Brew Ratio
Reckonersweight 1reckoner · computes, doesn't store
Good coffee is mostly a ratio wearing a hat. Brew Ratio does the water-to-coffee arithmetic for whatever you are making — how many grams of grounds for the water you have, or the reverse — so the cup comes out the way it did the day you got it right. It computes and keeps nothing; the ritual stays yours.
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/brew-ratio.html
Questions people ask
How much coffee do I use per litre of water?
That depends on your ratio, and the tool does the division for you: pick the ratio, enter your water or your coffee, and it computes the other side. Same numbers, same cup, every morning.
Does this coffee calculator need an app store or an account?
Neither — it is one HTML file that runs offline in your browser, computes on the spot, and stores nothing. It is yours forever, which is more than most coffee subscriptions can say.
Does it work for tea and other brews too?
The arithmetic is the same honest ratio maths whatever is in the pot — it computes proportions of water to whatever you are steeping. Your taste sets the ratio; it just does the sums.
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.