Cold Brew Ratio Calculator

- May 12, 2025
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Calculate the perfect coffee-to-water ratio for your cold brew. Cold brew typically uses a higher coffee-to-water ratio than hot brewing methods, resulting in a smooth, concentrated coffee that can be diluted before drinking.

Calculation Type

Cold Brew Strength

Brewing Parameters

Dilution (Optional)

Display Options

About Cold Brew Coffee

Cold brew coffee is made by steeping coffee grounds in cold or room temperature water for an extended period (typically 12-24 hours). This method extracts different compounds from coffee than hot brewing, producing a smoother, less acidic coffee with unique flavour characteristics.

Cold Brew Ratios Explained

Cold brew typically uses a higher coffee-to-water ratio than hot brewing methods:

  • 1:4 ratio - Concentrate (needs to be diluted before drinking)
  • 1:5 ratio - Strong brew (may be diluted slightly)
  • 1:7 ratio - Medium strength (standard cold brew)
  • 1:8 ratio - Mild brew (ready to drink)
Grind Size & Brewing Time

For cold brew, coarser grinds are generally preferred:

  • Coarse grind - The most common for cold brew, reduces sediment and bitterness
  • Medium-coarse grind - Increases extraction but may result in more sediment
  • Brewing time - Longer brewing (16-24 hours) extracts more flavour but can increase bitterness
Storage & Shelf Life

Cold brew concentrate can be stored in the refrigerator for up to 2 weeks. The prepared (diluted) cold brew is best consumed within 3-4 days for optimal flavour.

Understanding the Cold Brew Ratio Calculator

The Cold Brew Ratio Calculator helps coffee lovers find the right balance between coffee and water. Cold brew coffee is different from hot coffee. It often needs a higher coffee-to-water ratio for that rich flavour. This handy tool takes the guesswork out of making your cold brew just right, whether you want it strong or mild.

Selecting Your Calculation Method

When using the calculator, you can choose to calculate the ratio based on either the amount of coffee or the amount of water. This flexibility allows you to tailor your brewing experience based on what you have on hand. Here’s a quick overview of the options:

  • Calculate by Coffee Amount: Input the amount of coffee you have.
  • Calculate by Water Amount: Input the amount of water you want to use.

Choosing Your Ideal Cold Brew Strength

The calculator offers different strength options to match your taste. You can easily select from mild to strong, or even create a custom ratio. This is especially useful for those who want to experiment with flavours and concentrations. The strength options include:

  • Mild (1:8 ratio)
  • Medium (1:7 ratio)
  • Strong (1:5 ratio)
  • Concentrate (1:4 ratio)

Adjusting Brew Parameters

Another feature of the calculator is the ability to customise your brew parameters. You can set the grind size, brew time, and even the brewing method. This ensures that your cold brew turns out just how you like it. Choosing a coarser grind is typically best as it reduces bitterness in the final product.

Adding Dilution Options

If you prefer a lighter drink, the calculator allows you to factor in dilution. You can specify how much water you'll add to your concentrate after brewing. This way, you can ensure that your cold brew is perfect for your palate. You can select from various dilution ratios or even set a custom one.

Getting Accurate Measurements

Accuracy matters in brewing great coffee. The calculator helps you measure both coffee and water in different units, such as grams, ounces, millilitres, and cups. This flexibility is perfect for anyone, whether you're using a kitchen scale or measuring cups. The interface makes it easy to ensure you're getting your measurements just right.

Visualising Your Results

Once you’ve entered your parameters, the calculator provides visualisation tools to help you understand your brew. This includes a graph that shows the coffee-to-water ratio and Other important metrics. It can help you see how different ratios affect your cold brew, which is valuable for perfecting your process.

Mastering Cold Brew Coffee

Using the Cold Brew Ratio Calculator is a great way to master your brewing technique. Whether you’re new to cold brew or a seasoned pro, this tool can enhance your experience. With the right ratio, grind size, and brew time, you can create your ideal cup of cold brew coffee every time.