Pet Ages
Pet Ages, a small reckoner that computes in your browser and stores nothing. No account, no cloud, no telemetry.
This is not a screenshot. It's the real tool, running right here: go on, put something in it.
Forged into a knife, this tool ages with use: the blades you reach for wear soft, entries you tend keep their bloom, and the years travel with the file through every reforge.
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.
Standing facts
- One HTML file. Opens in any modern browser, on any operating system.
- No account. No login, no sign-up, no e-mail wall.
- No cloud. Nothing leaves your browser: no server, no telemetry, no analytics.
- Yours forever. The file keeps working whether or not Offline.Ltd does.
- Ages with use. Entries you tend keep their bloom; the years travel with the file through every reforge.
In ten years
Pet Ages computes; it doesn't hoard. Open the file in 2036 and it will do the same arithmetic it does today, because the arithmetic is written into the file and nothing about it needs a server to agree.
If Offline.Ltd closes tomorrow, nothing on your machine notices. That isn't a marketing promise; it's simply what a file is.
Getting your data out
There is nothing locked in to get out: copy the numbers, or keep the file. Either way you owe no one a request form. No export queue, no "we'll e-mail you a link within 48 hours", no format that only one vendor can read.
Copy the file to a USB stick, a NAS, a folder your devices already sync. It runs on Windows, macOS, Linux, Android and iOS, online or off, because a browser is the only thing it ever needed.
Who else sees this
Nobody. Pet Ages works out its answer in your browser and forgets it the moment you close the tab: there is no store to breach, because nothing is stored. There is no account, no telemetry, no analytics, and no code in the file that opens a network connection, pull the cable and watch it carry on working. How privacy works across the Reckoners tools →
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.
Go deeper on Pet Ages
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Fits your knife at weight 1. Nothing here is final, Knife follows Life. Reforging within your tier is free, forever. Add it, drop it, reforge it later; the file stays yours either way.