Cyclist's Gears
Cyclist's Gears, 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.
Ask three cyclists about gearing and you will receive four opinions and a diagram drawn on a napkin. Cyclist's Gears does the actual arithmetic — what your chainrings, sprockets, and wheel size add up to on the road — so you can compare setups with numbers instead of folklore. It computes your gearing and keeps nothing; the napkin is finally free for coffee.
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
Cyclist's Gears 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. Cyclist's Gears 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 do I compare gearing between different cassettes or chainrings?
Enter each setup's numbers and it computes what every combination gives you, so you can lay two options side by side. The winter-project decision gets made with arithmetic instead of forum threads.
Does this gear calculator need an account or a connection?
No — it is a single HTML file that runs offline in your browser, computes on the spot, and stores nothing. It works in the shed, next to the bike, where these questions actually come up.
Who needs a bicycle gear calculator?
Tourers gearing down for mountains with luggage, fixed-gear riders choosing their one ratio very carefully, and tinkerers mid-rebuild. Anyone who has ever wondered whether the new cassette will actually feel different — this tells you by how much.
Go deeper on Cyclist's Gears
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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.