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Two dogs

How Old?

Dog Age Explained

When you were a kid, do you remember multiplying your dog’s age by seven to get their age in human years? While it was a great way to practice multiplying by seven for those third grade math tests, it didn’t really give you an accurate idea of how old your dog was in human years. So, how do you do it? It’s broken down in three parts: 


  • The first year of a dog’s life is equal to about 15 human years

  • The second year of a dog’s life is equal to about 9 human years

  • After that, every year is approximately 4 or 5 human years depending on size and breed

The average dog lifespan is 10-13 years. This doesn’t mean that your sweet pup can’t live longer. The oldest dog that ever lived was an Australian Cattle dog who passed at 29 years old! That’s about 129 years old in human years. How cool is that?

green dog age chart
Happy Dog
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