Pet Ages
Reckonersweight 1reckoner · computes, doesn't store
Somebody at the table has just claimed the dog is basically ninety, and now it must be settled. Pet Ages converts your animal's years into a human-equivalent age — with better arithmetic than the old times-seven rule, which was always a slander on young dogs and flattery to old cats. It computes the answer and keeps nothing; the pet's dignity is preserved either way.
This is not a screenshot. It's the real tool, running right here — go on, put something in it.
Open the demo full-screen: /demos/pet-ages.html
Questions people ask
How old is my dog or cat in human years, really?
Enter the animal's age and the tool computes a human-equivalent using better arithmetic than multiply-by-seven — animals age fast early and slower later, and the reckoning reflects that.
Does this pet age calculator collect any information about my pet?
None. It is a single HTML file running offline in your browser — it computes the age on the spot and stores nothing. Your cat's true age never leaves the page, which she would insist upon.
Why is the times-seven rule for dog years wrong?
Because a one-year-old dog is closer to a teenager than a seven-year-old child, and the pace slows from there. A single multiplier cannot capture a curve; the calculator uses arithmetic that can.
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