Coffee Ratio Calculator – Calculate perfect coffee-to-water ratio by cups
The coffee ratio calculator determines the perfect coffee-to-water ratio for your desired number of cups and strength preference. Works for drip coffee, French press, pour-over, and cold brew.
Enter the number of cups and choose your coffee type or strength, and you'll get precise gram recommendations for coffee grounds and water amount in milliliters. The golden ratio is usually 60g coffee per liter of water, but it varies by brewing method.
How much coffee per cup for drip coffee?
The most common recommendation for drip coffee is 6–7g coffee grounds per 100ml water, or about 60g per liter. Espresso uses about 7–9g grounds per 25–30ml water. Cold brew uses a stronger ratio: about 100–150g per liter, since it's diluted before drinking.
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Browse all tools →Coffee ratio calculator determines the correct coffee-to-water ratio for different brewing methods. A useful tool for anyone wanting to improve their home coffee's taste and consistency.
Choose brewing method and cup quantity, and the calculator tells you the required coffee and water amounts in grams.
- Calculate coffee-to-water ratio for filter coffee, French press, espresso, and other methods.
- Scale recipes from single cup to large pot.
- Adjust strength to your taste with a simple slider.
The ratio is a generally proven starting point – taste is ultimately personal.
- The golden standard is about 60g coffee per liter of water, but you can adjust.
- Grind size affects taste as much as ratio – experiment and adjust.
- Different roast levels and coffee beans may require different ratios.
Coffee strength and taste depend on many variables beyond just the ratio.
- Water temperature and quality significantly affect extraction results.
- Measuring spoons aren't as accurate as gram scales – scales give the best results.
- The calculator doesn't address caffeine content – see caffeine calculator if needed.