Coffee Ratio for 1 Cup (15:1)
Calculate how much coffee you need to brew 1 cup at the standard 15:1 water-to-coffee 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.
Brewing a single cup of coffee at the 15:1 ratio requires about 16 to 17 grams of ground coffee for a well-balanced cup.
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.