Roast Reckoner
Roast Reckoner, 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.
The bird is bought, the guests are invited, and the only remaining question is the one that ruins holidays: how long, at what heat, starting when? The Roast Reckoner computes roasting times from the weight of the joint, so the maths is settled before the oven door closes. It reckons and remembers nothing — you carry the triumph alone.
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
Roast Reckoner 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. Roast Reckoner 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 work out cooking time for a roast by weight?
Give it the weight and what you are roasting, and it computes the time. From there you can count backwards from when you want to sit down, which is the calculation that actually matters.
Will it work on Christmas morning if the internet goes down?
Yes, and this is not hypothetical for everyone. It is a single HTML file running offline in your browser — it computes on the spot, stores nothing, and needs no connection whatsoever. The turkey waits for no router.
Does the Roast Reckoner replace a meat thermometer?
No — it gives you the timing arithmetic, and the thermometer gives you the truth. Use the reckoner to plan and the thermometer to confirm; that combination has saved more dinners than either alone.
Go deeper on Roast Reckoner
More Reckoners
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.