How do I calculate coffee-to-water ratio?

The coffee-to-water ratio is the most important factor in determining the strength and body of your brew. While many people rely on scoops or tablespoons, these methods are notoriously inaccurate because different roasts and bean sizes have different densities. A scale removes the guesswork, allowing you to replicate your favorite cup every single time.

To find your preferred ratio, start with the 'Golden Ratio' of 1:16. For example, if you want to brew 300 grams of coffee, you would divide 300 by 16, which gives you approximately 18.75 grams of coffee. If you prefer a stronger, more intense cup, you might move toward a 1:15 ratio (more coffee, less water). If you prefer a lighter, more tea-like cup, you might try a 1:17 or 1:18 ratio.

Once you have your ratio, the math becomes simple. If you know how much coffee you have, multiply that weight by your ratio to find the amount of water needed. If you know how much water your brewer holds, divide that weight by your ratio to find the amount of coffee needed. This consistency is what separates a 'good enough' cup from a truly great one.

In practice, keep a simple log of your ratios. If you brew a cup that tastes too weak, try a slightly lower ratio (like 1:15) next time. If it tastes too intense or bitter, try a higher ratio (like 1:17). By keeping the ratio consistent and only changing one variable at a time, you will quickly learn exactly how you like your coffee to taste, regardless of the origin or roast level.