Coffee Grind Size Chart

Coffee grind size chart by brewing method

Find your brewing method below and begin with the suggested texture. Where the brewer or recipe specifies something different, follow that guidance first.

The comparisons describe appearance and feel, not exact dimensions. Salt and sugar themselves vary in size, so pay attention to the accompanying description.

Read down the chart as a broad progression towards larger particles, not a set of separate compartments. Moka, AeroPress and pour-over recommendations overlap because the recipe matters as well as the brewer.

For the wider subject, use the grind size and extraction hub. This chart is the quick reference; the linked guides explain what happens after the grounds meet water.

How to recognise the textures

Powder-fine and fine

Turkish coffee should look like powder. Spread a little on a plate and you should see a soft-looking layer rather than a collection of clearly separate granules.

Espresso grounds are fine too, but the useful comparison is a finely granular material rather than a flour substitute. A photograph can help distinguish espresso from cafetière grounds, but it cannot tell you whether a particular espresso setting will work in your basket.

Medium-fine and medium

At medium-fine, the grounds should look granular when spread out. Think of fine sand rather than dust: this is a useful starting reference for the V60 and AeroPress approaches shown above.

Medium grounds look more obviously grainy, with larger individual fragments. The distinction between medium and medium-fine is less dramatic than the difference between espresso and cafetière, which is why brewing feedback becomes more useful than appearance alone.

Medium-coarse and coarse

Medium-coarse grounds resemble rough sand or small salt crystals. Coarse grounds have more substantial, individually recognisable fragments, rather like coarse sea salt.

There will still be smaller particles among them. A grinder produces a particle-size distribution, meaning a mixture of sizes, rather than identical miniature pieces of coffee.

Make a useful visual comparison

Place loose samples on matching pale saucers, spread them to a similar depth and view them from the same distance. Arrange them from powder-fine to coarse, keeping a little space between samples.

Use this as a relative comparison within your own setup. Do not try to match a phone photograph grain for grain: magnification changes how large everything looks, and a heap hides the smaller particles. The complete grind size guide explains why the mixture of particle sizes matters beyond the overall appearance.

Why grinder settings are not universal

A setting is a position on a particular grinder’s adjustment system, not a standard unit of grind size. “Medium” on one dial and a numbered setting on another are not interchangeable measurements.

Even grinders of the same make and model can differ slightly in calibration, the relationship between their adjustment markings and actual grinding position. The coffee also matters: Baratza identifies roast level, freshness and bean characteristics among the reasons a published starting setting may need adjustment.

For a concrete example, Baratza’s Vario+ manual gives 2Q for espresso, 6M for Hario V60 and 10M for French press as general starting points. These are manufacturer recommendations for that model, not settings to copy onto a different grinder.

Use this order of priority:

1. Your grinder’s manual: find the recommendation for the exact model.
2. Your brewer or recipe: check whether it asks for a particular grind or brewing behaviour.
3. The texture chart: use it to catch an obviously unsuitable starting point.
4. The brewed result: refine the setting in small increments.

Record whether your grinder’s numbers increase towards finer or coarser. For click-adjusted hand grinders, also record the reference point specified by the manufacturer, rather than assuming every recipe counts clicks in the same way.

Follow the manual when moving the adjustment mechanism, especially towards a finer setting with beans inside. The practical handling belongs in how to grind coffee; there is no single adjustment procedure that should replace your machine’s instructions.

How to adjust grind size without chasing your tail

Change the grind while keeping the recipe steady. Changing the dose, temperature and pouring pattern at the same time makes the result much harder to interpret.

The following is a grind-comparison exercise, using Hario UK’s Expert V60 Brew Guide as the baseline, rather than a claim that every V60 should use the same recipe.

1. Set the baseline. Use 15 g of medium-fine coffee and 250 g of brewing water, approximately 250 ml measured before heating. This is a coffee-to-water ratio of about 1:16.7 by weight.
2. Keep temperature consistent. Hario specifies water at 92 to 96°C. Choose a point within that range and keep it unchanged between comparison brews.
3. Repeat the preparation. Rinse the paper, discard the rinse water and add the grounds. Wet all the coffee, wait about 30 seconds, then continue pouring gently in circles to the total water weight.
4. Record the result. Hario gives around 2 minutes 30 seconds for its process. Record your actual time and taste, treating that timing as a recipe reference rather than a pass-or-fail rule.
5. Make one small adjustment. If drainage is excessively slow, try slightly coarser. If the brew is weak and drains readily, test slightly finer.
6. Repeat before changing another variable. Keep the same coffee, dose, water quantity, filter and pouring approach, then compare the cups.

For espresso, use beverage weight, not cup volume, when making the comparison. Keep the dose and target yield fixed while adjusting grind, so a change in shot size does not confuse the result.

A useful notebook entry is simply: coffee, brewer, setting, dose, water or espresso yield, temperature, time and a few taste words. “Thin and sharply sour” tells you more than “not right”.

Troubleshooting: taste and flow together

Use the table to choose a first test, not to diagnose every disappointing coffee from one flavour.

Do not force an AeroPress plunger or tamp a moka basket to compensate for the wrong grind. Those are not substitutes for adjusting the coffee appropriately.

For the underlying brewing mechanisms, read the impact on brewing.

What a grind chart cannot tell you

Finer does not always mean better extraction

Grinding finer increases the available surface area, but water still has to move through the coffee. In a flowing brew, a change that helps extraction at the particle surface can also restrict the movement of water through the bed.

A peer-reviewed espresso study by Cameron and colleagues combined mathematical modelling with brewing experiments. It found lower extraction yields at both very coarse and very fine settings, rather than extraction increasing indefinitely as the grind became finer.

The practical lesson is modest: if repeatedly grinding finer makes an espresso less consistent, do not assume another finer adjustment must solve it. That study concerns espresso conditions, not a universal instruction to grind every brewing method coarsely.

One average size does not describe the whole sample

Two samples can share a broadly similar appearance while containing different proportions of small particles. Those small particles are often called fines.

The SCA’s home-grinder standard assesses grind quality using a particle-size distribution. Its test requirements should not be mistaken for a universal chart assigning one exact particle diameter to every brewing method.

That is why this guide avoids unsupported micron boundaries between “medium” and “medium-fine”. Texture gets you into a useful starting area; a controlled brew tells you where to go next.

Time is feedback, not the sole target

Keep time in your notes, but judge it alongside taste and flow. A recipe’s timing describes that recipe, not every dose, filter and pouring approach used with the same brewer.

Use extraction time and grind size when you need to understand that relationship in more detail. Keep this coffee grind size chart beside the grinder as a starting reference, then save the settings that work for your own coffee and equipment.