Coffee to water ratio calculator
Pick a method or type your own ratio to get the coffee dose for the water you want to brew.
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How to use it
- Enter water, brew method and custom ratio (1:x), optional.
- The result appears straight away and updates as you edit.
- Copy the result, or copy a link that keeps the same values to share it.
How it is calculated
Coffee (g) = water (mL) ÷ ratio number; 1:16 means 1 g of coffee per 16 mL of water. The SCA Golden Cup is 55 g per litre.
Example
Inputs: Water = 1,000 mL, Brew method = SCA Golden Cup (55 g per litre). Result: Coffee needed: 55 g; Ratio used: 1:18.18; Coffee per litre: 55 g/L.
Limits and caveats
- Ratios other than the SCA standard are common starting points to adjust to taste.
- It treats 1 mL of water as about 1 g, and some water stays in the wet grounds.
Questions about this tool
How much coffee for a 250 mL cup?
About 15.6 g at 1:16, or about 13.8 g by the SCA standard.
What does 1:15 mean?
1 g of coffee for every 15 mL of water; the smaller the second number, the stronger the coffee.
Why is cold brew 1:8?
It is brewed as a concentrate and diluted with water or milk when served.