Mixed Breed age in human years
How old is your Mixed Breed in human years? Enter their age to see it, along with the life stage they are in and when the next one begins.
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How old is my Mixed Breed in human years?
Use the calculator above with your Mixed Breed's current age (in years or by date of birth). The result follows the AAHA non-linear curve adjusted for medium-breed aging speed.
When is my Mixed Breed considered a senior?
It depends on adult weight: from about 10 years for dogs under 33 lb (15 kg), a little earlier for bigger dogs, and from about 8 years for dogs over 88 lb (40 kg). Pick an adult weight in the calculator above to see the age for your dog. Vets count a dog as senior in the last quarter of its expected lifespan (AAHA). For a mix, that is counted from the median lifespan of breeds of the same weight in a 2024 study of UK dogs. Your vet may suggest check-ups twice a year from then on.