The formula for converting dog years to human years

Many individuals hold to the notion that “1 year of dog age is equivalent to 7 years of human age.” Are there any genuine controls here? Check out the story from below to learn more. The formula for converting dog years to human years

How to Calculate Dog Years to Human Years?

The American Veterinary Medical Association, on the other hand, divides it down like this as a general rule:

  • The first year of a medium-sized dog’s life is comparable to 15 human years.
  • A dog’s second year is about equivalent to a human’s ninth year.
  • After then, a dog’s year would be around five years for every human year.

How Do Researchers Come Up With Those Numbers?

It’s impossible to determine for sure since there are so many variables to consider, but the AVMA says: “Cats and small dogs are often considered’senior’ at seven years old, although we all know they’ve got plenty of life remaining in them at that age.” Larger-breed dogs have shorter lifespans than smaller breeds, and they are frequently considered senior when they reach the age of 5 to 6 years.

aThe’senior’ categorization is based on the fact that pets age more quickly than humans, and doctors begin to notice more age-related issues in these animals. Dogs do not mature at the rate of 7 human years for every year in dog years, contrary to common perception.”

The Great Dane is a good example. According to the Great Dane Club of America, the typical life expectancy is 7–10 years. As a result, a four-year-old Great Dane would be 35 years old in human years. Please remember that these are just estimations.

Dogs aren’t tracked by the National Center for Health Statistics. Instead, pet-insurance firms, breed-club surveys, and veterinary facilities are the three primary sources of information on their lifespan.

Why Do Smaller Dogs Live Longer than Larger Dogs?

For years, experts have been perplexed by this phenomena, and study has failed to explain the link between body mass and a dog’s lifetime.

Large animals, such as elephants and whales, live longer on average than tiny mammals, such as mice. So, why do little dogs live longer on average than huge dogs?

According to researcher Cornelia Kraus, an evolutionary biologist at the University of Göttingen in Germany, “their lives appear to unravel in rapid speed,” and “their lives seem to unwind in fast motion.” According to researchers, every 4.4 pounds of body mass decreased a dog’s life expectancy by nearly a month.

The explanation for this is uncertain, while Kraus proposes a few theories, including that bigger dogs may succumb to age-related ailments sooner, and that their faster development may lead to a greater risk of aberrant cell proliferation and cancer mortality. Future research is being planned to better understand the relationship between growth and death.


Canine gerontology is a rising area of research, as dog owners want to not only lengthen but also enhance the quality of their time with their dogs. The Dog Aging Project is researching the aging process in dogs, with the goal of “delaying aging and promoting healthy lifespan” via geroscience research.

Whether measured in human or dog years, there is beauty and charm at every stage of our dogs’ maturation and aging. Senior dogs are exceptionally charming and tragic, with their gray muzzles and knowledgeable looks.

2019 Epigenetic Clock Study

Researchers at the University of California San Diego proposed a novel approach for measuring canine age based on variations in human and dog DNA throughout time in a 2019 study. Methyl groups are added to DNA molecules in both species as they age, modifying DNA activity without changing the DNA itself. As a consequence, scientists have utilized DNA methylation to examine aging in humans using a “epigenetic clock.”

The researchers used targeted DNA sequencing on 104 Labrador Retrievers ranging in age from 16 to 16 years old in order to compare dogs’ epigenetic clocks to humans’. They were able to create a formula for converting the natural logarithm of a dog’s age to “human years” by multiplying it by 16 and adding 31 ( 16ln(dog age) + 31 = human age.   This natural logarithm calculator may assist you.

Because the research only looked at a particular breed, your dog’s “human age” based on this formula may differ somewhat. Because various breeds mature differently, the UCSD method may not have enough variables to provide solid findings. Regardless, the new scientifically validated method is much more beneficial than the long-debunked “multiply by 7” myth for determining a dog’s “human age.”

Did You Know?

People have evidently been comparing human and canine years for millennia.

“If the reader wisely considers all that is laid down, he will find here the end of the primum mobile; a hedge lives for three years, add dogs and horses and men, stags and ravens, eagles, enormous whales, the world: each one following triples the years of the one before,” the artisans who built the Cosmati Pavement in Westminster Abbey inscribed into the floor in 1268.

A dog can live to be nine years old, whereas a man may live to be eighty. Between 1268 until the mid-twentieth century, if these figures are correct, th Dogs’ lifespans were shortened by a year, and humans lost almost a decade. Our lifespans have shifted in the other way, which is fortunate for both species.

The idea that a dog’s lifespan is equivalent to 7 years in a human life. Simple math shows that a dog’s lifespan is shorter than a person’s. The age, breed, and size of the dog all affect how long they live.

Michael Hogan

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