Wondering how old would your dog be, if he was human? Want to know how old your dog is in human years? Different dog breeds age differently, so use our Dog Age Calculator tool below to determine your dog’s “human age”.

Feb 17, 2024 · Watch out for physical and mental signs of aging in your small dog around age 7 or 8, and in your large dog around 5 or 6 years old.

Mar 28, 2025 · The easy way to calculate a dog’s age is to take 1 dog year and multiply it by 7 years. This is based on the assumption that dogs live to about 10 and humans live to about 70, on average. For example, a dog that is 5 years old is 35 in “human years.”

Use this calculator to easily calculate how old your dog is in human years, or just the chronological age of the dog based on its date of birth. The dog age calculator takes as input the number of years your dog has lived (dog age, dog years) and converts the dog age to a human years equivalent based on a scientific formula.

Oct 28, 2024 · As a general guideline, though, the American Veterinary Medical Association breaks it down like this: 15 human years equals the first year of a medium-sized dog’s life. …

This calculator determines the age of your dog in equivalent human years or calendar years by specific breed or weight range. This calculator uses dog lifespan data from Wikipedia for the conversion. Dogs mature at different rates when compared to humans.

Feb 16, 2025 · Second year: Adds 9 more human years, making a 2-year-old dog roughly 24 human years old. Every additional year: Add 4-7 human years, depending on the breed size. Like small breeds age slower, adding about 4 years per dog year. Medium breeds usually add 5 …

Sep 4, 2024 · To accurately calculate your dog’s age in human years, we must look beyond the ‘1:7 rule’. According to American Veterinary Medical Association: When comparing human and dog ages, a common understanding is that the first year of a medium-sized dog’s life equals 15 human years approximately.

Mar 14, 2025 · How to Calculate Dog Years to Human Years. The general guidelines for determining how old a dog is are the following: The first two years of a small dog’s life is roughly the same as 12.5 human years, while it’s 10.5 for a medium dog and nine for large dogs.

Feb 20, 2025 · To get a sense of how old your dog is in human years, use a size-specific age chart or research-backed formulas. The chart below looks at your dog’s age and estimate human age by breed size: Dog age