Coffee-to-Water Ratio Guide: How Much Coffee to Use

Hey coffee lovers, grab a mug and join us while we explore one of the more important nuances of brewing coffee that you truly enjoy. We’re going to talk about the coffee-to-water ratio. We’ll break down what it is, why it’s recommended, the best starting ratios for different brew methods, and how to adjust your recipe to dial in your preferred cup.

It’s one of the key parts of making excellent coffee, alongside the brew method, the origin and roast, water temperature, and grind size. But today, let’s talk ratios.

The Golden Ratio: 1:16

Why is 1:16 the “golden ratio?” The Golden Ratio is an average for most standard brew methods. It means how much ground coffee you use compared to water. 1:16 means you use 1 part coffee to 16 parts water. Using a base ratio also gives you a consistent starting point that lets you easily scale your recipe up or down.

Just like everything in enjoying coffee, the Golden Ratio is a recommendation, not a rule! Some people suggest 1:17 or 1:18. Different coffees, grind sizes, and brew methods also affect the way your coffee extracts and tastes. A coffee-to-water ratio is an important part of our coffee brewing guide that determines how strong your coffee is. It’s a good starting point if you switch up your coffee or brew method. This flexibility means there is no right or wrong recipe; you can use as much or as little of our certified organic, Fair Trade coffees in your recipe as you want. 

Coffee-to-Water Ratio by Brewing Method 

The ratios often vary significantly with the brewing method, because different methods add water differently (gravity pour vs. pressure) and keep the water in contact with the coffee for different lengths of time (gravity vs. immersion). The intended strength of the brew plays a significant role, too.

Here are some of our favorite recipes and ratios for each common brew method.

 

Note: you can weigh your water using a gram scale or by volume, since 1ml of water conveniently weighs ~1g.

Why Espresso and Cold Brew Are Different

You may be wondering why espresso and cold brews have different ratios. This difference is due to the different techniques and intended results.

Espresso uses a 1:2 ratio because it's a pressurized, concentrated extraction. Unlike the other ratios in the table, coffee professionals typically describe espresso as the weight of dry coffee compared to the yield of espresso. While you can drink it straight, people frequently dilute espresso for use in other coffee beverages, like Americanos or lattes.

Cold brew is an immersion slow-brewing method. Our recipe uses a roughly 1:11 ratio for a similar reason as espresso: we designed it so you can dilute it with ice, milk, or water before drinking, depending on your preference.

Why a Scale Beats a Scoop

So, why do we give the amounts by weight instead of by volume? And why do we list grams instead of ounces? The answer to both questions is the same: precision.

Scoops and even kitchen measuring spoons can be inconsistent in volume from one manufacturer to the next. But even more importantly, different grind sizes and coffee origins, varieties, and roast levels can have varying densities (think of density as how much mass (weight) fits into a specific volume).

If you scoop a less dense bean, you’ll get less physical coffee, resulting in a weaker brew than if you scoop a more dense bean with the exact same scoop, which would result in a stronger brew. This is why weighing is best for precision.

Using grams instead of ounces makes it easier to measure the relatively small amounts of coffee used in many recipes since 1oz = 28g. This makes it easier to be precise, especially when brewing a single-serve method like a pour-over.    

Scoops, Tablespoons, and Grams: Converting Between Measures

Weighing coffee isn’t always practical with busy lifestyles or available gear, though, so here’s a helpful chart for anyone without a scale to convert between weights and volumes. Just keep in mind that different beans can have different densities, so the same volume of coffee may weigh more or less depending on the beans or the roast.

Coffee scoops are usually 2 tablespoons, but they’re not all the same. Manufacturers sometimes design their scoops for a specific brew system, rather than a standard size. But here, we’ll assume your scoop is 2 tablespoons.

How to Adjust Your Ratio to Taste

The golden ratio is a fantastic starting point that tends to satisfy most coffee lovers across most standard brew methods. But the best part of the ratio is how easy it is to adjust to your preferred strength.

Pro Tip: Change only one variable at a time. If you change your beans, grind size, or brew method, that can also affect your preferred ratio! 

If Your Coffee Tastes Weak or Watery

If you find your coffee tastes too watery or weak for your preferences, adjust the ratio by increasing the amount of coffee. If you started the 1:16 French Press recipe above with 56g of ground coffee but you want it stronger, try 1:15 instead. Take your 900g of water and divide it by 15, which works out to 60g of ground coffee. 

If Your Coffee Tastes Too Strong or Bitter 

If you used a 1:16 ratio in that same French Press recipe and found that your coffee was too strong, try a 1:17 ratio next time. Divide that 900g of water by 17, which is ~53g of ground coffee.  

Does Roast Level Change the Coffee-To-Water Ratio?

The answer to this question is both yes and no. Why? Because dark roasted coffees are less dense than medium-roasted coffees, and even less so than light roasts. Longer roasting removes more water and breaks down the bean's structure, causing it to expand.

This means that roast level matters if you’re measuring by volume since 2 tbsp of a darker roast will weigh less than the exact same volume of many lighter roasts. So, if you switch from a dark to a light roast and use the same scoop, you may need to reduce the volume of your light roast beans to get your preferred strength.

But if you weigh your coffee instead of scooping, the roast level doesn’t change the ratio at all. Weigh the same amount of coffee regardless of how much physical volume it occupies.

Frequently Asked Questions

Does the Coffee-To-Water Ratio Change for Different Beans?

It depends on whether you scoop or weigh your coffee. By volume, different roasts and origins have different densities, so the scoop amount may need adjusting. By weight, the ratio stays the same regardless of bean or origin.

How Much Coffee Do I Use for 4 Cups of Water?

For 4 standard measuring cups of water, assuming a 1:16 ratio, you can use about 55-60g of ground coffee. For an autodrip machine, you may prefer the 1:18 ratio in our recipe above, which would be about 53g of ground coffee.

Dial in Your Ratio and Start With Beans Worth Measuring

Coffee recipes can be as straightforward or adventurous as you want, but dialing in your coffee-to-water ratio is the easiest way to get consistent, delicious results. Once you understand how standard ratios work, you can tweak them for your favorite brew method or a new roast or origin to find the balance you enjoy in your cup.

But great recipes always start with great beans. Pair your morning recipe with our certified organic, Fair Trade coffees, which we always roast and optionally grind fresh to order, and taste the difference that careful sourcing through smallholder farmer partnerships makes in your morning cup.