Coffee Ratio Calculator
Calculate how much ground coffee and water you need for any number of cups using your preferred brew ratio.
How to use this tool
- Enter cups of coffee and brew ratio (water:coffee) in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your water and the full breakdown beneath it.
Frequently asked questions
- What is the golden ratio for coffee?
- The Specialty Coffee Association (SCA) recommends 55 g of coffee per litre of water (about 15:1 by weight) as the standard brew ratio for filter coffee.
- How many tablespoons of coffee per cup?
- A rough rule is 1–2 tablespoons of ground coffee per 6 fl oz cup, depending on grind and strength preference. Weight-based measurement (grams) is more accurate.