Dog Age Calculator

Reolink’s Dog Age Calculator determines your dog’s age in human years based on official American Animal Hospital Association (AAHA) canine life-stage guidelines. To calculate your dog's equivalent human age, the tool evaluates two primary inputs: Date of Birth and Weight & Body Size Class.

By combining these metrics, the calculator delivers a personalized human-age estimate and identifies your dog's current life stage (puppy, adult, or senior).

You can calculate a dog’s age by using a dog age calculator or checking a dog age chart based on your dog’s size and life stage. In general, dogs age faster in their first two years, and after that, their aging speed depends on breed and weight.

Not exactly. The “1 dog year = 7 human years” rule is too simple. A dog’s first year is closer to about 15 human years, and dog aging varies by size. A dog age to human age calculator gives a more accurate estimate.

A 14-year-old dog is usually considered a senior or super senior dog. Their dog age in human years depends on size: small dogs may be around 72 human years, while large dogs may be closer to 88+ human years.

Most dogs are considered senior at around 7 years old, but it depends on size and breed. Large dogs may become senior earlier, while small dogs often age more slowly. Checking your dog’s age in dog years can help you understand when they need senior care.