How is dog age converted to human years?

The AVMA standard formula treats the first year as roughly 15 human years and the second year as 9 more (total 24). After year two, each dog year adds about 5 human years for a medium-size dog. So a 5-year-old medium dog is approximately 39 in human years.

What are the dog life stages?

Dog life stages are puppy (under 1 year), junior (1–2), adult (3–6), senior (7–10), and geriatric (11+). Larger breeds age faster, so a giant-breed dog may reach senior status closer to year 5.

How long do dogs live?

Average lifespan depends on size: small dogs (under 9kg) live around 14 years, medium dogs about 12, large dogs about 11, and giant breeds around 8. Sprint 1 of this calculator uses the medium-size default; Sprint 2 will add explicit breed and size selectors.

Dog Age Calculator & Lifespan Hub

Convert your dog's age to human years using the AVMA standard formula. Browse 54 breeds, 20 age guides, breed comparisons, and FAQs.

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Dog Age Calculator

Calculate your dog's age in human years using the AVMA standard formula.

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Popular Breeds

Labrador Retriever

Large (25-45kg)
12 years

Golden Retriever

Large (25-45kg)
11 years

German Shepherd

Large (25-45kg)
11 years

Poodle

Medium (10-25kg)
14 years

Bulldog

Medium (10-25kg)
9 years

Beagle

Small (<10kg)
13 years

Dog Breeds

Akita

Large (25-45kg)
11 years

Alaskan Malamute

Large (25-45kg)
12 years

Australian Shepherd

Medium (10-25kg)
13 years

Thai Bangkaew

Medium (10-25kg)
12 years

Basset Hound

Medium (10-25kg)
12 years

Beagle

Small (<10kg)
13 years

Bernese Mountain Dog

Giant (>45kg)
8 years

Bichon Frise

Small (<10kg)
14 years

Border Collie

Medium (10-25kg)
13 years

Boston Terrier

Small (<10kg)
12 years

Boxer

Large (25-45kg)
10 years

Brittany

Medium (10-25kg)
13 years

Bulldog

Medium (10-25kg)
9 years

Cavalier King Charles Spaniel

Small (<10kg)
12 years

Cavoodle

Small (<10kg)
13 years

Chihuahua

Small (<10kg)
15 years

Chow Chow

Medium (10-25kg)
11 years

Cocker Spaniel

Medium (10-25kg)
13 years

Dachshund

Small (<10kg)
13 years

Doberman Pinscher

Large (25-45kg)
11 years

English Springer Spaniel

Medium (10-25kg)
13 years

French Bulldog

Small (<10kg)
11 years

German Shepherd

Large (25-45kg)
11 years

Golden Retriever

Large (25-45kg)
11 years

Great Dane

Giant (>45kg)
8 years

Greyhound

Large (25-45kg)
11 years

Havanese

Small (<10kg)
14 years

Italian Greyhound

Small (<10kg)
14 years

Jack Russell Terrier

Small (<10kg)
14 years

Labrador Retriever

Large (25-45kg)
12 years

Lhasa Apso

Small (<10kg)
14 years

Maltese

Small (<10kg)
14 years

Mastiff

Giant (>45kg)
8 years

Miniature Schnauzer

Small (<10kg)
13 years

Newfoundland

Giant (>45kg)
9 years

Papillon

Small (<10kg)
15 years

Pekingese

Small (<10kg)
13 years

Pembroke Welsh Corgi

Small (<10kg)
13 years

Pomeranian

Small (<10kg)
14 years

Poodle

Medium (10-25kg)
14 years

Pug

Small (<10kg)
12 years

Rottweiler

Large (25-45kg)
9 years

Saint Bernard

Giant (>45kg)
9 years

Samoyed

Medium (10-25kg)
13 years

Shetland Sheepdog

Small (<10kg)
13 years

Shiba Inu

Small (<10kg)
14 years

Shih Tzu

Small (<10kg)
13 years

Siberian Husky

Large (25-45kg)
13 years

Staffordshire Bull Terrier

Medium (10-25kg)
13 years

Thai Ridgeback

Medium (10-25kg)
13 years

Vizsla

Medium (10-25kg)
13 years

Weimaraner

Large (25-45kg)
12 years

Whippet

Medium (10-25kg)
13 years

Yorkshire Terrier

Small (<10kg)
14 years

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Breed Comparisons

Labrador Retriever vs Golden Retriever German Shepherd vs Rottweiler Bulldog vs French Bulldog Yorkshire Terrier vs Maltese Poodle vs Bichon Frise Rottweiler vs Doberman Pinscher

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