How the calculator works

Common rules of thumb from everyday coffee practice are the starting point, such as 60 grams per litre for filter and French press (around 1:16) and 1:2 for espresso. Water that stays in the coffee grounds is not deducted – slightly less than the amount of water ends up in the cup. With “Mild” and “Strong” you shift the amount by about 10 and 15 percent respectively.

These values are a start, not gospel. Bean, roast, water and grinder change the result. Change one variable at a time and make a note of what tastes best to you.

Why weigh?

A spoonful varies a lot with the bean and roast level. A scale with a timer makes your cup repeatable – that is the single biggest step towards better coffee at home.