Coffee Calculator
Calculate the perfect coffee-to-water ratio for your brew.
The Coffee Calculator helps you brew the perfect cup by calculating the exact amount of coffee grounds and water needed for your desired number of cups.
Enter how many cups you want, the coffee ratio (grams of coffee per cup), and water per cup in mL. The standard golden ratio is about 16g of coffee per 240mL cup (approximately 1:15 coffee-to-water ratio by weight).
Adjust the ratio to your taste: use 14g per cup for lighter coffee or 18-20g for stronger brews. French press typically uses a coarser grind with slightly more coffee, while espresso uses a very different ratio entirely.
Frequently Asked Questions
What is the golden ratio for coffee?
The Specialty Coffee Association recommends about 55g of coffee per liter of water, which is roughly 16g per 240mL cup (about 1:15 by weight).
How many tablespoons per cup?
About 2 tablespoons (roughly 10g) per 6oz cup for standard drip coffee. This calculator uses grams for more precision.
Does the grind size matter?
Yes. Finer grinds extract more flavor from less coffee. Espresso uses fine grinds, drip uses medium, and French press uses coarse.