How Long Do Cats Live? The Measured Answer

Most sites answer this question with "12 to 18 years" and move on. We can do better, because two research teams actually counted. In the UK, the VetCompass life-table study analyzed 7,936 confirmed deaths and measured a life expectancy at birth of 11.74 years. In the US, a Banfield hospital study followed 2.39 million cats and measured 11.18 years. Those numbers include every kitten that never reached year one. A cat who makes it to adulthood in good care usually does much better: an earlier English study of 4,009 deaths found the median age at death was 14.0 years.

Why you see three different numbers

Each figure answers a slightly different question. None of them is wrong, and none of them predicts one individual cat.

Life expectancy at birth is dragged down by kitten deaths, the way human life expectancy in 1900 was dragged down by infant mortality. Median age at death is counted only among cats that died, in an older cohort. That is the whole mystery of the gap. When a page quotes one number without saying which kind it is, it is guessing.

One more honesty note, straight from the UK data: 83.7 percent of the recorded deaths were euthanasia. Measured cat lifespans partly reflect when owners and vets decide that quality of life has run out, not only when bodies give up. Any lifespan number you read, including ours, carries that human decision inside it.

How long do indoor cats live?

Here is where this page has to break some news. The figure quoted everywhere, "indoor cats live 10 to 15 years, outdoor cats live 2 to 5 years", traces back to a 2019 UC Davis behavior handout that cites no study at all. Its entire sourcing is the phrase "statistics show". We went looking for the study behind it. As far as we can establish, it does not exist. The UK's largest life-table study did not analyze indoor versus outdoor status as a variable at all.

What the veterinary bodies actually say is qualitative, and consistent:

• US: the AVMA says free-roaming cats "may have a reduced life span", listing vehicles, attacks, poisons and weather. The ASPCA asks owners to keep cats indoors and says plainly that "outdoor cats do not live as long as indoor cats". Neither puts a number on it.
• Canada: the CVMA cites surveys showing almost 80 percent of veterinarians support an indoor lifestyle for health reasons, and that outdoor cats face "higher rates of mortality and morbidity due to trauma, infectious disease, parasite loads".
• UK: the culture runs the other way. Cats Protection's 2025 guide says that "ideally all cats would be allowed access to outdoors to express their natural behaviour". Per the PDSA's 2024 PAW Report, 67 percent of UK cats have outdoor access; indoor-only living has risen from 15 percent in 2011 to 31 percent.
• Australia: the strictest of the four. Canberra requires 24-hour containment for every cat born since 1 July 2022, and the newest Australian-led peer-reviewed review argues for containment on the cat's own health, not only wildlife.

So the honest summary: outdoor life carries measurably higher rates of trauma and infectious disease, and a Swedish study of insured cats found traffic accidents among the leading causes of death in outdoor-roaming breeds. But nobody has measured "2 to 5 years", and the AAFP's 2024 position frames the choice as a balance of risks and benefits rather than a death sentence. Where you live changes the calculus: an American suburb with coyotes and six-lane roads is not an English village.

How long do outdoor and feral cats live?

For owned cats with outdoor access, see above: higher risk, no honest year-figure. For feral cats, the situation is starker and even less measured. No institutional study we could reach publishes a feral life expectancy. Welfare organizations describe shorter, harder lives, driven by the same causes the CVMA lists, without disease treatment or road sense. Any precise feral figure you see quoted comes from the same uncited chain as the indoor/outdoor one.

Cat years to human years: the life stages

The 2021 AAHA/AAFP guidelines divide a cat's life into five stages, and their authors add a caveat worth keeping: "any age groupings are inevitably arbitrary demarcations along a spectrum and not absolutes."

The human-equivalent column uses International Cat Care's published method: the first two years of a cat's life equate to about 24 human years, and every year after adds about 4. A 15-year-old cat sits near 76 human years; a 20-year-old cat near 96. For your own cat's exact age, our converter does the arithmetic and names the life stage. iCatCare runs its own six-stage model that adds a "super senior" stage at 15 and up. There is no official AAHA conversion chart, whatever other sites claim; we checked the guidelines end to end.

