How much coffee should I use for one cup?

Achieving the perfect cup of coffee starts with consistency, and the most reliable way to achieve that is by moving away from scoops and toward weight-based measurements. The "golden ratio" of coffee brewing is widely accepted as 1:16 to 1:18. This means for every gram of coffee, you use 16 to 18 grams of water. For a standard 8-ounce (approx. 240ml) cup, this translates to roughly 15 grams of coffee for a stronger brew or 13 grams for a lighter, more delicate cup.

Why does weight matter so much? Coffee beans vary significantly in density and size depending on their roast level and origin. A scoop of light-roast beans will weigh more than a scoop of dark-roast beans because light-roast beans are denser. If you rely on volume, your coffee measurement will fluctuate wildly from bag to bag, leading to inconsistent extraction. A digital kitchen scale removes this variable, allowing you to dial in your recipe with precision.

When you start using a scale, you gain control over your brewing basics. If your coffee tastes too weak or watery, you can increase your dose by a gram or two next time. If it tastes too bitter or intense, you can decrease the dose or increase the water. This iterative process is how professionals "dial in" their coffee, and it is the single most effective way to improve your home brewing results.

In practice, start with a 1:16 ratio. Place your brewer on the scale, tare it to zero, and add your ground coffee. Note the weight, then multiply that number by 16 to determine how much water to pour. For example, if you use 20 grams of coffee, you will aim for 320 grams of water. This simple habit transforms coffee from a guessing game into a repeatable, delicious ritual.