Coffee Calculator

- May 12, 2025
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Calculate the perfect coffee-to-water ratio for your brewing method. Adjust grind size, brewing time, and other parameters to achieve your ideal cup of coffee.

Brewing Method

Coffee Amount

Brew Parameters

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sec

Display Options

About Coffee Brewing

The perfect cup of coffee depends on many factors including the coffee-to-water ratio, grind size, water temperature, and brewing time. Understanding how these variables interact helps you achieve your ideal flavour profile.

Coffee-to-Water Ratios Explained

Coffee-to-water ratio is expressed as 1:X, where X is how many parts water to 1 part coffee. Typical ratios include:

  • 1:12-1:13 - Strong coffee (often for espresso or concentrated methods)
  • 1:14-1:16 - Medium strength (balanced flavour, standard for most methods)
  • 1:17-1:18 - Lighter coffee (brighter, more delicate flavours)
Grind Size & Brewing Time

Grind size should match your brewing method and time:

  • Extra Fine/Fine - For espresso and Turkish coffee (short brew time)
  • Medium-Fine - For pour-over methods like V60 or AeroPress
  • Medium - For drip coffee makers
  • Medium-Coarse - For Chemex or clever dripper
  • Coarse - For French press or cold brew (longer brew time)
Water Temperature

The ideal water temperature for most coffee brewing methods is between 90-96°C (195-205°F). Using water that's too hot can lead to over-extraction and bitterness, while water that's too cool can lead to under-extraction and sourness.

What is the Coffee Calculator?

The Coffee Calculator is a handy tool designed for coffee lovers who want to make the perfect cup. It helps you find the right coffee-to-water ratio based on your chosen brewing method. With options to adjust parameters like grind size and brewing time, you'll be on your way to brewing your ideal cup in no time.

Choosing Your Brew Method

One of the first steps in using the Coffee Calculator is selecting your brew method. Whether you prefer a classic pour-over, a rich espresso, or a refreshing cold brew, the calculator has you covered. Here are some popular brewing methods you can choose from:

  • Pour Over
  • French Press
  • AeroPress
  • Drip Machine
  • Espresso
  • Cold Brew
  • Moka Pot
  • Chemex
  • V60

Custom Ratios for Unique Flavours

If you have a specific taste in mind, the Coffee Calculator allows you to enter a custom coffee-to-water ratio. This can help you achieve a stronger or lighter brew, depending on your preferences. For instance, a ratio of 1:12 yields a stronger coffee, while 1:18 offers a milder taste. Setting your own ratio lets you experiment with flavours until you find just the right one.

Determining Coffee and Water Amounts

The calculator provides a simple way to calculate the amounts of coffee and water needed for your brew. You can choose to calculate based on either the coffee amount or the water amount, depending on what you prefer to start with. Enter the desired amount, and the calculator will provide the necessary adjustments to ensure a well-balanced brew.

Understanding Brew Parameters

To enhance your brewing experience, the Coffee Calculator allows you to enter details about grind size, water temperature, and brewing time. These parameters are key to controlling the extraction and flavour of your coffee. For example, a fine grind works best for espresso, while a coarse grind is suitable for French press. The right water temperature (between 90-96°C) also plays a significant role in achieving the perfect cup.

Visualising Brewing Results

After entering your parameters, the Coffee Calculator gives you a visual representation of your brewing results. The results section displays the coffee-to-water ratio, the exact amount of coffee and water needed, and the expected yield. This visual aid makes it easy to understand how your choices impact your coffee and helps you refine your technique over time.

Learning More About Coffee Brewing

Whether you're a beginner or an experienced brewer, understanding coffee brewing theory is vital. The Coffee Calculator includes sections that explain coffee-to-water ratios, grind sizes, and water temperatures. By learning about these elements, you can adapt your brewing methods for various flavours and strengths. Here’s what you’ll learn:

  • Typical coffee-to-water ratios for different strengths
  • How grind size impacts flavour based on brew time
  • Ideal water temperature for extracting the best flavours

Why Use the Coffee Calculator?

The Coffee Calculator is a must-have for anyone serious about coffee. It simplifies the brewing process and helps you discover your perfect cup, all while allowing for experimentation with different methods and ratios. By using this tool, you can develop your coffee-making skills and enjoy consistently delightful brews.