Coffee grind size by method: a practical table and how to fix it
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Quick answer: use a fine grind for espresso, medium-fine to medium for V60 and AeroPress, medium for a moka pot, and medium-coarse to coarse for a French press. Treat this as a starting point: the right setting is whichever one balances the cup with your coffee, dose, water and equipment.
This guide from Ciano Coffee Roasters, a speciality coffee roaster in Alcover (Tarragona), helps you decide what to adjust when your coffee comes out sour, weak, bitter or harsh.
Grind size table by method
| Method | Starting point | Looks like | What to watch |
|---|---|---|---|
| Espresso | Fine | Fine salt | Flow, time and balance |
| AeroPress | Medium-fine to medium | Between fine salt and sand | Recipe and contact time |
| V60 and conical filter | Medium-fine to medium | Fine sand | Total time and clarity |
| Moka pot | Medium-fine | Slightly coarser than espresso | Continuous flow, without scorching the output |
| French press | Medium-coarse to coarse | Coarse salt | Body and sediment |
Visual comparisons are no substitute for a reference point on your own grinder. Note down the setting number you use and change one step at a time.
How to fix the flavour
If it tastes sour, sharp or underdeveloped
You may be under-extracting. Try a slightly finer grind. If the method allows it, you can also extend the contact time or raise the temperature slightly, but don't change everything at once.
If it tastes bitter, dry or harsh
There may be too much extraction or too slow a flow. Try a slightly coarser grind. With filter methods, also check whether you're agitating too much.
If it tastes weak but bitter
It isn't always a grind issue on its own. You may have too little dose and too much extraction at the same time. Go back to a simple recipe and weigh your coffee and water before adjusting further.
A practical adjustment for each method
Espresso
Grind size controls much of the resistance to the water. If the coffee flows out too fast, go finer; if it barely flows, go coarser. Make small changes and keep the dose and distribution constant. Dig deeper with common mistakes when making espresso.
V60 and filter
If the water races through the bed and the cup ends up thin, go slightly finer. If it stalls and astringency appears, go coarser. To get started with the right kit, check out the Complete Hario V60 Kit and the guide What filter coffee is.
AeroPress
It handles many combinations. A finer grind usually needs less time; a coarser one, more contact time. Change one variable and keep the rest the same.
Moka pot
Don't use espresso's extreme fineness as your default. Aim for a continuous output and take the pot off the heat once the useful flow ends.
French press
Start with a medium-coarse grind. If the cup tastes flat, go one step finer; if it's harsh or has too much sediment, go coarser and pour carefully.
Frequently asked questions
Is there a universal grind size?
No. Two grinders can use different scales, and two coffees behave differently.
Can ground coffee be used in any coffee maker?
It's not ideal. Ask for the grind suited to your method, or use a grinder that lets you repeat settings.
Should I change the grind when I change coffee?
Yes, it usually needs a small readjustment for density, roast, age and recipe.
Explore the coffees available from Ciano Coffee and use this table as a starting point, not a rigid rule.
