MAD HATTER COFFEE CO. · INDEPENDENT ROASTERS ACROSS AMERICA
A small tool for a better cup

Coffee, water.
Your numbers.

Scale a recipe without doing the maths. Choose the amount of coffee or water you have, then set your brew ratio.

20 g coffee + 320 g water

At a 1:16 ratio, use 16 grams of water for every gram of coffee.

What does 1:16 mean?

It means one part coffee to sixteen parts brew water by weight. Multiply coffee grams by 16 to find the water amount, or divide water grams by 16 to find the coffee amount. For example, 500 g of water at 1:16 uses about 31.3 g of coffee.

Choose a starting point, then taste.

Our pour over starting recipe uses 20 g of coffee and 320 g of water, or 1:16. The roaster’s own recipe is worth trying first. The ratios here are for filter coffee and immersion brews such as French press; they are not espresso yield ratios or cold brew concentrate recipes.

Water shown is what you add to the brewer. Your finished drink will weigh less because the grounds retain water. A 1:14 ratio is more concentrated than 1:18 at the same coffee weight, but grind, water temperature, contact time and the coffee itself also affect the result.

Remember what worked

Keep a note.
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A few recipes to keep nearby

Read the full brewing starting points ↗

This tool calculates recipe weights. It does not measure extraction or guarantee a particular flavor.

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