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Pour Over / Drip (1:16) French Press (1:15) Espresso (1:2) Aeropress / Light Body (1:17) Cold Brew Concentrate (1:8) Custom Ratio

Brewing Recipe:

You need: 0 grams of coffee.

Based on 0ml of water at a 1:0 ratio.

function updateRatioPreset() { var method = document.getElementById('calcMethod').value; var ratioInput = document.getElementById('brewRatio'); if (method !== 'custom') { ratioInput.value = method; } } function calculateBrew() { var water = parseFloat(document.getElementById('waterVolume').value); var ratio = parseFloat(document.getElementById('brewRatio').value); var resultArea = document.getElementById('brewResultArea'); var groundsDisplay = document.getElementById('groundsResult'); var resWater = document.getElementById('resWater'); var resRatio = document.getElementById('resRatio'); if (isNaN(water) || isNaN(ratio) || water <= 0 || ratio <= 0) { alert("Please enter valid positive numbers for water and ratio."); return; } var coffeeNeeded = (water / ratio).toFixed(1); groundsDisplay.innerText = coffeeNeeded; resWater.innerText = water; resRatio.innerText = ratio; resultArea.style.display = 'block'; }

Mastering the Coffee Brew Ratio

Understanding the coffee-to-water ratio is the single most important step in moving from a "decent" cup of coffee to a "cafe-quality" experience at home. The brew ratio determines the strength (TDS) and extraction level of your coffee, ensuring your morning brew is neither bitter nor watery.

What is a Brew Ratio?

A brew ratio is the weight of dry coffee grounds relative to the weight of the water used for brewing. For example, a 1:16 ratio means for every 1 gram of coffee, you use 16 grams (or milliliters) of water. Because 1ml of water weighs exactly 1g, these measurements are interchangeable.

Standard Ratios by Method

• Espresso (1:2): Highly concentrated. 18g of coffee yields 36g of liquid espresso.
• Pour Over (1:15 to 1:17): The "Golden Ratio" range. 1:15 produces a heavier body, while 1:17 is tea-like and bright.
• French Press (1:15): A slightly tighter ratio compensates for the immersion brewing method to provide a full, rich mouthfeel.
• Cold Brew (1:8): Typically brewed as a concentrate intended to be diluted with water or milk later.

Realistic Example Calculation

If you are brewing a standard 12oz mug (approximately 350ml) using a V60 pour-over at a 1:16 ratio, the calculation is:

350ml ÷ 16 = 21.8g of Coffee

Using a digital scale is highly recommended over volumetric measurements (scoops), as different roasts have different densities. Darker roasts are less dense and take up more space in a scoop compared to light roasts.

How to Adjust for Taste

If your coffee tastes too strong or intense, increase the second number (e.g., move from 1:15 to 1:17). If the coffee feels thin or weak, decrease the second number (e.g., move from 1:16 to 1:14). Small adjustments of 1 gram can significantly change the flavor profile of your favorite beans.