Dog & Cat Age Calculator
How old is your pet
in human years?
Forget the "×7" myth — this uses the more accurate, non-linear aging curves vets actually reference.
Human-Equivalent Age
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Why not just ×7?
📊Pets age fastest early in life, then slow down — a 1-year-old dog is already roughly equivalent to a 31-year-old human, not 7. The old "multiply by 7" rule badly underestimates young pets and overestimates old ones.
🐕Larger dog breeds age faster in their senior years than small breeds, despite maturing at a similar rate early on — this is why giant breeds often have shorter lifespans.
🐈Cats follow a more consistent curve: about 15 human years in the first year, 24 by age 2, then roughly 4 more human years per cat year after that.