Coffeeholic is a free online resource for people who want to improve their coffee brewing at home. Its tools and guides help users choose a suitable grind, follow a brewing method, and adjust recipes to taste, without requiring an account or signup.

The site features grind-size charts for more than 58 grinders, with recommended settings across brewing methods shown in microns and clicks. It also offers animated, step-by-step brewing guides for methods including espresso, pour-over, French press, moka pot, Chemex, and AeroPress. Guides include practical details such as grind size, coffee-to-water ratio, timing, and preparation steps.

Coffeeholic’s toolkit includes a coffee-to-water ratio calculator, a weight-and-volume converter, a moka pot gasket finder, and a grinder burr finder. Visitors can also explore a drinks directory and an atlas introducing coffee-producing regions such as Brazil, Vietnam, Colombia, and Indonesia. The platform encourages users to dial in one variable at a time, helping them understand how grind and brewing adjustments affect the cup.