What Grind Size for Pour-Over? A Practical Guide to Dialing It In

The Short Version

Pour-over coffee uses a medium-fine to medium grind — somewhere between table salt and coarse sand. But that description only gets you in the neighborhood. The right grind size depends on your specific dripper, filter type, dose, and even the coffee itself. This guide will help you nail it down and, more importantly, teach you how to adjust when something tastes off.

What “Medium-Fine” Actually Looks Like

Grind size terminology is frustratingly vague. One person’s “medium” is another person’s “medium-fine.” So let’s anchor to something concrete.

For a standard V60 brew with 15g of coffee and 250g of water, you want grounds that look like coarse sand or raw sugar. If you pinch some between your fingers, individual particles should be distinct — not powdery, not chunky. On a Timemore C2, that’s roughly 15-18 clicks from fully closed. On a Comandante C40, it’s about 24-28 clicks. On a Baratza Encore, start around setting 12-15.

These numbers are starting points, not gospel. Every grinder, even the same model, has slight calibration differences. The numbers get you close. Your taste buds do the final tuning.

Why Grind Size Matters So Much

Grind size controls extraction rate — how quickly water pulls flavor compounds out of the coffee. Finer grounds expose more surface area to water, which speeds up extraction. Coarser grounds do the opposite.

Pour-over sits in a specific window because of how the method works. Water passes through the grounds under gravity, spending a limited amount of contact time with the coffee. Too coarse, and the water runs through before it can extract enough flavor. Too fine, and it either stalls in the filter bed (creating a bitter, over-extracted mess) or extracts too aggressively even if it does drain.

The target extraction for most specialty coffee is 18-22%. Below that range, you get sour, thin, underdeveloped flavors. Above it, bitterness, astringency, and a drying sensation take over. Grind size is the primary lever you pull to land in that window.

Adjusting for Different Drippers

Not all pour-over drippers behave the same way. The filter shape, drain hole design, and flow restriction all influence how fast water moves through the bed — which means each one has a slightly different grind sweet spot.

Hario V60

The V60 has a single large drain hole and spiral ribs that allow air to escape freely. This means fast drainage and less natural flow restriction. To compensate, you grind slightly finer than you would for most other drippers. A medium-fine grind is the target, and total brew time should land between 2:30 and 3:30 for a single cup. If you’re finishing under 2:15, go finer. Over 3:45, go coarser.

Kalita Wave

The Kalita Wave 185 uses a flat-bottom design with three small drain holes. Those restricted holes slow the drawdown naturally, so you can afford to grind slightly coarser than V60 — closer to true medium. The flat bed also promotes more even extraction without requiring perfect pour technique. Target 3:00-4:00 total brew time.

Chemex

The Chemex uses thick, bonded filters that slow flow considerably and absorb oils. Grind noticeably coarser than V60 — medium to medium-coarse. Those thick filters do a lot of the work, and grinding too fine with a Chemex will stall the brew entirely. You’re also typically brewing larger doses (30-40g), which means longer contact time regardless. Target 4:00-5:00 for a 6-cup batch.

Clever Dripper and Other Immersion Hybrids

The Clever Dripper is technically an immersion brewer that drains like a pour-over. Because the coffee steeps in full contact with water before draining, you want a medium to medium-coarse grind. The drawdown phase is short, and most of the extraction happens during the steep. Treat it more like a French press grind than a V60 grind.

Reading Your Cup: The Feedback Loop

Dialing in grind size is an iterative process. Brew, taste, adjust, repeat. Here’s how to read what your coffee is telling you.

Signs of under-extraction (grind too coarse): The coffee tastes sour, sharp, or acidic in an unpleasant way. It might taste thin or watery, like the flavor is there but muted. The finish is short and lacks sweetness. Your brew probably drained faster than expected.

Signs of over-extraction (grind too fine): The coffee tastes bitter, astringent, or ashy. There’s a drying sensation on your tongue, similar to over-steeped tea. The finish is harsh and lingering. Your brew likely took significantly longer than target time, and you may have noticed the filter bed looking muddy or clogged.

Signs of a good extraction: The cup has sweetness, balanced acidity (more like fruit than vinegar), a clean finish, and some complexity. It tastes like the coffee description on the bag, not just generically “coffee-flavored.”

When adjusting, move in small increments. One click on a hand grinder or one number on an electric grinder. Brew again with everything else identical. Taste. Repeat.

Other Variables That Interact with Grind Size

Grind size doesn’t exist in isolation. Changing one variable often means compensating with another.

Water temperature and grind size work together. Hotter water extracts faster, so if you’re brewing at 205F with a fine grind, you might over-extract. Lower the temperature or coarsen the grind. Conversely, if you prefer cooler water (around 195F for dark roasts), you may need to grind slightly finer to maintain adequate extraction.

Dose and ratio matter too. A higher dose (say 18g instead of 15g) creates a deeper bed that slows drainage. You may need to grind slightly coarser to maintain target brew time. A lower dose drains faster and may need a finer grind.

Pour rate affects contact time independent of grind size. A slow, careful pour with a gooseneck kettle extends contact time. A fast pour shortens it. Consistency here makes grind adjustment more predictable.

The Grinder Matters More Than the Setting

One final point that gets overlooked: grind size only works as a control variable when your grinder produces uniform particles. If your grinder creates a wide spread of fines and boulders, no single setting will taste right because you’re simultaneously over-extracting the small particles and under-extracting the large ones.

A quality burr grinder — even an affordable one like the Timemore C3 or the Fellow Ode — produces a tight enough particle distribution that grind adjustments actually translate to predictable flavor changes. If you’re chasing grind size with a blade grinder or a cheap ceramic burr, the problem isn’t the setting. It’s the tool. Check out our hand grinder reviews or electric grinder comparisons to find something that gives you real control.

Start in the middle, taste what you get, and adjust from there. That’s the whole method. No chart or calculator replaces the loop of brew, taste, and tweak.