AeroPress Grind Size Guide: Settings for Every Grinder

Grind size is the single biggest lever in AeroPress brewing — bigger than ratio, water temperature, or steep time. This guide shows you the right grind for every AeroPress style, the click settings for popular grinders, and how to taste-test your way to a calibrated cup.

Why grind size dominates AeroPress brewing

Coffee extraction is a race between water dissolving flavor compounds and pressure pushing water through the bed. Grind size controls both surfaces of that race: finer grinds expose more surface area (more extraction) but also resist water flow (longer contact). Get the grind wrong and no amount of recipe-tweaking will fix the cup.

The AeroPress's short brew window (60–90 seconds) makes grind extra-sensitive. A pour over forgives a small grind miss because the bed is wide and shallow; the AeroPress's narrow, deep bed amplifies every degree of fineness. Three clicks too fine and the press chokes; three clicks too coarse and the cup tastes thin and sour.

The three reference AeroPress grinds

Style	Visual cue	Press feel	Brew time
Fine (espresso-style)	Table salt with a fine dust	Firm, slightly resistant	15–20 sec press
Medium-fine (standard)	Table salt	Smooth, even pressure	30 sec press
Medium (long immersion)	Coarse sand	Very easy, fast	1+ min steep, then quick press

"Medium-fine" is the AeroPress default and the one to start with. Once you can brew that cleanly, move toward fine for espresso-style shots or toward medium for long-immersion competition recipes.

Settings on common grinders

Burr grinders all measure clicks differently, so absolute numbers vary. Use these as a starting point, then taste-calibrate.

Grinder	Fine (espresso)	Medium-fine (standard)	Medium (immersion)
Baratza Encore	5–8	10–14	18–22
Baratza Virtuoso+	4–7	10–13	16–20
Comandante C40	8–12 clicks	15–20 clicks	22–28 clicks
1Zpresso JX	30–40 clicks	50–60 clicks	70–80 clicks
1Zpresso Q2	2.0–2.2 turns	2.6–2.9 turns	3.3–3.6 turns
Fellow Ode (Gen 2)	2–4	4–6	7–9
Wilfa Svart	9 o'clock	11 o'clock	1 o'clock

Blade grinders chop unevenly and produce a mix of dust and boulders. Even the best recipe can't compensate. If you're committed to AeroPress, a burr grinder is the upgrade with the largest taste impact.

How to calibrate a new coffee in three brews

Every coffee responds to grind a little differently. Light roasts generally need finer; dark roasts open up coarser. Here's the fastest way to dial in any new bag.

Step-by-step calibration

Brew 1 — start at medium-fine. Use the standard recipe (17 g coffee, 250 g water at 200 °F, 1:30 total). Note the press time. Taste with your eyes closed and write down one word for the dominant flavor.
Brew 2 — adjust one direction. If brew 1 tasted bitter or harsh, grind 2 clicks coarser. If it tasted sour, thin, or weak, grind 2 clicks finer. Brew again with the same recipe. Taste.
Brew 3 — fine-tune. If brew 2 improved but you can still do better, move another 1 click in the same direction. If brew 2 overshot, split the difference between brew 1 and brew 2. Most coffees lock in within three brews.

Keep notes by bag — a small index card taped to the bag with grinder, click count, and one-word verdict saves you the same dial-in next time you open the same coffee.

Grind-driven troubleshooting

Bitter, dry, or astringent

Grind coarser. Bitterness is over-extraction; coarser grind reduces contact area.

Sour, thin, or weak

Grind finer. Sour-thin is under-extraction; finer grind increases contact area.

Press takes more than 45 seconds

Grind coarser. The bed is choking water flow.

Press takes less than 15 seconds

Grind finer. Water is shooting through the bed without extracting.

Water squirts past the filter when you push down

Grind finer, or check that the filter is rinsed and seated flat. Often the filter is the culprit, not the grind.

Gritty texture in the cup

Grind coarser, or double up the paper filter. Fines (very small particles) cause sediment.

Light vs dark roast — adjust grind, not just ratio

Roast level changes how easily coffee gives up its solubles. Light roasts are denser and harder to extract; dark roasts are porous and extract quickly.

Light roast (e.g. Banko Gotiti): grind 1–2 clicks finer than your medium-fine baseline. Use water at 205 °F. Aim for slightly longer brew time.
Medium roast (e.g. Argelia Cauca): your baseline. The standard recipe was written for this roast level.
Dark roast: grind 1–2 clicks coarser than baseline. Drop water to 195 °F. Shorter brew, lower temperature, prevents the cup from going bitter.

AeroPress grind size FAQ

What grind size is best for AeroPress?

Medium-fine — about the texture of table salt — for the standard inverted recipe. Finer for espresso-style shots, coarser for long-immersion brews.

What number should I set my Baratza Encore to for AeroPress?

10–14 for the standard recipe, 5–8 for espresso-style. Start at 12 with a new coffee and adjust by 2 clicks per brew until the cup tastes balanced.

Can I use a blade grinder for AeroPress?

You can, but the cup quality drops sharply. Blade grinders produce uneven particle sizes, mixing dust (over-extracts to bitterness) with boulders (under-extracts to sourness) in the same brew. A budget burr grinder will outperform any blade grinder.

Why does my AeroPress press so slowly?

Your grind is too fine. Coarsen by 2–3 clicks. A standard inverted press should take about 30 seconds of steady, smooth pressure.

Should I grind finer for light roasts?

Yes. Light roasts are denser and harder to extract — grind 1–2 clicks finer than your medium-roast baseline, and use water at 205 °F. Dark roasts go the opposite direction: 1–2 clicks coarser, 195 °F water.