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Dog Years To Human Years Calculator & Chart By Breed

How old is my dog in human age? What is the real age of your dog breed? Calculate dog years to human years!

How to use the dog years calculator? Select a breed, enter your dog’s age, click on the calculate.






Dogs live much shorter than humans, unfortunately. However, there are also significant differences between dog breeds. Generally, a large dog lives shorter than a small dog. Although, there are cultured breeds that live for a very short time due to their physical structure. Such kind is a small French bulldog or a large Neapolitan mastiff. We also know that the development of a dog is much faster than human, practically a 1-year-old dog is 14-18 years old in human years.


Veterinarians can primarily deduce the age of the dog from the state of the teeth. Of course, the choice of previous keeping and the choice of pet food may also affect the state of the tooth. In this case, they will also examine the skeleton and the animal's fur. Slower motions and gray hairs also indicate older age.

Unfortunately, elderly dogs are more susceptible to diseases, especially the spinal problems that cause the greatest concern, which can primarily lead to the paralysis of the hind legs. As we feed our dog in his puppyhood with special meals, let's do this even in his older age. Vitamin-rich pet foods designed for old dogs can prolong the dog's age. The dog size significantly determines the highest expected age.

According to the Guinness Book of Records, an American dog named Butch has been officially recognized as the highest age in the world, he was 28 years old for eternal rest.

People tried to convert dog years to human years since the 13. century. A record of the Westminster Abbey from 1268 shows that dog's age 9 years in 1 calendar year, so 9 times faster than a human. There is no scientifical proof or reality in this data, although the age of dogs must have been multiplied if we want to calculate how old they would be as people.

The most common myth counts with 7 as a multiplier, but it is not even close to reality. Mostly because not every year worth the same.

Dogs become mature in their first year, while people at the age of 14-15. There are no other such rapid development or aging, so the next few years cannot be count as 15.

It is often heard that the age of dogs is relatively easy to calculate, just multiply by 7 the number of human years they have lived, and we already know how old our dog would be as people.

Truth is that dogs really age faster than us. They don’t even live for 80 years, but the calculation is more complicated than a simple multiplication.

Popular belief in real life would mean that the age of a 2 years old dog equals with a 14 years old kid. At the age of 10, the dog would be 70 years old. This can’t be 100% true. Instead of multiplication, we have to check the dog’s weight, breed, and health status. In reality, the average first 2 years of a dog equals 24 human years usually. With many dog breed, the first year equals 14-15 human years, and then it depends on the size, weight, breed, and health. Small dogs live longer and mature sooner than large ones, so their first year should be counted more, and then from the second year less.

Larger dogs, therefore, grow faster than very small dogs. See the dog age calculator chart below.

Dog Years vs Human Years Chart
Size of DogSmallMediumLarge
Age of DogAge In Human Years
1 dog year to human years15
2 dog years to human years24
3 dog years to human years28
4 dog years to human years32
5 dog years to human years36
6 dog years to human years404245
7 dog years to human years444750
8 dog years to human years485155
9 dog years to human years525661
10 dog years to human years566066
11 dog years to human years606572
12 dog years to human years646977
13 dog years to human years687482
14 dog years to human years727888
15 dog years to human years768393
16 dog years to human years808799
17 dog years to human years8593104


Small size dogs weigh a maximum 20 pounds, medium size dogs weigh between 21-50 pounds, large and giant size dogs weigh more than 50 pounds. There is no significant difference in age between large size dogs and giant size dogs.


Small and medium size dogs age slower than large and giant size dogs. This means that a 10 years old Pug equals 56 years old human, although a 10 years old Great Dane would be 66 years old in human age. Cross and Mix breeds tend to live longer than purebreds, because of their wide genetical spectrum they are more resistant to diseases.

So, how old is my dog in human years? Convert your dog’s age in human years now.

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