Coffee Grind Size Chart for Every Brew Method

Water dissolves flavour from the surface of each particle. Finer grinds have more surface area and more resistance to flow, so they extract faster and slow the water down. Coarser grinds extract more slowly and let water run through quickly.

That is why each method needs a different size: contact time sets the grind. Espresso is short and pressurised so it needs fine; French press steeps for minutes so it needs coarse. Too fine gives bitter, harsh coffee; too coarse gives weak, sour coffee. Uniformity matters as much as size, since fines and boulders extract at different rates.

Treat any chart as a starting point. Brew a recipe by weight, then adjust grind by small steps and change one variable at a time. Grind just before brewing, and keep a note of your setting for each method. Single dosing helps with consistency and reduces stale beans.

Burr condition and grinder alignment shift the same number between machines, so calibrate against taste rather than a number. Roast level matters: light roasts are denser and often need a finer grind than dark. See the dial-in guide for espresso and the burr grinder buying guide.

Many people now weigh both beans and water and keep a note of their grinder setting for each method, which makes results repeatable from day to day.

Grind size controls how fast water extracts flavor. Acids dissolve first (bright, fruity), then sugars (sweet, round), then bitter compounds last.

Finer grounds expose more surface area, so compounds dissolve in seconds, which is what espresso's short window needs. Coarser grounds suit long steeps. For the chemistry, see espresso extraction.

Grind size also interacts with roast. Light roasts are denser and extract more slowly, so they usually need a finer setting than a dark roast for the same method. Very fresh beans release gas that pushes water away from the grounds, so they can taste sour until they rest a few days or until you grind slightly finer. Stale beans extract quickly and taste flat, and grinding finer rarely rescues them. Our roast levels chart covers how roast changes flavour, and how to pick espresso beans explains freshness.

Fine (200-300 μm) and the least forgiving: at 9 bar, clumps and fines show up in both cup and shot time.

1. 1

   Dose. 18 g and aim for 36 g out (1:2).

2. 2

   Time. The shot from pump start; the target is 25-32 seconds.25-32 seconds

3. 3

   Adjust. Under 20 seconds, grind finer; over 35, coarser.20 seconds

4. 4

   Taste. Sour means finer, bitter means coarser.

Full routine: how to dial in espresso. Chemistry: espresso extraction. The espresso dial-in calculator tells you what to change after each shot.

Medium-fine, not espresso-fine. A moka pot makes roughly 1-2 bar, so an espresso grind clogs the filter plate and over-extracts. Coffee should start flowing after 3-4 minutes on medium heat; sputtering or rapid flow means too coarse.

Medium-fine, around 400 μm, is a good start. It is the most forgiving method. Use the AeroPress calculator to set coffee and water for the ratio you want.

• Espresso-style: 300-350 μm, 1:5-1:6, 1-minute steep.
• Filter-style: 450-550 μm, 1:12-1:15, 2-3 minute steep.
• Hard plunge? The grind is too fine.

Medium, adjusted by dripper. Drawdown under 90 seconds means grind finer; over 5 minutes, coarser.

• V60 and Kalita Wave (500-700 μm): the flat bed and larger holes tolerate small inconsistencies.
• Chemex (600-800 μm): thicker paper slows flow, so grind coarser.

Medium, matched to your basket. Flat-bottom baskets (like the Technivorm Moccamaster) tolerate slightly coarser; cone baskets need finer. Weak coffee means grind finer.

Coarse, like breadcrumbs. Mesh does not catch fines, so fine grounds give a muddy, bitter cup, a common reason coffee tastes bitter. Pour it all out right after pressing. For coffee and water amounts, use the French press ratio calculator.

Your grinder's coarsest setting for a smooth, low-acid cup. For ratios, use the cold brew ratio calculator.

1. 1

   Start. At the chart position for your method, not mid-dial.

2. 2

   Brew and time it.

3. 3

   Taste. Sour and thin means too coarse; bitter and harsh means too fine.

4. 4

   Change one increment,. Then purge 2-3 g.

5. 5

   Record. Setting, bean and roast date.

Light roasts are denser and need a finer grind than dark roasts.

A few practical checks help when a chart setting does not match what you see. Rub a pinch of grounds between your fingers: espresso should feel like fine table salt to flour, filter like sand, and French press like coarse sea salt. Then let the brew time confirm it. If a pour-over drains much faster than about three to four minutes for a single cup, go finer; if a French press is muddy and bitter, go coarser. Because every grinder's numbers are different, write down the setting that works for each method and each bag, rather than relying on another grinder's chart.

Some budget grinders max out too fine for French press and cold brew. See how to choose a burr grinder or best coffee grinders.

Electric, fine adjustment steps

Baratza Encore ESP

An entry-level espresso grinder with micro-stepped fine adjustment. Best for: espresso through French press from one grinder. Skip if you only brew filter coffee and want to spend less.

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Hand grinder for filter coffee

Comandante C40

A precision German hand grinder built for filter coffee, not espresso volume. Best for: pour-over and AeroPress. Skip if you grind for espresso or large batches.

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