Coffee tool

Grind Size Guide

A reference for how coarse or fine to grind for each brewing method — described as a relative size and an everyday texture, not a dial number, because no two grinders are calibrated the same way.

Grind size scale — fine to coarse

Very Fine
Fine
Medium-Fine
Medium
Medium-Coarse
Coarse

Choose a brew method

Turkish

Relative grind: Very Fine
Feels like: Powdered sugar or flour
Why: The coffee is boiled with the grounds and served unfiltered, so it has to be ground almost to a powder to brew fully in a minute or two.
Worth knowing: This is the finest grind in home brewing — finer than espresso, and finer than most everyday grinders can reach.

Espresso

Relative grind: Fine
Feels like: Fine table salt or caster sugar
Why: Around nine bars of pressure pass through the puck in roughly 25–35 seconds, and a fine grind builds the resistance that contact time needs.

Moka pot

Relative grind: Medium-Fine
Feels like: A little coarser than espresso, like fine sand
Why: A moka pot uses gentle steam pressure and a short brew, so it wants a fine-ish grind — but ground for espresso it can choke or turn bitter.

AeroPress

Relative grind: Medium-Fine
Feels like: Table salt to fine sand, depending on the recipe
Why: A short, mostly-immersion brew through a paper filter suits a medium-fine grind as a default.
Worth knowing: AeroPress recipes vary more than any other method here — quicker recipes go finer, long steeps and the diluted "concentrate" method go coarser.

Pour over (cone)

Relative grind: Medium-Fine
Feels like: Fine sand, slightly coarser than table salt
Why: A cone dripper with a paper filter runs a two-to-three minute brew; too fine clogs and over-extracts, too coarse runs through fast and tastes thin.

Automatic drip

Relative grind: Medium
Feels like: Coarse sand or kosher salt
Why: The machine fixes a moderate contact time, and a medium grind matches most flat-bottom baskets without stalling or running through.

Chemex

Relative grind: Medium-Coarse
Feels like: Coarse sand approaching sea salt
Why: The thick bonded Chemex filter slows the flow, so a slightly coarser grind than a regular cone keeps the brew from stalling and turning bitter.

French press

Relative grind: Coarse
Feels like: Coarse sea salt or fresh breadcrumbs
Why: Full immersion for around four minutes plus a metal mesh filter means a coarse grind, which limits over-extraction and keeps fines out of the cup.

Cold brew

Relative grind: Coarse
Feels like: Coarse sea salt, or coarser
Why: A steep of 12–24 hours is very forgiving of a coarse grind, which keeps the long immersion from turning harsh and makes straining far easier.
Worth knowing: Many cold-brew recipes go coarser still than French press — closer to cracked pepper.

Why grind size matters

Grinding smaller particles exposes more surface area to water, so the coffee extracts faster. Every brewing method pairs a contact time and a filter with a grind size that extracts the right amount in that window. Go too fine for the method and the brew over-extracts and tastes bitter, or clogs the filter; go too coarse and it under-extracts and tastes thin and sour.

An even grind is what lets any of this work. A blade grinder produces dust and boulders at the same time, so part of the cup over-extracts while the rest under-extracts — our guide onburr vs blade grinders explains why consistency is the bigger upgrade.

Full reference table

Ordered from the finest grind to the coarsest. Use the texture column as your reference — grind a small amount, tip it onto a plate, and compare.

Method	Relative grind	Feels like	Why
Turkish	Very Fine	Powdered sugar or flour	The coffee is boiled with the grounds and served unfiltered, so it has to be ground almost to a powder to brew fully in a minute or two.
Espresso	Fine	Fine table salt or caster sugar	Around nine bars of pressure pass through the puck in roughly 25–35 seconds, and a fine grind builds the resistance that contact time needs.
Moka pot	Medium-Fine	A little coarser than espresso, like fine sand	A moka pot uses gentle steam pressure and a short brew, so it wants a fine-ish grind — but ground for espresso it can choke or turn bitter.
AeroPress	Medium-Fine	Table salt to fine sand, depending on the recipe	A short, mostly-immersion brew through a paper filter suits a medium-fine grind as a default.
Pour over (cone)	Medium-Fine	Fine sand, slightly coarser than table salt	A cone dripper with a paper filter runs a two-to-three minute brew; too fine clogs and over-extracts, too coarse runs through fast and tastes thin.
Automatic drip	Medium	Coarse sand or kosher salt	The machine fixes a moderate contact time, and a medium grind matches most flat-bottom baskets without stalling or running through.
Chemex	Medium-Coarse	Coarse sand approaching sea salt	The thick bonded Chemex filter slows the flow, so a slightly coarser grind than a regular cone keeps the brew from stalling and turning bitter.
French press	Coarse	Coarse sea salt or fresh breadcrumbs	Full immersion for around four minutes plus a metal mesh filter means a coarse grind, which limits over-extraction and keeps fines out of the cup.
Cold brew	Coarse	Coarse sea salt, or coarser	A steep of 12–24 hours is very forgiving of a coarse grind, which keeps the long immersion from turning harsh and makes straining far easier.

Dialling it in

Start at the size for your method, brew a cup, and taste. If it is bitter or the brew ran slow, go one step coarser. If it is sour, weak, or the brew ran fast, go one step finer. Adjust in small steps and change only the grind between brews so you can hear what each move does. Keeping yourcoffee-to-water ratio fixed while you do this makes the grind the only variable.