How to use the coffee and water calculator
Choose the brewing method (V60, French Press, Espresso, Aeropress, Cold Brew, Moka, or Chemex).
Select whether you want to calculate based on water (ml) or coffee (g).
Enter the desired value and click on Calculate.
The calculator shows a recommended range and a suggested value, based on the ideal proportions for each method.
💡 For espresso, the water represents the final volume of the drink in the cup
Quick reference table for coffee proportions
Frequently Asked Questions About Coffee Ratio
What does a 1:15 ratio mean in coffee?
It means 1 gram of coffee for every 15 ml of water, resulting in a balanced coffee.
What is the best ratio for filtered coffee?
Typically between 1:15 and 1:17, depending on the desired intensity.
Does the ratio change with the grind?
Yes. Coarser grinds usually use less coffee; finer grinds, more coffee.
Do I need a scale to use the calculator?
It is recommended, but you can use approximate measurements if you don't have a scale.
What is the ideal ratio for espresso?
Generally between 1:2 and 1:2.5, like 18 g of coffee for 36–45 ml of drink.
Does cold brew use more coffee?
Yes. Since it is brewed cold, it uses more concentrated proportions.
At what temperature should the water be?
Between 90 °C and 96 °C for hot methods; cold for cold brew.
Can I adjust the ratio to my taste?
Yes. The table serves as a base, but personal taste is the most important.
Does this calculator work for whole and ground coffee?
Yes. The ratio is the same; what changes is the grind.
Does the calculator work for multiple cups?
Yes. Just enter the total amount of desired water or coffee.
Coffee and Water Calculator: Perfect Ratios for Each Method
The right ratio of coffee and water is what separates an "okay" coffee from a truly good and consistent coffee. With this calculator, you can prepare each method with more precision, avoiding watery or bitter coffee, and easily repeating the same result every day. Just choose the method (V60, French Press, Espresso, Aeropress, Cold Brew, Moka, or Chemex) and enter the amount of coffee or water — the tool will return the recommended range and a suggested value, to adjust the intensity to your taste.
This guide was created by coffee enthusiasts focused on brewing methods and ideal proportions for consistent extraction at home.
Quick unit converter for coffee
1 ml of water ≈ 1 g
1 tablespoon of coffee ≈ 5–7 g
1 medium cup ≈ 200–240 ml
For greater precision, always use a digital scale.
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