Dog Years Calculator

Calculate your dog's age in human years using the latest veterinary research, plus learn about age-related anxiety issues.

Calculate Your Dog's Age

Dog's Age (in years)

Enter age in years (decimals allowed, e.g., 2.5)

Dog Size

Smaller dogs age slower than larger breeds

This chart shows how dog age converts to human years based on size. Larger dogs age faster than smaller dogs after age 2.

Dog Age	Small	Medium	Large	Giant
1 years	15 years	15 years	15 years	15 years
2 years	24 years	24 years	24 years	24 years
3 years	28 years	29 years	30 years	31 years
5 years	36 years	39 years	42 years	45 years
7 years	44 years	49 years	54 years	59 years
10 years	56 years	64 years	72 years	80 years
12 years	64 years	74 years	84 years	94 years
15 years	76 years	89 years	102 years	115 years

The old "multiply by 7" rule is outdated and inaccurate. Modern veterinary science shows dogs age much faster in their first two years:

•Year 1: Equivalent to 15 human years (rapid growth and development)
•Year 2: Adds 9 more years (reaching young adult at 24 human years)
•Year 3+: Varies by size—small dogs add ~4 years per year, giant breeds add ~7

Source: American Veterinary Medical Association (AVMA) and recent genetic research on dog aging published in Cell Systems journal.

Understanding your dog's life stage helps you:

1.Recognize age-appropriate behaviors vs. anxiety symptoms
2.Identify medical causes - pain and cognitive decline often present as anxiety
3.Choose appropriate interventions - puppies need socialization, seniors need medical support
4.Set realistic expectations - senior dog anxiety may need medication, not just training