When is a cat a senior? The professional bodies do not fully agree, so we give you both. The AAHA/AAFP guidelines say cats over 10 years are seniors. Cornell's feline specialists note that cats are "now considered older at 12 to 14 years", where not long ago the threshold was 8, and that patients in their twenties no longer surprise anyone. For senior cats, the AAFP recommends a vet visit at least every six months from 10 to 15 years old, and every four months past 15.

What actually lengthens a cat's life

The same studies that measured lifespan also measured what moves it. These are population findings, not promises for one cat, and none of them replaces your vet.

• Being female: UK females averaged 12.51 years of life expectancy against 11.18 for males, a 1.33-year gap. The US data agrees: 11.68 versus 10.72.
• Neutering: in the UK model, unneutered cats had 4.29 times the odds of dying before age 3. The 2025 reanalysis found neutered cats outliving entire cats.
• Body weight: cats far from their breed's median weight, in either direction, lived shorter lives in the UK model. In the US data, cats just above ideal body condition outlived both ideal-weight and obese cats, a wrinkle researchers are still chewing on. What is not in dispute: obesity shortens lives.
• Breed versus moggie: UK crossbred cats averaged 11.89 years against 10.41 for purebreds, and the 2025 reanalysis crowned the plain moggie the longevity champion. In the US dataset, purebred cats lived longer, possibly because they are kept indoors more. The two findings disagree, the populations differ, and we report both.
• Routine care: twice-yearly checks after 10 (the AAFP line above) catch kidney disease, thyroid trouble and dental pain while they are still cheap to manage. This is the lever every institution agrees on.

Lifespan by breed: the one comparable ranking

Breed figures from different studies must not be ranked against each other, because the statistic types and populations differ. This table is the exception: twelve breed groups measured in ONE study, the UK VetCompass life tables, so the comparison is fair. Life expectancy at birth, in years:

Two cautions before you read anything into a single row. Some samples are small: the Maine Coon row rests on 69 deaths. And a low measured figure is not a verdict on your cat: the Ragdoll's own page tells the story of how a bigger, newer study moved its number up by 2.5 years.

Coat color and pattern, for the record, predict nothing. No study measures lifespan by coat, as our tabby, calico, tortoiseshell and tuxedo guides each explain honestly.

Every breed on this site, A to Z

The ranges below are the commonly published ones for each breed, the figures breeders and registries repeat. They are starting points, not measurements. Where a real measured figure exists for a breed, its own page names the study and tells you how the two numbers differ.

The oldest cats ever recorded

The verified record belongs to Creme Puff, of Austin, Texas: born 3 August 1967, died 6 August 2005, aged 38 years and 3 days per Guinness World Records. Her owner, Jake Perry, reportedly also owned an earlier record holder, which suggests the man knew something about cat care, or luck ran in that house.

The oldest living cat title was last confirmed by Guinness in November 2022: Flossie, a British cat then aged 26 years and 316 days. Press reports say she turned 30 in December 2025; Guinness has not published a fresh verification, so we report the 2022 reading as the verified one.

And a note of method that says everything about this topic: a Maine Coon named Rubble, of Exeter, England, was reported to have reached nearly 32. His family never applied to Guinness, so the age was never independently verified. Our Maine Coon lifespan page tells his story properly, label and all.

The reproductive record is Dusty of Texas, 420 kittens in a lifetime; the litter numbers behind that story are on how many kittens a cat can have.

What to take away

• Measured at birth, cats average about 11.2 years of life expectancy in the US data and 11.7 in the UK data; among adults, the median age at death sits around 14, and the gap is kitten mortality, not a contradiction.
• Female cats outlive males in both big datasets: 12.51 vs 11.18 years in the UK study, 11.68 vs 10.72 in the US one.
• Neutering carries a strong measured association: unneutered cats had 4.29 times the odds of dying before age 3 in the UK study.
• Cats in their twenties no longer surprise vets (Cornell), and the verified record is 38 years.
• The famous "outdoor cats live 2 to 5 years" line has no study behind it; what outdoor access measurably raises is specific risks, traffic above all.