Coffee Brewing Calculator

Use the coffee brewing calculator below to calculate how much water to add per type of coffee brew. For espresso brewing the quantity of water is the amount of water in the final cup. The other types are how much water to use for that brew. Remember that the coffee will absorb 2-3 times its weight in water during the brew.

How to use the calculator

Select the type of brew you want, enter the grams of coffee you have, and the calculator will tell you how much water to add.

The type of brew is reflected as a ratio under total.


Recommended Coffee Brew Ratios

Type of coffee BrewBrewing ratio to start with
Espresso (old school/dark roast)1:2
Espresso (light roast)1:2.5
Mocha Pot/Italian pot1:4
AeroPress/AeroPress Go1:11
French Press (Plunger)1:16
Hario V60/Kalita (pour-over)1:16.5 – 16.6666
Chemex1:17
Auto Drip filter 1:18 – 1:18.5 (we use 1:18.182)
These are just starting point guidelines.

Try your own ratios, see what you think

Read more

Interested in coffee brew ratios? Then why not read more on the SCA site here…

Or read our explanation about brew ratios in the three lessons we put together about it: