What is the average lifespan of a cat?

The average cat lifespan is 13–17 years for indoor cats and only 7–10 years for outdoor cats. Many indoor cats live well into their late teens or early twenties with proper care.

Do indoor cats really live longer than outdoor cats?

Yes, dramatically. Indoor cats live 2–3x longer on average. Outdoor cats face traffic accidents, predators, fights, infectious diseases, parasites, and toxin exposure — all of which slash their lifespan.

What is the longest a cat has ever lived?

The oldest verified cat was Creme Puff, a Texas cat who lived to 38 years and 3 days (1967–2005). The current Guinness record is held by Flossie at 27+ years. Most domestic cats live 13–17 years.

Which cat breeds live the longest?

Siamese and Burmese cats commonly live 15–20 years. Manx, Russian Blue, Savannah, and Sphynx are also long-lived. Persians and Maine Coons tend to have shorter lifespans (10–14 years) due to genetic health issues.

How can I help my cat live longer?

Keep your cat indoors, feed a high-quality balanced diet, maintain healthy weight, schedule annual vet checkups (twice yearly after age 10), keep up with vaccinations, provide mental stimulation, and watch for early signs of kidney disease and dental issues — the two biggest killers of older cats.

How Long Do Cats Live? Indoor vs Outdoor Lifespan Guide

If you're a cat parent, this is one of the questions you can't help thinking about: how long will my cat live with me?

The honest answer: 13–17 years on average for indoor cats, but with surprising variation. Some cats live to 20+, some sadly don't make it past 10. Genetics, environment, diet, and care all play massive roles.

Let's break down what really determines cat lifespan — and what you can do to give your cat extra years.

Average Cat Lifespan: The Real Numbers

Indoor Cats

13–17 years

Many reach 18–20+ with good care

Outdoor Cats

7–10 years

Many die before age 5 from accidents

The difference is staggering. Indoor cats live, on average, 2–3 times longer than outdoor cats.This isn't a small gap — it's the difference between losing your cat at 7 vs having them by your side until 17.

Why Outdoor Cats Live Shorter Lives

Outdoor cats face an array of risks that indoor cats simply don't encounter:

🚗 Traffic accidents — the single biggest killer of young outdoor cats.
🦴 Predators — coyotes, dogs, and birds of prey.
⚔️ Cat fights — territorial battles cause severe injuries and infections.
🦠 Infectious diseases — FIV, FeLV, and rabies spread through bites and shared resources.
🪲 Parasites — fleas, ticks, heartworm.
☠️ Toxins — antifreeze, rat poison, garden chemicals.
🌡️ Extreme weather — hypothermia, heatstroke.

If you currently let your cat outside, consider transitioning them to indoor life or building a “catio” (enclosed outdoor space). It could literally double their lifespan.

Cat Life Stages

Cats age much faster than humans, especially in their early years. Here's how a cat's life breaks down:

Kitten (0–6 months)

Equivalent to a human child up to 10 years old. Rapid development.

Junior (6 months–2 years)

Reaches full size; equivalent to teenager to mid-20s.

Adult (3–6 years)

Prime years; equivalent to late 20s to early 40s.

Mature (7–10 years)

Middle age; equivalent to mid 40s to mid 50s.

Senior (11–14 years)

Senior years; equivalent to late 50s to late 60s.

Geriatric (15+)

Very old; equivalent to 75+ in human years.

What's your cat's human age?

Get an instant conversion using our cat age calculator.

Open Cat Age Calculator

Lifespan by Breed

Cat breed affects lifespan less than dog breed does, but it still matters:

Breed	Typical Lifespan	Main Health Risk
Siamese	15–20+ years	Generally very healthy
Burmese	16–18 years	Diabetes in some lines
Mixed breed (DSH)	15–20 years	Genetic diversity helps
Russian Blue	15–20 years	Few breed-specific issues
Manx	14–16 years	Spinal problems
Sphynx	14–16 years	Heart disease (HCM)
Ragdoll	12–17 years	Heart disease (HCM)
Maine Coon	12–15 years	Heart disease, hip dysplasia
Persian	12–15 years	Kidney disease, breathing
Himalayan	10–14 years	Kidney disease, breathing

Flat-faced (brachycephalic) breeds sit at the bottom of the range because the same facial structure that makes them distinctive also restricts breathing. Mixed-breed cats do best on average — the same hybrid-vigour effect seen in dogs.

Whatever the breed, the conversion to human years works the same — see how old is my cat in human years. And if you have inherited a cat with no known birthday, here is how vets estimate age.

The Top 3 Killers of Older Cats

Most senior cats die from one of these three issues. Knowing them helps you watch for early signs:

1. Chronic Kidney Disease (CKD)

Affects 1 in 3 cats over age 10. Early signs: increased thirst, frequent urination, weight loss, vomiting. Annual blood & urine tests after age 7 catch it early when treatment is most effective.

2. Cancer

Lymphoma, mammary tumors, and skin cancer top the list. Spaying before first heat cuts mammary cancer risk by 90%+. Watch for lumps, weight loss, or appetite changes.

3. Heart Disease (HCM)

Hypertrophic cardiomyopathy is common in Maine Coons, Ragdolls, and Persians. Often shows no symptoms until advanced. Annual exams with a stethoscope can catch murmurs early.

7 Ways to Help Your Cat Live Longer

1. Keep them indoors. Single biggest factor. Build a catio if they crave outdoor time.
2. Feed quality food. Avoid cheap fillers; aim for high-protein, low-carb formulas. Wet food helps with kidney health.
3. Maintain healthy weight. Obesity increases diabetes risk by 4×. Use our cat food calculator.
4. Annual vet visits. Twice yearly after age 10. Most issues are treatable if caught early.
5. Dental care. 70% of cats over 3 have dental disease. It causes infections that damage organs.
6. Mental stimulation. Puzzle feeders, climbing trees, window perches, play time — boredom shortens life.
7. Spay / neuter. Reduces cancer risk and roaming behavior. Spayed/neutered cats live 1–2 years longer on average.

The Bottom Line

Most domestic cats live 13–17 years. With great care and a bit of luck on genetics, 18–20+ is achievable. The biggest single factor you control? Keep them indoors. The second? Regular vet visits, especially after age 10.

Your cat will tell you when something's off — they're subtle creatures. Pay attention to small changes: less jumping, drinking more, hiding more, eating less. These are often early signs of treatable conditions.

The good news: cats are tough. With modern veterinary care and a safe home, your cat has a great shot at being your companion well into your kid's teenage years. 🐱

Want to go deeper? Our indoor cat lifespan guide breaks down the numbers for indoor cats specifically. Once your cat passes eleven, the senior care routine changes. And for perspective on the far end of the scale, see the oldest cats ever recorded.