Guide to Coffee Grind Sizes

Grind size is one of the most important and easily-adjustable characteristics of your brew process. The primary impact grind size has on your brew is the surface area of the coffee grounds which the water will be in contact with. A finer grind has a larger total surface area and will extract the coffee faster while a coarser grind will have a smaller surface area and will extract slower.

A secondary impact grind size has on your brew, particularly with percolation brewing methods (like a pour over or drip), is resistance as the water flows through the grounds. A finer grind will slow the flow rate of the water and increase the level of extraction while a coarser will have a faster flow rate and a less extraction.

Striking the right balance of surface area and resistance will make a huge difference in your resulting cup. When it comes to tracking your grind size in Tasting Grounds, it is difficult to account for the different settings on the many different grinders out there in a way that is useful to you and your friends in the community. That's why we've set up seven categories of grind size. Here are some general guidelines to follow for those categories.

grind size icon

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Very Fine

A very fine grind is pretty similar in texture to flour.

THINK: Turkish coffee

grind size very fine

Fine

A fine grind is going to be something like powdered sugar - not quite as coarse as sugar but not as fine as flour.

THINK: Espresso or Moka Pot

grind size fine

Medium-Fine

A medium-fine grind is...well it's somewhere between the medium and fine examples (if someone can think of a good one let us know 🙃).

THINK: Single serving pour over brewers

grind size medium-fine

Medium

A medium grind is slightly finer than table salt or close to dry sand.

THINK: Aeropress, Siphon, Flat-bottom (Kalita Wave) or Cone-shaped (Hario V60) brewers

grind size medium

Medium-Coarse

A medium-coarse grind is somewhat gritty like a rough sand.

THINK: Chemex or Clever Dripper

grind size medium-coarse

Coarse

A coarse grind is going to be something like sea salt or coarse sand.

THINK: French Press

grind size coarse

Very Coarse

A very coarse grind is going to be something like cracked peppercorns.

THINK: Cold Brew

grind size very coarse
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