6 in dog years roughly equals 42 in human years.
This calculation was made for a medium-sized dog (21 to 50 pounds) using the recommendations from the AKC (American Kennel Club).
There are 2 ways of calculating the conversion from human years to dog years. The above result was calculated using the more correct way, we’ll explain what makes the other way incorrect later in this article.
The table below shows dog years and their equivalent to human years, with different columns for different sizes.
|Dog's Age in Years||Human Years (Small Dog)||Human Years (Medium Dog)||Human Years (Large Dog)|
Calculating how many human years is 6 in dog years
As mentioned above, there are 2 main ways of calculating dog years to human years and vice versa. There’s a correct way and an incorrect way.
The incorrect formula
Many people believe that one dog year is equal to 7 dog years. This assumption probably started in the 1950s, however it’s not the correct way to calculate it.
There has been quite a bit of research that has disproved this ratio of 7 to 1, people continue to believe it. This formula may be based on the assumption that dogs live to 10-ish years and humans reach 70 years old, but honestly we don’t know when it started.
The 7 to 1 rule is simple to calculate and remember however, it’s sadly incorrect.
The correct calculation
The best method of converting human years to dog years is a bit more complicated.
The American Veterinary Medical Association has the following to add to it:
- The very first year of a dog’s life is about 15 years for humans.
- The second year of a dog’s existence equals about 9 human years.
- From that point forward, every human year equals four or five dog years.
Keep in mind that smaller dogs tend to live longer than bigger dogs. Scientists concluded that every 4.4 pounds of body mass reduced a dog’s life expectancy by about a month.