Coffee Ratio Calculator: Coffee to Water Ratio

Coffee Ratio Calculator

If you are asking how much coffee for how much water, this calculator gives you a fast answer.

The Coffee Ratio Calculator helps you convert a brew ratio into actual coffee and water amounts. Enter how many grams of coffee you want to use and your preferred ratio, such as 16 for a 1:16 coffee to water ratio. The calculator then shows the water you need in grams and milliliters.

This is useful for:

• pour over coffee
• drip coffee
• French press
• AeroPress

Formula

The calculator uses:

• waterGrams = coffeeGrams × ratio
• waterMl = waterGrams

For brewing, water grams and milliliters are treated as roughly equivalent.

How to use

1. Enter the grams of coffee.
2. Enter the brew ratio, such as 15, 16, or 17.
3. Read the water amount in grams and milliliters.

What is a good coffee to water ratio?

A common starting point is 1:16.

Examples:

• 20 g coffee × 16 = 320 g water
• 30 g coffee × 16 = 480 g water
• 40 g coffee × 15 = 600 g water

This calculator handles the arithmetic for any brew size.

Coffee to water ratio examples

Common examples include:

• 1:15 for stronger coffee
• 1:16 for a balanced cup
• 1:17 for lighter brews

If you know your preferred ratio, this calculator turns it into exact coffee and water amounts quickly.

Coffee brewing tips

• Use 1:15 for stronger coffee.
• Use 1:16 as a balanced default.
• Use 1:17 for lighter, cleaner brews.
• Adjust grind size and brew time separately from ratio.

FAQ

What does 1:16 coffee ratio mean?

It means 1 part coffee to 16 parts water by weight.

Why show water in both grams and milliliters?

Many brewers weigh water, while others measure it by volume. Showing both makes the calculator easier to use.

Is this the same as coffee to water ratio?

Yes. That exact phrase is the main purpose of this calculator.

Can I use this for pour over and French press?

Yes. The ratio math is the same, even though grind size and brew time differ.