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# Convert Dog to Human Age Chart and Calculator

Published: 2021/07/03 - Updated: 2023/07/16
Author: Disabled World - Contact Details
Peer-Reviewed: N/A - Publication Type: Conversion / Calculation
Related Papers: Latest Items - Full List

Synopsis: Easy to read table and calculator shows the equivalent dogs age compared to a humans age in years, includes average dog life expectancy in years by breed. The previous formula that had been used for many years was based on the calculation that 1 dog year equaled approximately 7 human years. The official holder of the world's oldest dog is held by an Australian Cattle Dog named Bluey who died in 1939 at age 29.

## Main Digest

No one formula for dog-to-human age conversion is scientifically agreed on. A 2019 study suggests a new formula based on changes made to a dogs' DNA over time. The previous formula that had been used for many years was based on the calculation that 1 dog year equaled approximately 7 human years. Today, as a general rule, the American Veterinary Medical Association states:

• The first year of a medium-sized dog equals around 15 human years.
• The second year of a dog equates to approximately nine human years - which makes a 2 year old dog equal to a 24 year old human (15+9=24).
• After that every human year equals approximately five dog years.

### World's Oldest Dog

The official holder of the world's oldest dog is held by an Australian Blue Heeler cattle dog named Bluey who died in 1939 at age 29. Guinness World Records says he was bought as a puppy in 1910 in Victoria, Australia, and worked among cattle and sheep for nearly 20 years before eventually being put to sleep.

### Average Age for a Dog

The average age at death for dogs - all breeds, all causes - was 11 years and 1 month, but in dogs dying of natural causes it was 12 years and 8 months. Only 8% of dogs lived beyond 15, and 64%of dogs died of disease or were euthanized as a result of disease - (wikipedia.org/wiki/Aging_in_dogs).

### Dog Age Equivalent in Human Years Calculator

Dog Age to Human Age Calculator

### Dog Years to Human Years Table

Dog Years to Human Years Conversion Chart
Size of Dog =SmallMediumLargeX Large
Dog Age in YearsEquivalent Human Age in Years
1 15 15 15 12
2 24 24 24 22
3 28 28 28 31
4 32 32 32 38
5 36 36 36 45
6 40 42 45 49
7 44 47 50 56
8 48 51 55 64
9 52 56 61 71
10 56 60 66 79
11 60 65 72 86
12 64 69 77 93
13 68 74 82 100
14 72 78 88 107
15 76 83 93 114
16 80 87 99 121

### Dog Breed Average Life Expectancy in Years

Breed of DogAverage Life Expectancy in Years*
Afghan Hound 12
Airedale Terrier 11.2
American Staffordshire Terrier 12.3
Basset Hound 12.8
Beagle 13.3
Bearded Collie 12.3
Bedlington Terrier 14.3
Bernese Mountain Dog 7
Border Collie 13
Border Terrier 13.8
Boston Terrier 15
Boxer 10.4
Bull Terrier 12.9
Bulldog 6.7
Bullmastiff 8.6
Cairn Terrier 13.2
Cavalier King Charles Spaniel 10.7
Chihuahua 15
Chow Chow 13.5
American Cocker Spaniel 12.5
Dachshund 12.2
Dalmatian 13
Doberman Pinscher 9.8
English Cocker Spaniel 11.8
English Setter 11.2
English Springer Spaniel 13
English Toy Spaniel 10.1
Flat-Coated Retriever 9.5
German Shepherd 10.3
German Shorthaired Pointer 12.3
Golden Retrievers 12
Gordon Setter 11.3
Great Dane 8.4
Greyhound 13.2
Irish Red and White Setter 12.9
Irish Setter 11.8
Irish Wolfhound 6.2
Jack Russell Terrier 13.6
Lurcher 12.6
Miniature Dachshund 14.4
Miniature Pinscher 14.9
Miniature Poodle 14.8
Random-bred/Mongrel 13.2
Newfoundland 10
Norfolk Terrier 10
Old English Sheepdog 11.8
Pekingese 13.3
Pomeranian 14.5
Pug 16
Rajapalayam hound 11.2
Rhodesian Ridgeback 9.1
Rottweiler 9.8
Rough Collie 12.2
Samoyed 11
Scottish Deerhound 9.5
Scottish Terrier 12
Shetland Sheepdog 13.3
Shiba Inu 14
Shih Tzu 13.4
Siberian Husky 13.5
Soft Coated Wheaten Terrier 13.2
Staffordshire Bull Terrier 14
Standard Poodle 12
Tibetan Terrier 14.3
Toy Poodle 14.4
Vizsla 12.5
Weimaraner 10
Welsh Corgi 11.3
Welsh Springer Spaniel 11.5
West Highland White Terrier 12.8
Wire Fox Terrier 13
Yorkshire Terrier 12.8

### Printable Dog Age Chart: Dog Years to Human Years Conversion Table

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*Longevity of British breeds of dog and its relationships with-sex, size, cardiovascular variables and disease - A. R. Michell DSc, MRCVS

Convert Cat to Human Age Chart and Calculator: Our calculator and table provide quick conversion of a cats age in years to an approximate equivalent human age.