If your coffee swings from sour to bitter, look at the grinder. Start fine for espresso. Use a medium setting for most pour-over and drip coffee. French press and cold brew need a coarser grind. This coffee grind size chart gets you close, but taste should guide the final setting. If the grounds look very uneven, compare our best coffee grinders.
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Practical coffee grind size chart
| Brewing method | Starting grind | Visual reference |
|---|---|---|
| Espresso | Fine | Finer than table salt |
| Moka pot | Fine to medium-fine | Fine sand |
| AeroPress | Fine to medium | Recipe-dependent |
| Pour-over | Medium-fine to medium | Table salt |
| Automatic drip | Medium | Regular sand |
| French press | Medium-coarse to coarse | Coarse salt |
| Cold brew | Coarse | Coarse salt |
Treat the chart as a visual neighbourhood, not a GPS coordinate. “12” on one grinder tells you nothing about setting 12 on another, and even two units of the same model may be calibrated slightly differently. Use the maker's range to get close, brew once and move in small steps. Espresso needs finer control, so use our dedicated espresso grind size guide when dialling in a portafilter.
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Adjust using taste and time
A finer grind usually brews faster. If the coffee runs through too quickly and tastes sour, move a little finer. If it takes too long and tastes bitter, go coarser. Make a small change each time so you can tell what helped.
Keep the recipe the same while you change the grind. Use the same amount of coffee and water. Keep the water temperature steady too. Brew time is a useful clue, but taste is what matters. Espresso reacts to very small changes. AeroPress can work with a wider range.
03
Why an even grind matters
A burr grinder crushes beans through a controlled gap. A blade grinder repeatedly chops them, creating a mix of dust and large fragments that extract at different speeds. That unevenness is one reason a cup can seem sour and bitter at the same time.
Not every burr grinder suits every method. Filter-focused models may not adjust finely enough for an unpressurised espresso basket; espresso grinders can be slow to move between methods or retain more coffee. Beans change too: roast level, age and humidity can all shift the useful setting.
04
Make each brew easy to repeat
Weigh the coffee and water to make each brew easier to repeat. Clean the burrs and chute as the maker explains. After a large setting change, grind a small amount to clear old grounds. Keep a short note of the bean, setting and taste. That is easier than trying to remember a good brew from last week.
For the rest of the setup, compare our best electric gooseneck kettles, best electric kettles and travel adapter guide. The wider Coffee category has more brewing guides.
Before blaming grind for everything, check water temperature, ratio and cleanliness. Make one deliberate change, brew again and let flavour choose the next move. That is how the chart becomes your setting rather than somebody else's number.
Sources and further reading
We use primary and specialist sources to check the principles in this article. Product recommendations are researched separately.
