Coffee Brew Ratio Calculator

Work out the right coffee-to-water ratio for your brew. Enter any two of dose (grams of coffee), water (grams or millilitres) and ratio (1:N) — leave the third blank and the tool solves it. Includes presets for common methods (espresso, AeroPress, pour-over, French press, cold brew) and a strength read-out. Pure arithmetic, in your browser.