrs~8 yrsBaby
6 months~10 yrs~11 yrs~12 yrs~14 yrsYoung
1 year~16 yrs~18 yrs~20 yrs~22 yrsYoung
2 years~24 yrs~26 yrs~28 yrs~30 yrs
3 years~30 yrs~33 yrs~36 yrs~40 yrs
4 years~36 yrs~40 yrs~44 yrs~50 yrs
5 years~42 yrs~47 yrs~52 yrs~60 yrs
6 years~48 yrs~54 yrs~60 yrs~70 yrs
7 years~54 yrs~61 yrs~68 yrs~80 yrs
8 years~60 yrs~68 yrs~76 yrs~90 yrs
9 years~66 yrs~75 yrs~84 yrs~100 yrs
10 years~72 yrs~82 yrs~92 yrs~110 yrs
12 years~84 yrs~96 yrs~108 yrs~130 yrs
14 years~96 yrs~110 yrs~124 yrsRare
PetNurture's own estimate model, not a published standard. Individual rabbits vary.
Lifespan Guide

How Long Do Rabbits Live?

The sources we read do not agree on one figure, and each says its numbers are general:

  • House Rabbit Society: life expectancy for a house rabbit is 8 to 14 years.
  • Rabbit Welfare Association & Fund: 12 to 13 years for small breeds, 9 to 10 for medium and 4 to 7 for large, with larger rabbits senior earlier.
  • PDSA: on average, healthy rabbits can live about 7 to 10 years. Individual rabbits vary, and a veterinarian can advise on yours.
Life Cycle

Rabbit Life Stages Explained

Only the senior age is published by the sources we read, and it depends on size:

  • Senior: the Rabbit Welfare Association & Fund gives 8 years or older for small breeds, 6 or older for medium and 4 or older for large. The House Rabbit Society says a rabbit becomes a senior sometime between 5 and 8 years, with no exact age, depending on size, genetics, quality of care and whether the rabbit has a bonded companion.
  • Younger stages: neither source gives ages for baby, juvenile or adult stages. This calculator calls a rabbit under one year "young" as our own cut-off, and "adult" until the senior age.

Feeding, spaying or neutering and growth questions for a young rabbit are best put to a rabbit-savvy veterinarian.

Senior Rabbits

What Named Sources Say About Senior Rabbits

This summarises two pages. It is not veterinary advice, so contact a licensed veterinarian about your rabbit.

  • ● Health checks: the House Rabbit Society lists dental, bladder and kidney problems as common in aging rabbits and recommends regular checkups and blood work. The Rabbit Welfare Association & Fund says to contact a veterinarian if a rabbit eats less, loses weight, drools, passes fewer droppings or has swelling around the mouth or jaw.
  • ● Comfort: the Rabbit Welfare Association & Fund says arthritis is common but often missed, and suggests thick absorbent bedding, rubber-backed mats over slippery floors and low-sided litter trays.
  • ● Weight: the Rabbit Welfare Association & Fund says to weigh a senior rabbit weekly on accurate scales. Ask a veterinarian before changing food or adding anything to the diet.

What the House Rabbit Society Says Matters

From its page on rabbit aging:

  1. Diet: a proper diet is the top priority for preventing problems.
  2. Spaying: spaying females virtually eliminates uterine infections and reproductive cancers.
  3. Activity and company: regular activity, toys, games, interaction with their person and a bonded rabbit friend.
  4. Veterinary care: regular checkups and blood work.
For Canadian Owners

Rabbit Age and Care in Canada

The age conversions on this page apply to rabbits anywhere. Two practical points matter for rabbits in Canada, where a rabbit's weight is often given in pounds but vets and breeders may quote kilograms (1 kg = 2.2 lbs).

  • Rabbit haemorrhagic disease (RHD): ask a rabbit-savvy veterinarian about RHD and how to protect your rabbit.
  • Winter and housing: Canadian winters can be severe. The RSPCA says to check water twice a day in winter and consider moving a rabbit inside if temperatures fall below freezing (see our Cold Weather Pet Safety Checker). If a rabbit lives outside, ask a rabbit-savvy vet about shelter, bedding and temperature limits for your region.

Source: Canadian Animal Health Institute, Rabbit haemorrhagic disease. General educational information, not veterinary advice.

