Dog Age Calculator
convert dog years to human years
Find out how old your dog is in human years with our accurate, veterinarian-approved formula. Accounts for breed size differences and provides personalized results.
Small
Under 20 lbs
(9 kg)
Medium
21-50 lbs
(10-23 kg)
Large
51-90 lbs
(24-41 kg)
Giant
Over 90 lbs
(41+ kg)
Your Dog's Age Results
Your dog is years old in human years.
This is equivalent to a human.
Frequently Asked Questions
The "multiply by 7" rule is an oversimplification that doesn't account for how dogs actually age. Dogs mature much faster in their early years than humans do. A 1-year-old dog is already sexually mature, which would be equivalent to about a 15-year-old human. The aging process then slows down but varies significantly by breed size.
Yes, this is scientifically proven. Small dog breeds often live 12-16 years, while giant breeds typically live 8-10 years. This significant difference is why our calculator adjusts the conversion rate based on your dog's size category for more accurate results.
The senior age depends on your dog's size:
- Small breeds (under 20 lbs): 11-12 years
- Medium breeds (21-50 lbs): 9-10 years
- Large breeds (51-90 lbs): 7-8 years
- Giant breeds (over 90 lbs): 6-7 years
Our calculator is based on the latest veterinary research on dog aging and is approved by veterinarians. While no calculator can be 100% precise (as individual dogs age differently based on genetics, health, and lifestyle), this provides a much more accurate estimate than the traditional "multiply by 7" method.
Absolutely! That's why we included months as an option in our calculator. Puppies mature very quickly in their first year. For example, a 6-month-old puppy is roughly equivalent to a 10-year-old human in terms of physical and mental development.