Calculators

Get the numbers first, then decide what to change.

Calculate pour-over ratios, cold brew doses, and water and ice amounts, or estimate caffeine. Each calculator includes answers to common questions and links to related guides to help you understand the results.

A balance scale holding coffee grounds and hot water, with the numbers 15, 1:16, and 240 as weight marks

Foundation

Calculators You are here
Brew Ratio Calculator Enter the coffee dose or water amount to calculate the other quantity at your chosen ratio.

Core

Cup Caffeine Calculator Estimate caffeine in milligrams from your brewing method and serving size.
Cold Brew Calculator Calculate coffee and steeping water amounts, then plan dilution after filtering.
Iced Pour-Over Calculator Calculate hot water to pour and ice to put in the server.

Special and Further Reading

Americano Water Calculator Get the hot water to add to espresso.
Cost Per Cup Calculator Average bean cost from bag price, weight, and dose.
4:6 Method Calculator Get the water for each pour in Kasuya’s 4:6 method.