How old is your pet in human years?
An estimate for 20 common pets, based on typical lifespan for each species.
This is a general estimate, not a veterinary assessment. Dog and cat results use a realistic early-aging curve; other species are estimated from typical average lifespan for that animal. Actual aging varies by breed, size, and individual health — ask your vet for guidance specific to your pet.
Estimate pet age in human years
Select the type of pet and enter its age to get a simple human-age comparison. Dogs and cats use an early-aging curve, while other supported animals use a lifespan-based estimate to provide an easy point of reference.
Pet aging differs by species, breed, body size, genetics, and health. Treat the result as an educational estimate rather than a veterinary measure of biological age.
Related tools: Use the human age calculator · Explore all calculators
Frequently asked questions
Is the "1 year = 7 human years" rule accurate?
Not really — aging is faster in early life and slower after, so dogs and cats use a curve rather than a flat multiplier.
How is this calculated for pets other than dogs and cats?
We compare the pet's age to that species' typical average lifespan, scaled against an average human lifespan. It's a simplified estimate, not a species-specific aging curve.