Pet Age Calculator – Convert Dog & Cat Years to Human Years
Use our free pet age calculator to convert your dog or cat's age to human years. Our dog age calculator and cat age calculator use breed-specific formulas to accurately determine your pet's equivalent human age, helping you understand their life stage and provide age-appropriate care.
Size affects aging rate - larger dogs age faster
How Pet Age Calculator Works
Dog Age Calculator Formula
The dog age calculator uses a breed-specific formula: the first year equals 15 human years, the second year equals 9 human years, then each subsequent year varies by size. Small dogs age at approximately 4 human years per dog year, medium dogs at 5 years, large dogs at 6 years, and giant breeds at 7.5 years per dog year.
Cat Age Calculator Formula
The cat age calculator uses a simpler formula: the first year equals 15 human years, the second year equals 9 human years, then each subsequent year equals 4 human years. This formula works for most cats regardless of size.
Frequently Asked Questions
How do you calculate pet age in human years?
Pet age conversion varies by species and size. For dogs: the first year equals 15 human years, the second year equals 9 human years, then it varies by size (small dogs age slower than large dogs). For cats: the first year equals 15 human years, the second year equals 9 human years, then each year equals 4 human years.
Do larger dogs age faster than smaller dogs?
Yes, larger dog breeds generally age faster than smaller breeds. Giant breeds may age at a rate of 7.5 human years per dog year after age 2, while small breeds age at about 4 human years per dog year. This is why larger dogs typically have shorter lifespans.
What are the different life stages for pets?
Pets go through several life stages: Puppy/Kitten (under 1 year), Young Adult (1-2 years), Adult (2-7 years for dogs, 2-7 years for cats), Mature Adult (7-10 years for dogs, 7-11 years for cats), and Senior (10+ years for dogs, 11+ years for cats). Each stage has different care requirements.
Related Tools & Resources
Disclaimer: Age conversion to human years is an estimate based on general aging patterns. Individual pets may age differently based on genetics, health, and lifestyle. The life stage and recommendations are general guidelines. Always consult with your veterinarian for personalized care recommendations based on your pet's specific needs and health status.