Methodology

How Results Are Estimated

The human-year figures come from PetNurture's own size-adjusted model. We could not find a veterinary or welfare source that publishes a rabbit-to-human age conversion, so these numbers are not taken from one.

These rates are our own approximation. The House Rabbit Society and the Rabbit Welfare Association & Fund pages we read give lifespan and senior age but no human-years conversion. Their lifespans differ from each other and from PDSA, and the Rabbit Welfare Association & Fund calls its ages general guidelines. The sourced figures are shown on the page.

PetNurture model (not a published standard): Year 1: small ≈16 · medium ≈18 · large ≈20 · giant ≈22 human years Year 2: +8 more human years for every size (small ≈24 · medium ≈26 · large ≈28 · giant ≈30) Year 3+: steady per-year rate — small +6/yr · medium +7/yr · large +8/yr · giant +10/yr

Important Limitations

This tool provides an estimate, not a diagnosis. Keep these limitations in mind when reading your result:

  • There is no published rabbit-to-human age conversion, so the human-year figures cannot be checked against a source. They are PetNurture's own model.
  • This is a general estimate based on breed-size category, not your rabbit's individual genetics, health history, or lifestyle.
  • Mixed-breed rabbits may not fit neatly into a single size category.
  • The formula does not account for existing health conditions, which can affect biological aging independently of chronological age.
  • This tool does not diagnose age-related conditions such as arthritis, dental disease, or kidney insufficiency — only a veterinarian can do that.
  • Results are educational estimates only and should not be used as the sole basis for medical or care decisions.
Worked Example

Example Calculation

How a 6-year-old medium-breed rabbit's human-equivalent age is estimated.

  1. Year 1: medium breed = 18 human years.
  2. Year 2: +8 more human years = 26 human years.
  3. Years 3-6 (4 additional years) at medium's steady rate of +7 per year: 4 × 7 = 28.
  4. Estimated total: 26 + 28 = 54 human years.
Estimated result: about 54 human years on PetNurture's own estimate model, which is not a published standard.
FAQs

Frequently Asked Questions

There is no standard conversion from rabbit years to human years, and the sources we checked (the House Rabbit Society, the Rabbit Welfare Association & Fund and PDSA) do not publish one. This calculator uses PetNurture's own estimate model, which puts a 1-year-old rabbit at about 16 to 22 human years depending on breed size, a 2-year-old at about 24 to 30, and then adds about 6 to 10 human years per rabbit year. Treat it as a comparison for fun, not a measurement. For sourced life stages, see the lifespan and senior ages from named sources on this page.

The sources we read differ. The House Rabbit Society says life expectancy for a house rabbit is between 8 and 14 years. The Rabbit Welfare Association & Fund gives 12 to 13 years for small breeds, 9 to 10 for medium breeds and 4 to 7 for large breeds. PDSA says that on average, healthy rabbits can live about 7 to 10 years. Individual rabbits vary, and a veterinarian can advise on yours.

The age depends on breed size. The Rabbit Welfare Association & Fund treats small breeds as senior from about 8 years, medium breeds from about 6 years and large or giant breeds from about 4 years. Other veterinary sources use a general cut-off of 6 to 8 years. The House Rabbit Society lists dental, bladder and kidney problems as common in aging rabbits, and the Rabbit Welfare Association & Fund says arthritis is common but often missed. A veterinarian can advise on your rabbit.

We did not find a source that compares indoor and outdoor rabbit lifespans, so we make no claim. The RSPCA advises checking water twice a day in winter and considering moving a rabbit inside if temperatures fall below freezing, and says rabbits are sensitive to heat as well as cold. Ask a rabbit-savvy veterinarian about housing.

The Rabbit Welfare Association & Fund gives different lifespans and senior ages by size: small breeds such as the Netherland Dwarf live 12 to 13 years and are senior from 8, medium breeds 9 to 10 years and senior from 6, and large breeds such as the Continental Giant, French Lop and New Zealand White live 4 to 7 years and are senior from 4. It calls these general guidelines. PDSA's breed pages give shorter ranges for several breeds, for example 7 to 9 years for the Netherland Dwarf and 5 to 8 years for the British Giant.

