Coffee Grind Size Chart: The Right Grind for Every Brewer

A coffee grind size chart answers the most common brewing question after "how much coffee?": how fine should the coffee be ground? The answer depends on how long water stays in contact with the grounds. Short brews need a fine grind so water can extract enough flavor in seconds; long brews need a coarse grind so they do not turn bitter. This guide puts the published starting points for each common brewer in one chart, explains why grind size matters so much, and shows how to adjust it step by step. The descriptions come from the National Coffee Association (NCA) brewing guides and Wikipedia's coffee preparation article rather than from any single coffee company.

Why grind size matters

Grinding exposes the inside of the bean to water. The finer the grind, the more surface area there is and the faster flavor dissolves. Wikipedia's summary of coffee preparation puts the rule simply: methods with a longer contact time need a coarser grind, and faster methods need a finer one. Grounds that are too fine for the method expose too much surface and give a bitter, harsh cup; grounds that are too coarse give weak coffee unless you use more of them. A very fine grind extracts most efficiently, but it also slows filtering, which is why a French press screen or a paper filter can clog when the coffee is ground for espresso.

Uniformity matters as much as the average size. A grind with a mix of dust and large pieces extracts unevenly: the dust over-extracts and turns bitter while the chunks under-extract and taste thin, so the cup can be bitter and weak at the same time. That is the main argument for a burr grinder, covered below.

Coffee grind size chart

The grind descriptions, contact times and ratios below are the starting points published by the National Coffee Association for each method, except the Turkish coffee row, which follows Wikipedia's coffee preparation article. Ratios are grams of coffee to grams of water.

Two notes on reading the chart. First, "fine" and "coarse" are not standardized between grinders: setting 10 on one machine can be quite different from setting 10 on another, so the salt comparisons are a better guide than numbers. Second, the NCA gives hot-brew water at about 93 ± 3 °C (roughly 195 to 205 °F) for pour-over and French press, and room-temperature or cooler water for cold brew. Cold water extracts far more slowly, which is why cold brew pairs the coarsest grind with the longest time and the most coffee.

Grind size by method, in more detail

Espresso: fine

Espresso forces hot water through a tightly packed bed of coffee in 20 to 30 seconds, according to the NCA, so it needs the finest grind of the common methods. Small changes matter: a grind slightly too fine can choke the machine and taste bitter, while slightly too coarse runs fast and tastes thin. Wikipedia notes that blade grinders produce fine dust that can clog espresso machines and are not recommended for pump espresso.

Pour-over and drip: medium

The NCA starts both at a medium grind. Pour-over gets a shorter 2 to 4 minute contact time, so many brewers go a touch finer than for a drip machine; our Blue Mountain brewing guide uses medium-fine for a 250 ml pour-over. Cone drippers slow the flow compared with flat-bottom brewers, which the NCA says can give a richer cup, so a cone may need a slightly coarser grind than a flat-bottom brewer to finish in the same time.

French press: coarse

A press steeps the grounds in all the water for about four minutes and then separates them with a metal mesh screen. A coarse grind keeps the brew from over-extracting during that steep and stops fine particles slipping through the screen into the cup. For a full comparison with paper-filtered coffee, see French press vs pour-over.

Cold brew: coarse

Cold brew uses a coarse grind and a long steep at room temperature or in the fridge. The NCA's 1:4 to 1:5 ratio makes a concentrate that is usually diluted before drinking, so the strength in the glass depends on how much water or milk you add.

Turkish coffee: extra fine

Turkish and Arabic coffee use a powdery grind that stays in the cup. Wikipedia notes that most home burr grinders cannot reach this fineness and that traditional hand grinders or a mortar and pestle are used instead.

Burr grinder or blade grinder?

Wikipedia's coffee preparation article describes the difference clearly. A burr grinder crushes beans between two abrasive surfaces set a fixed distance apart, so particles come out fairly uniform and little heat is produced; most offer many settings and suit espresso, drip and French press. A blade grinder chops beans with blades spinning at roughly 20,000 to 30,000 rpm. It is cheaper, but the particle size is uneven, changes the longer it runs, and varies between batches, and the fine dust it makes can clog fine screens. If you use a blade grinder, grind in short pulses, shake the grinder between pulses, and favor drip or pour-over, which tolerate uneven grinds better than espresso or a press.

How to dial in your grind

1. Start from the chart. Set the grind and ratio for your brewer and weigh the coffee if you can; a spoonful of fine coffee weighs more than a spoonful of coarse.
2. Keep everything else fixed. Use the same coffee, dose, water and temperature, so the grind is the only thing you change.
3. Taste and judge. The NCA's rule of thumb is that bitter coffee calls for a coarser grind and flat or watery coffee calls for a finer one.
4. Change one step at a time. Move the grinder one or two settings, brew again, and compare. Note the setting that works for each coffee.
5. Watch the clock. If a pour-over drains much faster or slower than 2 to 4 minutes, or an espresso shot runs far outside 20 to 30 seconds, adjust the grind before anything else.
6. Grind just before brewing. Wikipedia notes that ground coffee goes stale faster than whole beans because far more surface is exposed to air (see how to store coffee beans).

Grind size, roast and freshness

Roast level changes how a coffee grinds and extracts. Darker roasts are more brittle and give up their soluble flavors more easily, so many brewers grind them a little coarser; lighter roasts are denser and often need a slightly finer grind to avoid a sour, thin cup (see coffee roast levels). Very fresh coffee releases a lot of gas, which is why pour-over recipes include a short "bloom" with a little water before the main pour. Stale, pre-ground coffee is the hardest to dial in: by the time it reaches the brewer it has lost much of the aroma that a correct grind is meant to bring out.

Grinding a mild coffee such as Jamaica Blue Mountain

Mild, balanced coffees are the least forgiving of a grind that is too fine. Jamaica Blue Mountain is valued for gentle acidity and very little bitterness (see what Blue Mountain coffee tastes like), and over-extraction adds exactly the bitterness it is bought to avoid. Start at the coarse end of the range for your brewer, use a burr grinder if you have one, and grind only what you will brew. Pre-ground and pod coffee are ground to suit a typical brewer, so with those the ratio and water temperature are the settings you can still control.

Disclosure: this site is published by Mamre Blue Coffee, a Jamaica Blue Mountain estate (see about us), so we rely on official and independent sources for the facts on this page.