The Grind CalcReference chart
Coffee grind size chart
Grind size matters as much as your coffee-to-water ratio. This chart shows the right grind for every brew method, ordered from finest to coarsest, with a texture you can check by feel.
Grind size by brew method
| Brew method | Grind size | Feels like | Ratio |
|---|---|---|---|
| Turkish coffee | Extra fine | Flour or cocoa powder | 1:10 |
| Espresso | Fine | Finer than table salt | 1:2 |
| Moka pot | Fine–medium | Slightly coarser than espresso | 1:10 |
| AeroPress | Medium-fine | Finer than sand | 1:15 |
| Pour over (V60, Kalita) | Medium-fine to medium | Sand | 1:16 |
| Drip coffee maker | Medium | Sand or table salt | 1:16 |
| Chemex | Medium-coarse | Rough sand | 1:16 |
| French press | Coarse | Sea salt | 1:15 |
| Cold brew | Extra coarse | Cracked peppercorns | 1:8 concentrate |
Ratios link to each method’s calculator. For exact coffee and water amounts, see the coffee to water ratio chart.
Why grind size matters
Extraction is a race between water and coffee surface area. Grinding finer exposes more surface, so flavors dissolve quickly — which is why espresso, brewed in under 30 seconds, needs a fine grind. Grinding coarser slows extraction down, which is why French press (4 minutes) and cold brew (12+ hours) need coarse grounds. Matching grind to contact time is what keeps coffee balanced instead of bitter or sour.
How to dial in your grind
- Too bitter or harsh? You over-extracted — grind coarser or brew shorter.
- Too sour, thin, or weak? You under-extracted — grind finer or brew longer.
- Change one thing at a time and keep the same ratio while adjusting.
- Uneven, muddy cups usually mean inconsistent grounds — a burr grinder fixes this better than any recipe change.
Frequently asked questions
Why does grind size matter?+
Grind size controls how much coffee surface touches the water. Finer grinds extract faster and suit short brews like espresso; coarser grinds extract slower and suit long steeps like French press and cold brew. The wrong grind for the contact time produces bitter (over-extracted) or sour, weak (under-extracted) coffee.
How do I fix bitter or sour coffee?+
Bitter usually means over-extraction — grind coarser or shorten the brew time. Sour or weak usually means under-extraction — grind finer or extend the brew. Change one variable at a time and keep your ratio constant while dialing in.
Can I use one grind size for everything?+
A medium grind is a workable compromise for drip, pour over, and AeroPress, but it will under-perform for espresso (needs fine) and French press or cold brew (need coarse). If you only brew one or two ways, match the grind to those methods.
Is a burr grinder worth it over a blade grinder?+
Yes, if you care about consistency. Blade grinders chop unevenly, producing dust and boulders that extract at different rates in the same brew. An entry-level burr grinder produces uniform particles and is the single biggest equipment upgrade for most home brewers.
What grind size for pre-ground coffee?+
Standard pre-ground supermarket coffee is a medium grind aimed at drip machines. It works acceptably for pour over and AeroPress, poorly for French press and cold brew (muddy cups), and not at all for espresso or Turkish coffee.