Pet Age Calculator
Convert your pet’s age into human years. Dogs support size-based estimates.
Estimated human age
Estimates vary by breed and health—use as an approximate guide.
Pet Age Calculator – Convert Dog & Cat Years to Human Years Online
Curious how old your dog or cat is in human years? Use our free pet age calculator to find out instantly! Whether you own a small dog, large dog, or a cat, our calculator converts pet age to human age using scientifically backed formulas.
Why Use a Pet Age to Human Age Calculator?
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Understand your pet’s real age in human terms
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Track health and life stages better
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Plan diet, exercise, and vet visits accordingly
How Our Dog Age Calculator Works
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Small breed dogs age slower
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Large breeds age faster
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Formula: First 2 years = ~24 human years; each year after varies by size
How Our Cat Age Calculator Works
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First year = 15 human years
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Second year = 24 human years
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Each year after = ~4 human years
Enter your pet’s age in years/months to instantly get the human age equivalent.
FAQs About Pet Age Conversions
Q: Is dog age really 7 years = 1 human year?
A: No, that’s a myth. Dogs age differently depending on breed and size.
Q: Do cats live longer than dogs?
A: On average, yes. Cats often live 15–20 years, equal to 70–90 in human years.
Q: Why does breed size matter for dogs?
A: Larger dogs tend to age faster and have shorter lifespans compared to smaller breeds.
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