Dog Age Calculator by Breed

Dog age calculator finds the age of your dog in equivalent human years by considering specific breed characteristics or weight range.

Dog Years To Human Years:

One year of a dog’s life is equal to seven years of a human. Ancient people believed that dogs age faster than humans. The American Veterinary Medical Association categorizes it as follows:

• First year of medium-sized dogs is equivalent to 15 human years
• Second year of dog's life is approximately equivalent to nine years of human age
• Every human year would be roughly equivalent to five years for a dog

The misconception that 1 human year equals 7 dog years was popularized in the 1950s based on assumptions about average lifespans.

Formula For Human Years To Dog Years:

The formula to figure out the dog's age varies from breed to breed. The general formula is:

Human Years to Dog Years = ( Human Years - 2 ) x 4 + 21

Generally, dog breeds have been divided into followings and their age increases at different speeds.

What Are Common Signs of Aging In Dogs?

As dogs age, they might display various signs indicating the normal aging process. Common signs of aging in dogs include:

• Greying hair
• Poor eyesight, cloudy eyes
• Trouble hearing
• Stiff muscles and joints, arthritis
• Lower activity level
• Behavioural changes such as aggression, fear, anxiety, confusion, inappropriate elimination, irritability.

Why Do Smaller Dogs Live Longer Than Larger Dogs?

In fact, smaller dogs live longer than large dogs. Current studies indicate that a dog’s life expectancy is decreased by 1 month for every 2 kilograms of body mass. General reasons are as follows:

• Larger dogs tend to cave to age-related illnesses rather than smaller dogs
• Smaller dogs have faster metabolic rates, genetic factors that contribute to a longer lifespan, and less strain on the critical organs
• Due to their accelerated growth, larger dogs are at higher risk of abnormal cell growth and cancerous changes

How To Use This Calculator?

To use a dog age calculator, simply input the required values and the calculator will provide you with the equivalent age in human years.

Required Values:

• Choose the version that you want to calculate dog years
• Enter the values of each parameter
• Tap on “calculate”

Results Summary:

• Dog's age according to the human years
• Dog Breed Group
• Recommended for
• Maintenance Level
• Life Span
• Height & Weight
• Temperament
• Hypoallergenic
• Colours

Breed Dog Age Chart:

Here’s how old is a dog in human years compared with human age. Note that this dog age calculator is for the every-size breed of a dog below 20 years. Consult the chart to see the difference between various sizes of dogs;