Coffee Extraction Yield Calculator

Calculate your coffee extraction yield from TDS readings and check it against the SCA Golden Cup standard.

Last reviewed: April 2026
%
g
g
Extraction Yield
22.50%
Optimal
Brew Ratio
1:16.7
SCA Golden Cup
-
Extraction Range (18% - 22% optimal)
0%10%18%22%30%50%
Adjustment Suggestions
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About the Coffee Extraction Yield Calculator

The coffee extraction process is a critical aspect of brewing coffee, as it affects the taste, aroma, and overall quality of the beverage. The process involves extracting the flavorful compounds from coffee beans using hot water, and the method used can significantly impact the end result. Understanding the coffee extraction process can help coffee enthusiasts achieve the perfect cup of coffee every time.

The Importance of Extraction Time

Extraction time is one of the most critical factors in coffee brewing. The longer the coffee grounds are in contact with hot water, the more flavorful compounds they will extract. However, if the extraction time is too long, it can lead to a bitter taste and astringent mouthfeel. The optimal extraction time for a typical drip coffee maker is between 4-5 minutes.

The Role of Water Temperature

The temperature of the water used for brewing coffee is another critical factor in extraction. Water that's too hot can strip away the delicate flavors and aromas of the coffee, while water that's too cold can fail to extract enough flavors. The ideal water temperature for brewing coffee is between 195°F and 205°F (90°C and 96°C).

Grind Size and Extraction

The grind size of the coffee beans also plays a significant role in extraction. Coarsely ground coffee will extract more slowly and more thoroughly, while finely ground coffee will extract more quickly but may result in a bitter taste. The optimal grind size for a drip coffee maker is medium.

Brewing Methods and Extraction

The method used for brewing coffee can also impact extraction. Drip coffee makers use a combination of time and temperature to extract flavors, while espresso machines use high pressure to force hot water through finely ground coffee. Both methods can produce excellent results, but the optimal method may vary depending on personal preference.

Real-World Applications

The coffee extraction calculator is a valuable tool for coffee enthusiasts who want to experiment with different brewing methods and parameters. By adjusting the extraction time, water temperature, grind size, and brewing method, coffee enthusiasts can create a perfect cup of coffee every time. The calculator can help coffee enthusiasts find the optimal parameters for their preferred brewing method, and it can also be used to compare different brewing methods and find the one that produces the best results.

Example 1: Finding the Optimal Extraction Time

Let's say you're using a drip coffee maker and want to find the optimal extraction time for your coffee. You can use the coffee extraction calculator to input the parameters for your coffee beans and brewing method, and the calculator will provide a recommended extraction time. For example, if you're using a medium grind size and brewing with hot water, the calculator may recommend an extraction time of 4.5 minutes.

Example 2: Comparing Different Brewing Methods

Let's say you're trying to decide between using a drip coffee maker and an espresso machine. You can use the coffee extraction calculator to compare the extraction times and results of each method. For example, if you're using a medium grind size and brewing with hot water, the calculator may show that the espresso method produces a more concentrated and flavorful extraction than the drip method.

Common Mistakes

There are several common mistakes that coffee enthusiasts can make when brewing coffee. One of the most common mistakes is using the wrong grind size. If the grind size is too coarse, it can result in a bitter taste and astringent mouthfeel. If the grind size is too fine, it can result in a weak and watery cup of coffee. Another common mistake is using water that's too hot or too cold. Water that is too hot can strip away the delicate flavors and aromas of the coffee, while water that's too cold can fail to extract enough flavors. Finally, another common mistake isn't using the optimal brewing time. If the coffee grounds are in contact with hot water for too long, it can result in a bitter taste and astringent mouthfeel. If the coffee grounds are in contact with hot water for too short, it can result in a weak and watery cup of coffee.

Examples

Here are some examples of how the coffee extraction calculator can be used in real-world scenarios:

Example 1: Finding the Optimal Extraction Time

Let's say you are using a drip coffee maker and want to find the optimal extraction time for your coffee. You can use the coffee extraction calculator to input the parameters for your coffee beans and brewing method, and the calculator will provide a recommended extraction time. For example, if you're using a medium grind size and brewing with hot water, the calculator may recommend an extraction time of 4.5 minutes.

Example 2: Comparing Different Brewing Methods

Let's say you're trying to decide between using a drip coffee maker and an espresso machine. You can use the coffee extraction calculator to compare the extraction times and results of each method. For example, if you're using a medium grind size and brewing with hot water, the calculator may show that the espresso method produces a more concentrated and flavorful extraction than the drip method.

Example 3: Finding the Optimal Water Temperature

Let's say you're using a drip coffee maker and want to find the optimal water temperature for your coffee. You can use the coffee extraction calculator to input the parameters for your coffee beans and brewing method, and the calculator will provide a recommended water temperature. For example, if you're using a medium grind size and brewing with hot water, the calculator may recommend a water temperature of 195°F (90°C).

Example 4: Finding the Optimal Grind Size

Let's say you're using a drip coffee maker and want to find the optimal grind size for your coffee. You can use the coffee extraction calculator to input the parameters for your coffee beans and brewing method, and the calculator will provide a recommended grind size. For example, if you're using a drip coffee maker and brewing with hot water, the calculator may recommend a medium grind size.

Frequently Asked Questions

Extraction yield quantifies what fraction of the dry coffee grounds actually dissolved into your brew.
TDS measures the strength (concentration) of your brew - how much dissolved coffee is in each sip.
The Specialty Coffee Association defines the Golden Cup standard as coffee brewed with an extraction yield of 18-22% and a TDS of 1.15-1.35%. Below 18%, the brew tends to be sour and underdeveloped. Above 22%, it becomes bitter and astringent.
Below 18%, the brew tends to be sour and underdeveloped. Above 22%, it becomes bitter and astringent.
Use a coffee refractometer to read the Total Dissolved Solids percentage from your brewed coffee. If you do not have a refractometer, start with a typical value (1.15-1.35% for drip, 8-10% for espresso).