Coffee Grind Size Chart

Grind size is the setting you will touch most often, and the one that matters most. The same beans can taste sour, sweet or bitter depending on how fine you grind them. This chart shows where each brew method usually sits, from powder-fine Turkish coffee to extra coarse cold brew, with approximate particle sizes, everyday comparisons and the signs that tell you to go finer or coarser.

Coffee grind size chart for every brew method

Particle sizes below are approximate and vary by grinder. Every grinder produces a spread of sizes rather than a single number, so these figures describe roughly where the bulk of the grounds sits. Treat them as a map, not a target.

Texture reference

If you do not have a sieve or a microscope, compare your grounds with things in your kitchen. Pinch some between your fingers: espresso should feel fine but still slightly gritty, French press grounds should feel distinctly chunky.

• Powdered sugarTurkish
• Table saltEspresso to V60
• Kosher saltChemex
• Sea salt, breadcrumbsFrench press
• Cracked peppercornsCold brew

Why does grind size matter?

Grinding does two jobs at once: it exposes surface area for the water to work on, and it decides how quickly water can move through the coffee.

Surface area and extraction

Smaller particles have more surface area per gram and a shorter path from their center to the water. For the same dose, halving the particle size roughly doubles the surface area. More surface area means faster extraction, which is why a finer grind pulls out more flavor in the same time, and why going too fine tips the cup into bitterness.

Flow rate and contact time

In percolation methods (espresso, pour over and drip), water has to pass through a bed of coffee. Finer grounds pack tighter and slow the water down, which adds contact time and extraction on top of the extra surface area. That is why grind size is the main control for shot time and drawdown time.

In immersion methods (French press, cold brew and most AeroPress recipes), you set the contact time yourself. Grind size then controls how quickly extraction happens and how much sediment ends up in the cup.

Aiming for the right extraction

For filter coffee, the SCA brewing control chart puts the ideal at roughly 18 to 22 percent of the coffee's weight dissolved into the cup. You do not need to measure it. Sour, thin and salty means you are below that window; bitter, dry and hollow means you are above it.

How to tell if your grind is too fine or too coarse

Each brewer gives you a different signal. Use the table for a quick check, then read the notes for your method. Times are for the doses shown and get longer as you brew more coffee.

Espresso grind size

Espresso needs the finest grind of the common methods apart from Turkish coffee, because pump pressure pushes the water through the puck in well under a minute. Start with 18 g in and 36 g out, aim for roughly 25 to 32 seconds, then adjust by taste. Espresso is also where small changes matter most: one step on a grinder can move the shot by several seconds. Our step-by-step guide to dialing in espresso covers the full process, and the Espresso Compass tells you which way to move next.

Pour over grind size (V60, Kalita, Chemex)

For a single-cup V60 (about 15 g coffee to 250 g water), a medium-fine grind should give a total brew time of roughly 2:30 to 3:30. Flat-bottom drippers like the Kalita Wave restrict the flow a little, so most people grind slightly coarser and expect 3:00 to 4:00. The Chemex's thick filters drain slowly, so it needs a medium-coarse grind; a 30 g to 500 g brew typically takes 3:30 to 4:30.

Bigger brews take longer at the same setting, so grind a touch coarser when you scale up. If the drawdown slows dramatically near the end, fines may be clogging the paper: grind slightly coarser and pour more gently. Our pour over coffee guide has full recipes from Hoffmann, Rao and Kasuya.

French press grind size

French press uses a coarse grind, roughly coarse sea salt. With a classic four-minute steep, the plunger should press down with gentle, steady resistance. If you have to force it, or coffee squirts up around the mesh, the grind is too fine and the cup will be silty and bitter. If the plunger drops with no resistance and the coffee tastes thin, go finer. James Hoffmann's method (steep four minutes, break and skim the crust, wait another five to eight minutes, then press only to the surface) is more tolerant of a finer grind, because the grounds settle on their own.

Moka pot grind size

A moka pot needs a fine to medium-fine grind: a little coarser than espresso, around the texture of table salt. Too fine and the pot struggles, sputters and tastes harsh; in extreme cases the safety valve can release. Too coarse and the coffee gushes out pale and sour. Fill the basket level without tamping, and start with hot water in the base so the coffee spends less time on the heat.

AeroPress grind size

AeroPress recipes range from fine, short brews to coarse, long steeps, which is why it covers such a wide band in the chart. For a typical recipe of one to two minutes, medium-fine is a good start. When you press, you should feel steady resistance for around 20 to 30 seconds. Having to lean your full weight on it means the grind is too fine.

Cold brew grind size

Cold brew uses the coarsest grind because the coffee steeps for 12 to 24 hours. Extra coarse grounds keep the brew from turning muddy and bitter and make it much easier to filter. If your cold brew is weak, steep longer or use more coffee before grinding much finer. See our cold brew guide for ratios and steep times.

Burr vs blade grinders: why consistency matters

The chart assumes a burr grinder. Burr grinders crush beans between two burrs set a fixed distance apart, so the particles come out within a fairly narrow range. Blade grinders chop beans with a spinning blade, and the result depends on how long you run it: a mix of dust and large chunks.

That mix is a problem because each particle size extracts at its own speed. The dust over-extracts and turns bitter while the chunks under-extract and stay sour, so the cup can taste both at once, and no single setting fixes it. Both conical and flat burrs can be excellent; burr quality, alignment and build matter more than the shape alone.

What are fines?

Fines are the very small particles that every grinder produces to some degree. In espresso they add body and help build resistance in the puck. In pour over they extract quickly and can migrate to the bottom of the bed and clog the paper, which slows the drawdown. Better grinders produce fewer fines and fewer oversized boulders, which is a large part of why a good grinder improves the cup more than almost any other upgrade.

If a burr grinder is not in the budget yet, get the most from a blade grinder by grinding in short pulses and shaking between them, and favor forgiving methods like French press or a steeped AeroPress.

Why grinder numbers don't translate between grinders

"Grind at 15" means nothing outside one specific grinder. A few reasons:

• Step sizes differ. Some hand grinders move the burrs around 30 microns per click, others less than 10. An electric grinder's numbers may follow a completely different scale.
• Zero points differ. Two units of the same model can be calibrated slightly differently, so setting 15 on one may not match setting 15 on another.
• Burr geometry differs. Two grinders at the same burr gap can produce quite different spreads of particle sizes.
• Settings drift. Cleaning, reassembly and burr wear can all shift what a given number produces.

Use published grinder settings as a rough starting point only. A better habit: find your grinder's zero (the point where the burrs just touch; close them gently and never grind there), count your settings from that point, and write down what works for each coffee. Then let brew time and taste make the final call.

Adjusting grind size for roast level and freshness

Light vs dark roasts

Light roasts are denser and less soluble, so they usually need a finer grind (and hotter water) to extract fully. Dark roasts are brittle and more soluble; they shatter into more fines and extract quickly, so grind a little coarser and use slightly cooler water. If you switch from a dark roast to a light one at the same setting, expect a sour, thin cup until you grind finer.

Fresh vs older beans

Very fresh coffee is full of CO2, which bubbles out as you brew and can push water away from the grounds. A good bloom handles this in pour over; for espresso, resting the beans a few more days is the better fix. As beans age and lose gas, espresso shots tend to run faster, so most people grind slightly finer as a bag gets older. Coffee that is well past its best will not taste good at any setting.

A simple rule for new beans

Start each new bag at your usual setting for that brewer, brew, taste, then move in small steps. Change only the grind until the time is in range, and only then adjust the ratio or temperature. Our coffee to water ratio guide covers the other half of the recipe.