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Coffee Ratio Calculator

Works out the coffee-to-water ratio for pour over, French press and cold brew, which are all different. Decide how much you want to drink and it tells you how many grams to grind.

🍳 Numbers to start from — adjust to your own kitchen and taste.
Coffee 20g · Water 300ml

Medium grind · 2:30–3:00

20g

Coffee

300ml

Water

1 : 15

Ratio

The ratio is only a starting point. At the same ratio, water temperature (90–95°C) and grind size still change the taste a lot. Bitter and muddy means grind coarser or drop the temperature; thin and sour means grind finer or brew longer.

What this tool does

  • Ratio per brewing method
  • Coffee weight from the cup size
  • Or work from the coffee weight instead
  • Grind size and brew time

Other cooking tools

Ovens, pans and ingredients all vary, so treat these as a starting point rather than an exact answer.