Dog Age Calculator: Dog Years to Human Years

Dog Age: How Old is Your Dog?


How old is your dog in human years? Multiplying your dog’s age by seven is easy, but isn’t very accurate.

This more carefully graded system piles the equivalent human years onto a dog’s life more quickly during the dog’s rapid growth to maturity.

If we think like a dog, here’s how a dog’s age compares to a human age! There may be some differences between breeds, but this should give you a good sense of a dog’s age!

Dog Years to Human Years Chart

Dog Years Human Years
6 months 10 years
1 year 15
2 years 24
3 28
4 32
5 36
6 40
7 44
8 48
9 52
10 56
11 60
12 64
13 68
14 72
15 74 ½
16 77
17 79 ½ 
18 82
19 84 ½
20 87
21 89 ½
22 92
23 94 ½
24 97
25 99 ½
26 102
27 104 ½
28 107
29 109 ½
30 112

Is your dog starting to enter its elderly years? Get some tips for caring for an old pup. Also, check our home remedies for your pet’s arthritis.

Ready to congratulate your dog for their birthday? Try out these yummy pet treat recipes.

Reader Comments

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I have a adorable new puppy her name is Bubbles. I love her so much. She is 2.5 months human years but I cant work out how old she is in dog years. Please help me. Thanks.

puppy age

Unfortunately, our chart does not cover dogs that are less than 6 months in age. Puppies mature rapidly in their first months of development; just how much will depend on the dog breed (size) and other factors. For a very rough estimate, you might use the formula: 6 months dog age/10 years human age = 2.5 months dog age/x years human age, which yields  a little over 4 years in human terms. Hope this helps–and congratulations on your new puppy!


Does the dog age chart apply to CATS too??


No it doesn't, but I sure wish they'd publish a chart that does.

cat ages

Traditionally, it was said that each year a cat lived was equivalent to having lived 7 human years (so, a cat 3 years old would be 21 years in human terms). However, this turns out to be incorrect. Cats mature faster during their first 2 years. Actually, looking at the dog chart above, it is very similar. The first 2 years of a cat’s life, it is estimated that they have matured to about 24 or 25 years of a human’s life. Then from there on, the cat develops more slowly, every year being the equivalent to about 4 years of a human. Maturity rate, aging, and lifespan of an individual cat will depend on environment, health, breed, etc., but this is a general guideline.

Dog age

I have a female rat terrier that is 17/79 1\2 years old. Very loyal and loving dog. My new puppy is 4mths old so she isn't quite 15 human years, my Res Boston Terrier is 8 dogs years & 52 human years. All are family dogs. Love them all.


I've also seen where a pup's first year was equivalent to 15 years old, and subsequent years equaled 7 years...

My American Pit Bull Lived to

My American Pit Bull Lived to be 15 or 16 years old and died from health problems


how do horses age?

horse ages

The age of a horse equivalent to human age will vary upon many factors, such as breed, etc. In general, though, it is thought that horses age about 6.5 years for each human year until age 4, when it is a young adult of about 20 in human years. After age 4, they age about 2.5 years for every human year.

My boys

Bruno made it to 48 or more....

Levi's currently 64....

Luv dawgies like they the only real true good in a bad bad world....

And dad mom too


And bye




I have two questions
1. If a dog is born 12-5 how old is she??
2. If a dog is born 2-10 how old is she?? Both of this year


Gingersnap was 13.5 yrs approx 110 in her years. She was a shelter dog mix of German shepherd, Chelsea collie, beagle, and husky.
Little on the heavy side about 110-125
One of the best dogs I had, smart, loyal, protective when need in her mind, loved kids, and would kill if you forced your way in the house with out a ok given. She was great miss her after 2001.

Our dog Lindsay lived to 98

Our dog Lindsay lived to 98 using this formula, not bad for a dog with only 3 legs. We miss you girl.

Like my dog throws up idk how

Like my dog throws up idk how long he is going to live how do u know when your dog going to die

My german shepherd is 56yrs

My german shepherd is 56yrs old..Fiona passed away on 21.5.15..will miss her..

April 26 my pekinesee/cocker

April 26 my pekinesee/cocker spaniel mix will be 83 1/2 . I've had him since he was 5weeks old. Had check up recently vet said he had strong heart that of a puppy. A little arthritis in one hip. For 10 yrs ge ran with my boys for miles through woods. He went every where they did. Now they're grown it's just us 2

My American Cocker is 60 yrs

My American Cocker is 60 yrs old and still loves to play with his toys.And has a very good appetite.

My Jack a poo is the exact

My Jack a poo is the exact same age as me! 32 years young!

My pinkinnise was 4 years old

My pinkinnise was 4 years old are years he would be 32 years Dogie years that a shame the grow so fast I want him to stay a baby . That growing old fast.

That makes my Collie mix

That makes my Collie mix right around 72. Good life!

Mines 1 years old.But in

Mines 1 years old.But in human years 15 year old

Y dog is 36 she is a pary of

Y dog is 36 she is a pary of our family I was there ecacly when she was born so if she ever died I would be so so so so so so so so so sad

Cool! My pitbull mix is 32

Cool! My pitbull mix is 32 and here i am calling her an old lady ^^. Im 17 and my sog is 32 XD

My pitbull is about 44

My pitbull is about 44

My goodness, a mini pin we

My goodness, a mini pin we had was almost 87 when we lost him, We lost him 4 yrs. ago and still miss him

My dog died after my

My dog died after my birthday. So sad, he is 82 years old.

we just got a new maltese

we just got a new maltese pomeranian mix puppy we cant decide if we should name it macy or chloe.

Awww..what a coincidence!!

Awww..what a coincidence!! Our yorkie/miniature schnauzer mix i gave to my niece they named her Mazy..and our Yorkie/Shih tzu mix we got last week we named Chloe.

My 2 yr. old Goldadore is the

My 2 yr. old Goldadore is the puppiest 24 year old there can be!

Jus got a pup she is 6 weeks

Jus got a pup she is 6 weeks how old she in human. Yrs

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