Daily Figures Edition No Sign-Up Free Forever Vol. XII — No. 204
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Coffee Ratio Calculator

Get the grams of coffee for your water at any brew ratio.

Coffee
Grams of coffee.
Details
Tablespoons
Water
Ratio
 
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How the Coffee Ratio Calculator Works

Great coffee comes down to the ratio of coffee to water. A common starting point is 1:16 — one gram of coffee for every sixteen grams (millilitres) of water — which the Specialty Coffee Association calls the golden ratio. This calculator takes your water amount and ratio and tells you exactly how much coffee to grind.

A lower number (1:15) makes a stronger brew, a higher one (1:17–18) a lighter cup. Weighing coffee is far more consistent than scooping, since bean density varies.

coffee (g) = water (g) ÷ ratio

Frequently Asked Questions

What is a good coffee-to-water ratio?

1:16 is the classic golden ratio — 1 g of coffee per 16 g of water. Use 1:15 for stronger, 1:17 for lighter.

How much coffee for 500ml of water?

At 1:16, about 31 grams — roughly six tablespoons of ground coffee.

Why weigh coffee instead of scooping?

Bean size and grind change how much a scoop holds; weighing gives the same strength every time.

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