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How Old Is My Cat in Human Years?

The FelineVMA chart for converting cat years to human years, a shortcut worked from it, the four feline life stages, and what Cornell says about the multiply-by-seven rule.

Choolip Team14 Oct 2026 · 7 min read

A tabby kitten and an older gray tabby cat resting side by side on a knit blanket, two ends of the cat years to human years chart

To convert cat years to human years, the feline life stages chart from the FelineVMA (the veterinary association formerly known as the AAFP) counts a 1-year-old cat as about 15 human years and a 2-year-old as about 24.

After that, the chart adds 4 human years for every cat year. A 10-year-old cat is about 56, and a 15-year-old is about 76.

The full chart is below, along with what Cornell's Feline Health Center says about the old "multiply by seven" rule.

How do you convert cat years to human years?

The simplest way is to read the age off the FelineVMA chart below. For a cat aged 2 or older, there is also a shortcut we worked out from the chart's own rows. It is not a formula the FelineVMA publishes.

Take the cat's age, subtract 2, multiply by 4, then add 24. So an 8-year-old cat works out as (8 − 2) × 4 + 24 = 48. That matches every row of the chart from 2 to 21 years, and the 25-year row.

For a cat under 2, the shortcut doesn't fit the chart, because the first two years run at a very different speed. Use the chart instead.

Cat years to human years chart

This is the FelineVMA chart, with each cat age beside its human equivalent and the life stage it falls in.

Cat's age	Human equivalent	Life stage
1 month	1 year	Kitten
3 months	4 years	Kitten
6 months	10 years	Kitten
1 year	15 years	Young adult
2 years	24 years	Young adult
3 years	28 years	Young adult
4 years	32 years	Young adult
6 years	40 years	Young adult
7 years	44 years	Mature adult
8 years	48 years	Mature adult
9 years	52 years	Mature adult
10 years	56 years	Mature adult / senior
11 years	60 years	Senior
12 years	64 years	Senior
13 years	68 years	Senior
14 years	72 years	Senior
15 years	76 years	Senior
16 years	80 years	Senior
17 years	84 years	Senior
18 years	88 years	Senior
19 years	92 years	Senior
20 years	96 years	Senior
21 years	100 years	Senior
25 years	116 years	Senior

Look at the first three rows. On the FelineVMA chart, a 6-month-old kitten is already the equivalent of a 10-year-old child.

Not sure how old your cat is to begin with? For a young one, our guide to how old is my kitten walks through the clues in eyes, teeth and weight.

Why is the "multiply by 7" rule wrong?

Cornell's Feline Health Center says the commonly held belief that every cat year is worth seven human years is not entirely accurate. Both Cornell and the FelineVMA chart show a fast first two years, then a slower, even pace.

Run the old rule against the FelineVMA chart and it misses in both directions:

At 1 year, the 7x rule says 7. The chart says 15.
At 2 years, the rule says 14. The chart says 24.
At 10 years, the rule says 70. The chart says 56.
At 15 years, the rule says 105. The chart says 76.

So the rule makes young cats sound younger and older cats sound older than the chart does. That matters because the AAHA/AAFP guidelines base a cat's care recommendations on its life stage.

Do the experts agree on the exact numbers?

Nearly, though not to the year. Cornell compares a 1-year-old cat to a 16-year-old person and a 2-year-old cat to a person of 21, then adds about 4 years for each year after.

By Cornell's figures, a 10-year-old cat is similar to a 53-year-old person, a 12-year-old to 61, and a 15-year-old to 73. The FelineVMA chart puts those ages at 56, 64 and 76. Both present the numbers as approximate.

What are the life stages of a cat?

The 2021 AAHA/AAFP Feline Life Stage Guidelines, written by a task force of experts in feline medicine, group a cat's life into four age-based stages:

Kitten: birth up to 1 year.
Young adult: 1 to 6 years.
Mature adult: 7 to 10 years.
Senior: over 10 years.

A fifth stage, end of life, can occur at any age. The task force cut the list down from six stages in the 2010 version, saying the simpler grouping matches how owners generally see their cat growing up and aging.

The guidelines also call any age groupings "arbitrary demarcations along a spectrum and not absolutes." They note that some cats aged 10 and older stay in excellent physical condition and may be best treated as mature adults, at the vet's discretion.

Why does my cat's age in human years matter?

The AAHA/AAFP guidelines note that signs of illness and pain are often difficult to detect in the sometimes reclusive or stoic cat. Cornell puts it another way: cats are experts at hiding illness, and elderly cats are no exception.

The guidelines cite figures showing owners took dogs to the vet 2.3 times a year in 2006, against 1.1 times for cats. They give hard-to-spot signs, and cats being seen as self-sufficient, as two reasons owners believe cats don't need medical care.

The guidelines recommend an exam at least once a year for every cat. Senior cats should be seen at least every six months, and more often for those with chronic conditions.

If vet trips are a struggle, our guide to cat carrier training covers ways to make them easier.

What changes as a cat gets older?

Cornell's Feline Health Center notes that many cats begin to show age-related physical changes between seven and ten, and most do by twelve. That lines up with the mature adult stage in the guidelines.

Some of the changes Cornell lists are quiet ones: thinner, less elastic skin, less effective grooming, overgrown claws and, commonly, hearing loss.

Cornell also notes that joint pain may make it hard for an older cat to get in and out of a litter box, and suggests a box with low sides or a cut-out entry.

Food needs shift too. The AAHA/AAFP guidelines note that cats over 10 may need 10 to 20% more food energy than mature adults, in some cases up to 25%, and that being underweight is a common problem in senior cats.

Ask your vet how much your older cat should eat. Our guide to how much should I feed my cat covers portions by weight and life stage.

Call your vet promptly if your older cat shows signs like these

Cornell's list of signs that may suggest a problem in a senior cat includes:

weight loss
increased thirst or increased urination
difficulty eating or swallowing
an unkempt appearance of coat or skin
not using the litter box consistently
changes in behavior

Cornell's advice is to never assume that changes in an older cat are simply due to old age, and therefore untreatable. It says any change in behavior or physical condition should prompt a call to your vet.

How long do cats live?

A study of 4,009 cats that died while registered at primary care vet practices in England, published in the Journal of Feline Medicine and Surgery, found a median lifespan of 14 years.

On the FelineVMA chart, 14 is a cat of about 72. The oldest cat in the study reached 26.7 years, beyond the chart's last row of 25 years (116).

The same study found females lived longer than males, with medians of 15 and 13 years. Crossbred cats outlived purebreds, 14 years against 12.5, though individual purebred breeds varied substantially.

Questions new cat parents ask

How old is a 1-year-old cat in human years?

About 15, according to the FelineVMA chart. Cornell puts it at 16.

Is a 7-year-old cat old?

Under the AAHA/AAFP guidelines, seven is the start of the mature adult stage. The FelineVMA chart puts it at roughly 44 in human years.

At what age is a cat considered a senior?

Over 10, under the AAHA/AAFP guidelines, which recommend a checkup at least every six months from then on.

How old is a 15-year-old cat in human years?

About 76 on the FelineVMA chart, or about 73 by Cornell's figures. On the chart, a 20-year-old cat is about 96, and a 21-year-old has reached the human equivalent of 100.

Does the chart work for every breed?

The FelineVMA chart doesn't give breed-specific figures. The English study found purebred cats had a shorter median lifespan than crossbred cats, though individual breeds varied substantially.