How to use a brew ratio
Choose a dose and a ratio.
1
Weigh the coffee
Use whole beans ground just before brewing.
2
Choose a ratio
Start at 1:15 for filter and adjust.
3
Weigh the water
Use a scale rather than a measuring jug for accuracy.
What does this tool do?
A brew ratio compares coffee weight to water weight. A 1:15 ratio is a common starting point for filter coffee; espresso uses a much shorter ratio. This calculator returns both weights and an approximate cup count.
The Formula
Water = Coffee × Ratio; Cups ≈ Water ÷ 240 mlFrequently Asked Questions
What is a good coffee-to-water ratio?
Start around 1:15 to 1:17 for filter coffee. Adjust finer or coarser to taste; espresso uses ratios closer to 1:2.
Should I use grams or scoops?
Grams are more consistent because scoop volume depends on grind and settling. A scale is the single biggest upgrade for repeatable coffee.