🐶 Age in Dog Years
Enter your birthday and see your age in dog, cat, and hamster years.
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How to use Age in Dog Years
- Enter your numbers
Use the sliders and boxes.
- Watch it update
Results change live as you type.
- Read the breakdown
Totals, bars and a silly verdict.
- Save or share
Save results to compare later.
What makes Age in Dog Years fun
Dog, cat, hamster.
Exact age.
No submit button needed.
The formula is shown on the page.
About this tool
Age in Dog Years turns your human age into animal years. Enter your birthday and see your age in dog, cat and hamster years, using popular rough rules of thumb.
The old "multiply by 7" rule is a simplification — real dog ageing is faster early on and differs by size. This calculator is for fun; for your actual pet's age, ask a vet.
Who it's for
Fun card facts.
Maths fun.
Trivia.
Tips & tricks
- Share it on your birthday.
- Compare with your siblings.
- Ask a vet about real pet ages.
Little questions about Age in Dog Years
Is it really 7 dog years per human year?
That is a popular simplification; real ageing differs by breed, size and life stage.
How are cat years calculated here?
A rough average rule, for fun.
Is this for my pet's age?
No — it converts your age; ask a vet about your pet.
Is Age in Dog Years free?
Yes. Age in Dog Years is free, needs no sign-up and runs in your browser on phones and computers.
Is my data stored?
Only results you save, in your own history linked to a random ID — never your name.
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