Coffee Grind Size Guide: Charts, Brewing Methods, and Grinder Settings

What is the right coffee grind size for my brewing method?

The right coffee grind size depends on your brewing method: espresso needs a fine grind, filter coffee a medium grind, and French press a coarse grind. Grind size controls how quickly water extracts flavor from the coffee; a grind that is too fine for your method can over-extract (bitter, harsh), while too coarse can under-extract (sour, weak). Use a burr grinder and adjust settings based on taste, brew time, and the coffee grind size chart below.

Why grind size matters for flavor and extraction

Grind size is the single most important variable in brewing coffee. It determines the surface area exposed to water, which affects extraction—the process of dissolving coffee solids. Finer grinds expose more surface area, extracting faster; coarser grinds extract slower. The goal is to hit the sweet spot where coffee tastes balanced: sweet, acidic, and not overly bitter. Grind consistency, achieved with a burr grinder, ensures even extraction and prevents muddy or weak cups.

Coffee grind size chart: microns and reference points

Grind sizes are often measured in microns (µm). Here is a general coffee grind size chart with typical micron ranges and common brewing methods:

Grind Size	Micron Range	Brewing Method
Extra Fine	200–400 µm	Turkish coffee
Fine	400–600 µm	Espresso, Moka pot
Medium-Fine	600–800 µm	Pour-over (V60), Aeropress (short brew)
Medium	800–1000 µm	Drip coffee makers, siphon
Medium-Coarse	1000–1200 µm	Chemex, Clever Dripper
Coarse	1200–1500 µm	French press, cupping
Extra Coarse	1500+ µm	Cold brew

Note: Some charts use numbers (e.g., 1–10) or settings from specific grinders like Breville or Sage. Always refer to your grinder's manual for calibration.

Grind size by brewing method

Espresso

Espresso requires a fine grind, typically 400–600 µm. The high pressure (9 bars) and short contact time (25–30 seconds) demand fine particles to resist the water flow and build pressure. If the grind is too coarse, the shot will run fast and taste sour; too fine, and it will choke the machine and taste bitter. Start with a fine setting and adjust using the dialing-in process.

Filter coffee (pour-over and drip)

For coffee grinding for filter brewing, use a medium grind, around 800–1000 µm. This allows a total brew time of 3–4 minutes with a drawdown time that's not too fast or slow. If your coffee tastes weak, grind finer; if it's bitter, grind coarser. Popular pour-over cones like the V60 work well with medium-fine (600–800 µm) due to their thin filters and faster flow.

French press

French press uses a coarse grind (1200–1500 µm) to prevent fine particles from passing through the metal mesh filter and to slow extraction during the 4-minute steep. A common mistake is grinding too fine, which results in a muddy, over-extracted cup. Coarse grounds also make plunging easier.

Cold brew

Cold brew uses an extra coarse grind (1500+ µm) because of the long steeping time (12–24 hours) in cold water. The large particles extract slowly, reducing bitterness and producing a smooth concentrate. A grind that's too fine will over-extract and make filtering difficult.

How to use a coffee grind size chart with your grinder

Most home grinders use numbers or settings that don't directly correspond to microns. To match the chart to your grinder, follow these steps:

Identify your grinder type: Burr grinders offer more consistency than blade grinders. For recommended settings, check your manual or online guides.
Start with the suggested setting for your brew method: For example, on a Breville Smart Grinder Pro, start at setting 15 for espresso, 30 for pour-over, and 45 for French press. On Sage (UK version), the numbers are similar.
Brew a test cup: Use your usual recipe and taste.
Adjust in small increments: If the coffee is sour, grind finer; if bitter, grind coarser. Change one or two numbers at a time and note the change in taste.
Record your settings: Keep a log for each coffee, as different beans may require adjustments.

Below are common starting points for popular grinders:

Grinder Brand/Model	Espresso Setting	Filter Setting	French Press Setting
Breville Smart Grinder Pro	10–15	30–35	45–50
Baratza Encore	8–12	18–22	28–32
Rocket Espresso Fausto	Micro-adjust near zero	N/A (espresso-focused)	N/A
Sage Dose Control Pro	8–12	30–35	45–50
Starbucks Barista (rebranded)	Similar to Breville	Similar to Breville	Similar to Breville

Note: Settings are approximate and vary with calibration and burr wear. Always calibrate your grinder per the manufacturer's instructions.

Dialling in espresso: finding the right grind

Dialling in espresso is the process of adjusting grind size to achieve a balanced shot. Follow these steps:

Set a starting point: For most espresso grinders, set to the fine end of the range. On a Breville espresso grinder, try setting 10.
Pull a shot: Use a consistent dose (e.g., 18g) and tamp evenly.
Measure time and yield: Aim for a 1:2 ratio (36g out) in 25–30 seconds.
Adjust based on results:
- If the shot runs too fast (<25s) and tastes sour, grind finer.
- If it runs too slow (>30s) and tastes bitter, grind coarser.
Repeat until balanced: Make small changes and allow the grinder to purge a few grams after each adjustment.

Remember that ambient humidity, bean age, and roast level affect grind size. Darker roasts often require a coarser grind than lighter roasts.

Grinder calibration and maintenance for consistent grinds

To keep grind sizes consistent, calibrate your burr grinder regularly. Here’s how:

Clean the burrs: Remove oils and old grounds every few weeks.
Check burr alignment: Misaligned burrs cause uneven particles.
Adjust calibration: Some grinders have a calibration screw or digital setting. For example, Breville grinders allow adjustment of the inner burr to shift the entire range finer or coarser.
Replace burrs when worn: Dull burrs produce more fines, affecting extraction.

Refer to your grinder's manual for specific calibration steps. The Barista Express by Breville and Sage models include instructions for adjusting the upper burr.

Printable coffee grind size chart (PDF)

For a handy reference, many coffee websites offer a printable grind size chart in PDF format. You can create your own by printing the table above or searching for "coffee grind size chart pdf" online. Keep it near your grinder for quick adjustments.

Glossary of coffee grinding terms

Burr grinder: A grinder that crushes beans between two abrasive surfaces (burrs) for uniform particle size.
Drawdown time: The time it takes for water to pass through the coffee bed in pour-over brewing; an indicator of grind appropriateness.
Extraction: The process of dissolving coffee solubles into water; measured as a percentage of coffee mass.
Microns: A unit of length equal to one-millionth of a meter, used to measure grind particle size.
Grind consistency: The uniformity of particle sizes; crucial for even extraction.
Dialing in: The process of adjusting grind and dose to achieve optimal espresso flavor.

Choosing the right grinder for your coffee brewing

When selecting a grinder, consider your brewing method and desired grind range. For espresso, you need a grinder capable of fine adjustments, such as the Breville Smart Grinder Pro, Sage Dose Control Pro, or Rocket Espresso Fausto. For filter coffee, a Baratza Encore or similar mid-range burr grinder works well. Avoid blade grinders, as they produce inconsistent grinds that lead to uneven extraction. Think about how your coffee choices fit your gatherings: if you host brunches, a versatile grinder that switches easily from espresso to French press is ideal. For alcohol-free gatherings, pair your coffee with sparkling water, fruit, or desserts that complement the brew's flavor notes.