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How old is a 2-year-old dog in human years?

A 2-year-old dog is about 22–24 in human years, depending on size: 24 for small, medium and large dogs and 22 for giant dogs.

Size

Not sure? We use medium.

How old is your pet?

At 2 years, a dog is

24 human years

Vet chart (by size)

Young adult

No breed or size picked, so we assumed a medium-sized dog.

Other methods: DNA formula (UCSD study): 42 · The ×7 rule: 14

The default is the size-based vet chart. See how pet age is calculated.

Dog ages around 2

Dog age in human years, ages 1–5. Small is 20 lb or less, Medium is 21–50 lb, Large is 51–100 lb, Giant is over 100 lb.
Dog ageSmallMediumLargeGiant
1 year15151512
2 years24242422
3 years28282831
4 years32323238
5 years36363645

The default is the size-based vet chart. See how pet age is calculated.

2-year-old dog by breed

FAQ

How old is a 2-year-old dog in human years?

A 2-year-old dog is about 22–24 in human years, depending on size: 24 for small, medium and large dogs and 22 for giant dogs.

Is a 2-year-old dog old?

It depends on size. At 2, dogs of every size are young adults. Vets consider a dog a senior in the last quarter of its expected lifespan.

How old is a 2-year-old dog with the ×7 rule?

14, compared with 24 on the vet chart for a medium dog. The ×7 rule is a myth: pets age fast in their first two years and more slowly after that.