About The Grind Calc

Why this site exists

Getting the coffee-to-water ratio right is the single biggest lever for better coffee at home — and the math is just annoying enough that most people guess. This site does the arithmetic for you: enter how much coffee or water you have, pick a ratio, and get amounts in grams, tablespoons, milliliters, cups, and fluid ounces.

How the calculators work

Every calculator uses ratios by weight — 1 part ground coffee to X parts water. Each brew method has its own page with a sensible default ratio, method-specific tips, and answers to common questions:

• French press — 1:15 default ratio
• Pour over — 1:16 default ratio
• Cold brew — 1:8 concentrate default ratio
• Chemex — 1:16 default ratio
• AeroPress — 1:15 default ratio
• Moka pot — 1:10 default ratio
• Drip coffee maker — 1:16 default ratio
• Espresso — 1:2 default ratio
• Turkish coffee — 1:10 default ratio

Conversions assume a level tablespoon of ground coffee weighs about 5 grams and a US cup is 237 ml. Tablespoon weights vary with grind size and roast, so weighing coffee in grams is always more accurate.

Free, no sign-up

Everything on this site is free to use, with no accounts and no downloads. The calculators run entirely in your browser. If you spot an error or have a suggestion, please reach out via the contact page.