Coffee Brew Ratio
Calculator

Inputs

Water (g)
1,020

Results

Water (g)
1,020
Water (litres)
1.02

Cooking results

Water (g)1,020
Water (litres)1.02

formula-map diagram

Water (g)
1,020
Water (litres)
1.02

Formula breakdown

Formula

water (g) = coffee (g) × ratio n, for a 1 : n brew ratio

= 1020

Note

Simplified model: results are standard culinary ratios and stated per-kilogram rates. Real ovens, flours, ingredients and food-safety requirements vary, so use a thermometer and your own judgement.

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Frequently asked questions

What does a brew ratio like 1:16 actually specify?+

It's the ratio of coffee grounds weight to water weight, so 1:16 means 16 grams of water for every 1 gram of coffee; a common range for drip coffee runs from about 1:15 (stronger) to 1:17 (weaker).

Why measure by weight instead of using a standard scoop?+

Coffee grounds vary in density by roast level and grind size, so a fixed-volume scoop can hold noticeably different weights of coffee between beans, while a weight-based ratio produces consistent strength regardless of which coffee you're using.

How do I adjust the ratio for a stronger or weaker cup?+

Lower the ratio number (like 1:14) for a stronger, more concentrated cup, or raise it (like 1:18) for a weaker one; small changes matter, since even a difference of 1:15 versus 1:16 is noticeable in cup strength.

Does brew method change the ideal ratio?+

Yes, immersion methods like French press typically use a slightly stronger ratio (around 1:12 to 1:15) than pour-over or drip methods (1:15 to 1:17), since the two methods extract flavor differently and taste balanced at different concentrations.

Why does getting the ratio right matter more than just following a recipe?+

Beans vary in freshness, roast, and origin, so a ratio that tastes balanced with one bag might taste under- or over-extracted with another; treating the ratio as your baseline and adjusting slightly to taste per bag gives more consistent results than following one fixed recipe blindly.