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Pet Age Calculator (Dog/Cat)
Easily calculate your pet’s age in human years! Use our free online Pet Age Calculator for dogs and cats to know how old they are in human terms. Fast & accurate.
🐾 How the Pet Age Calculator Works
The Pet Age Calculator helps you convert your dog’s or cat’s age into equivalent human years using scientifically-backed age conversion formulas.
For Dogs:
Dog aging isn’t a simple “1 dog year = 7 human years.” Instead, dogs age faster in their early years, and the rate varies based on their breed and size:
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Small breeds age more slowly.
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Large breeds age faster.
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For example:
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A 1-year-old dog ≈ 15 human years.
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A 2-year-old dog ≈ 24 human years.
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After that, each year ≈ 4-5 human years (depending on size).
🐱 For Cats:
Cats also age quickly in their early years:
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A 1-year-old cat ≈ 15 human years.
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A 2-year-old cat ≈ 24 human years.
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Each additional cat year ≈ 4 human years.
Using the Calculator
Just select your pet type (dog or cat) and enter their age in years (and months, if needed). The calculator will instantly show the estimated age in human years, helping you understand their life stage — puppy/kitten, adult, senior, etc.