Reference Card
Reckonersweight 1reckoner · computes, doesn't store
Some knowledge you do not memorise; you keep it where you can look it up in four seconds. The Reference Card is exactly that — a quick lookup card for the conversions and facts you reach for on the road, in the kitchen, or mid-argument. It shows you what you need and stores nothing, like a well-thumbed card in a wallet, minus the wallet.
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/reference-card.html
Questions people ask
What is the Reference Card for?
Quick answers to small recurring questions — the kind you have looked up eleven times and will look up a twelfth. It puts the reference in front of you fast, without a search engine in between.
Does it work with no internet, say on a plane or a mountain?
Yes — that is its natural habitat. The whole card is one HTML file running offline in your browser. Nothing is fetched, nothing is stored, nothing leaves the page, and the file is yours forever.
Who is a pocket reference card for?
Travellers, cooks, students, and anyone whose memory politely declines to hold conversion tables. If you keep a crib sheet taped inside a cupboard door, this is that, made portable.
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 later; the file stays yours either way.