Fundamentals · 7 min read

Coffee Grind Size Chart: The Complete Guide

Grind size is the single most impactful variable you control. Get it right and everything else falls into place. Get it wrong and no technique will save you.

Why Grind Size Matters So Much

Grind size controls surface area. Finer grounds expose more surface to water, so extraction happens faster. Coarser grounds expose less, so extraction happens slower. Every brew method is designed around a specific contact time — and the grind size needs to match.

Use the wrong grind and you'll either under-extract (sour, thin) or over-extract (bitter, harsh). This is the #1 reason people's home coffee doesn't taste like the cafe — and it's the easiest variable to fix.

The Complete Grind Size Chart

Grind Level Texture Methods Contact Time
Extra Fine
Powder / flour Turkish / Ibrik 2–3 min
Fine
Table salt Espresso, Moka Pot 25–45 sec
Medium-Fine
Fine sand AeroPress, V60, Kalita Wave 2–4 min
Medium
Regular sand Drip machine, Siphon 4–6 min
Medium-Coarse
Coarse sand Chemex, Clever Dripper 4–5 min
Coarse
Sea salt / breadcrumbs French Press, Percolator 4–5 min
Extra Coarse
Peppercorns / rock salt Cold Brew 12–18 hr

The Relationship: Grind ↔ Contact Time

Here's the principle that makes grind size intuitive:

Short contact time → Fine grind
Long contact time → Coarse grind
Espresso forces water through grounds in 25 seconds, so the grind must be very fine to extract enough flavour in that tiny window. Cold brew steeps for 16 hours, so the grind must be very coarse to avoid over-extracting during all that time.

How to Adjust: The Taste Feedback Loop

You don't need to memorize grind settings. Just taste and adjust:

Burr vs. Blade Grinder: Does It Matter?

Yes — enormously. This is the most important equipment upgrade you can make, more impactful than a better brewer or fancier beans.

Blade Grinder

Not recommended
  • Chops beans randomly — mix of dust and boulders
  • Inconsistent particle size = uneven extraction
  • Some grounds over-extract while others under-extract simultaneously
  • No way to adjust grind size precisely

Burr Grinder

Worth the investment
  • Crushes beans between two abrasive surfaces — uniform particles
  • Consistent size = even extraction = better flavour
  • Adjustable from Turkish to cold brew
  • Even a $40 hand burr grinder outperforms a $100 blade grinder

Quick Reference by Method

Espresso
Fine
Table salt
V60
Medium-Fine
Fine sand
AeroPress
Medium-Fine
Fine to regular sand
Drip Machine
Medium
Regular sand
Chemex
Medium-Coarse
Coarse sand
French Press
Coarse
Sea salt
Cold Brew
Extra Coarse
Peppercorns
💡
Track your grind settings. Every grinder is different — "medium" on your grinder might be "medium-fine" on someone else's. The numbers on your grinder only matter relative to themselves. Log the setting number alongside your brew parameters, and you'll dial in much faster.