Convert your dog's age to human years using our breed-specific calculator. Based on the latest veterinary research - the old "multiply by 7" rule is a myth!
A dog's first year equals about 15 human years. Puppies mature rapidly!
The second year adds about 9 human years, bringing your dog to ~24 human years.
Each year adds 4-8 human years depending on breed size. Larger dogs age faster.
| Dog Age | Small | Medium | Large | Giant |
|---|---|---|---|---|
| 1 year | 15 | 15 | 15 | 15 |
| 2 years | 24 | 24 | 24 | 24 |
| 3 years | 28 | 29 | 30 | 31 |
| 5 years | 36 | 39 | 42 | 45 |
| 7 years | 44 | 49 | 54 | 59 |
| 10 years | 56 | 64 | 72 | 80 |
| 12 years | 64 | 74 | 84 | 94 |
| 15 years | 76 | 89 | 102 | 115 |
* Human years equivalent. Based on AVMA and AKC guidelines.
No, the 7:1 ratio is a myth. Dogs age faster in their first two years, then slow down. A 1-year-old dog is roughly 15 in human years, and the rate varies by breed size - smaller dogs age slower than larger breeds.
Larger dogs age faster than smaller dogs. After age 2, small breeds add about 4 human years per dog year, medium breeds add 5, large breeds add 6, and giant breeds add 7-8 human years annually.
It depends on size. Small dogs are seniors around 10-12 years, medium dogs at 8-10 years, large dogs at 7-8 years, and giant breeds as early as 5-6 years. Senior dogs benefit from age-appropriate nutrition and care.
Scientists believe larger dogs age faster due to accelerated cell growth, which may increase the risk of age-related diseases. Small breeds can live 15-20 years, while giant breeds often live only 6-10 years.
Key factors include proper nutrition (consider fresh food for seniors), regular exercise, dental care, routine vet checkups, and mental stimulation. Subscription boxes can help provide age-appropriate toys and treats.
Typically, small dogs at 10-11 years, medium dogs at 8-9 years, and large dogs at 6-7 years. Senior formulas have adjusted calories, joint support, and easier-to-digest ingredients. Consult your vet for personalized advice.