Coffee to Water Ratio Calculator
Work out coffee and water amounts for a given brew ratio and quantity.
Consistent coffee by ratio
The strength of coffee comes largely down to the ratio of coffee to water, and fixing a ratio you like lets you make the same cup every time and scale it up or down. This works out the grams of coffee and water for your chosen ratio and quantity, so a single mug and a full carafe come out equally to taste.
Set the ratio and the amount you are making to get the quantities.
Where to start and why weigh
Ratios are written as coffee to water, and a common filter-coffee starting point is around one to fifteen or sixteen by weight — less water for stronger, more for milder. The real secret is weighing rather than scooping, because a scoop of beans varies and small differences shift the strength noticeably. Once you find the ratio that suits you, weighing to it means every brew lands in the same place.
Questions & answers
What is a good starting brew ratio?
Around one part coffee to fifteen or sixteen parts water by weight for filter coffee, then adjust to taste.
Why weigh the coffee and water?
Scooping is inconsistent, so strength varies. Weighing to a fixed ratio makes every brew repeatable.
Is anything uploaded?
No. The calculation happens in your browser.