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Calculator: Coffee-to-Water Ratio

By Maryna Gray on April 09, 2021
Posted in: Coffee Questions
Tags: Coffee-to-Water Ratio

Getting the coffee-to-water ratio right is the key to a great cup of coffee. But measurement is a confusing topic, and “how much ground coffee per cup” doesn’t have a simple answer. Grams to milliliters? Ounces to grams? How many scoops of coffee? What if I like it strong? Do I need a scale? We built this simple calculator to help you figure out how much coffee you need for the perfect morning brew. 

Before you start, there are a few gotchas! First, there are two kinds of “cups." The measuring cup you use to make desserts or follow recipes holds eight fluid ounces of water. But the coffee cup from which you drink holds 6 ounces of coffee. Mugs typically hold a bit more brew, at 8 ounces. We’ve accounted for those differences as a setting in the calculator.

Although using a scale can help you be precise about your coffee-to-water ratio, scoops, measuring cups, and spoons work just fine. The reason coffee professionals use a scale is because coffees vary in density and weight. For example, a scoop of light roast will typically weigh more than the same scoop of dark coffee!

If you want to up your coffee game, we always recommend a few simple tricks: use filtered water; buy fresh, whole bean coffee; and grind right before you brewFor reference, Bean Box single-serve bags (found in our sampler boxes) brew 4 to 5 6-ounce cups of drip or pour over coffee, and Bean Box 12-ounce bags make 32-plus cups of coffee.

Under the hood, the water-to-coffee ratio is determined by the brew method, with a 16-1 (water to coffee) ratio as the standard for drip or pour over coffee. To brew stronger, use more coffee grounds or less water.

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Calculator: Coffee-to-Water Ratio

Coffee to use:
measuring cups0.28
Water to use:
measuring cups4.5
fluid ounces36
"cup" lines on pot6
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