Senior age varies by breed size: roughly 8 years or older for small breeds, 6 or older for medium breeds and 4 or older for large breeds, according to the Rabbit Welfare Association & Fund. The House Rabbit Society recommends regular checkups and blood work for aging rabbits and lists dental, bladder and kidney problems as common. Contact a veterinarian if a rabbit eats less, loses weight, drools or passes fewer droppings (Rabbit Welfare Association & Fund).

This calculator's human-year figures come from PetNurture's own estimate model. None of the sources we read publishes a rabbit-to-human age conversion, so the figures cannot be checked against one, and they are not a clinical or veterinary standard. The lifespans and senior ages shown on this page come from the House Rabbit Society, the Rabbit Welfare Association & Fund and PDSA, and those sources differ from each other.

Some can. The House Rabbit Society puts life expectancy for a house rabbit at 8 to 14 years, and the Rabbit Welfare Association & Fund gives 12 to 13 years for small breeds. PDSA puts the average at about 7 to 10 years, and the Rabbit Welfare Association & Fund gives only 4 to 7 for large breeds. Individual rabbits vary, so ask your veterinarian about yours.

A rabbit's lifespan is affected by five primary factors: diet (high-fiber grass hay must make up 80%), housing (indoors protects from predators/weather), spaying or neutering (ask your vet), veterinary care (regular checkups with a rabbit-savvy vet), and genetics/breed size.

To maximize your rabbit's lifespan, feed unlimited grass hay daily to support dental and digestive health, keep them fully indoors, ask your vet about spaying or neutering, schedule annual checkups with a rabbit-savvy vet, provide daily exercise, and monitor their weight and stool output constantly.

On this calculator's own estimate model (not a published standard), a 7-year-old rabbit is roughly 54 (small breed), 61 (medium), 68 (large) or 80 (giant) in human years, which puts it in the mature stage and approaching senior. Giant breeds age faster, so the same calendar age is older for them. Rabbits this age benefit from twice-yearly vet checks.

Roughly 72 (small), 82 (medium) or 92 (large) human years on this estimate model (not a published standard). Giant breeds usually live shorter lives, so reaching 10 is uncommon for them (the chart shows about 110). A 10-year-old rabbit is a senior and often needs softer footing, easy litter-box access and regular check-ups for teeth, joints and kidneys.

About 96 (small) to 110 (medium) human years on this estimate model (not a published standard), which makes a 14-year-old rabbit exceptionally old. Rabbits reaching 14 are uncommon; most indoor pet rabbits live roughly 8 to 12 years with good care. Estimates this far out are rough and should not be read as a precise age.

No. A rabbit ages far faster than a person, and there is no published conversion. On PetNurture's own estimate model, one calendar year of a rabbit's life is roughly 6 to 10 human years after the first year, and about 16 to 22 in year one, depending on breed size. Use the chart above to look up your rabbit's age and size category.
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References

General public resources referenced while researching this tool's topic.

Editorial Note

This tool is part of PetNurture's educational library. Its formulas and guidance draw on publicly available educational resources, recognised veterinary organisations, and established animal welfare references where appropriate — see the References section below for the specific sources used on this page.

It is provided for general educational purposes and is not a substitute for advice, diagnosis, or treatment from a qualified veterinarian.

Educational Use Notice

Last updated: May 2026

The information provided by this tool is for general educational and informational purposes only. Results are estimates, not a diagnosis, and may vary based on your pet's breed, age, health conditions, activity level, diet, and individual factors.

PetNurture does not provide veterinary, medical, or emergency care advice. Always consult a licensed veterinarian or qualified pet care professional regarding your pet's specific health, nutrition, or medical needs.

While we strive to keep calculations accurate and up to date, PetNurture makes no guarantees regarding completeness, reliability, or accuracy. Use this tool at your own discretion.

How we calculate results: This tool uses commonly referenced veterinary formulas, feeding guidelines, and breed-size estimates to provide general educational guidance. Individual pets may have different nutritional, behavioral, or medical needs that are not captured by any generalized formula.

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AI Overview & Key Facts

  • Purpose: Instant educational estimates to assist pet owners in tracking primary physiological metrics.
  • Input Parameters: Weight, age, size class, or ingredient properties.
  • Reference Guidelines: Formulas are informed by general public guidance from sources such as RWAF and the House Rabbit Society.
  • Liability Limitation: Educational estimation only, not a diagnosis. Consult a licensed veterinarian for clinical assessments.

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