Burr or blade: how to choose a coffee grinder

Freshly ground coffee tastes noticeably better than pre-ground, and an even grind makes it more consistent. The grinder often matters more than the coffee maker.

Blade vs. burr

• Blade grinders chop beans with a spinning blade, like a small blender. They're cheap and small, but they produce a mix of fine dust and large chunks. The fine bits over-extract (bitter) and the chunks under-extract (sour) in the same cup.
• Burr grinders crush beans between two burrs set at a fixed distance. The result is much more uniform, and you choose the size precisely.

If you're buying a grinder to improve your coffee, get a burr grinder.

Conical vs. flat burrs

Both can make excellent coffee.

• Conical burrs are common in home grinders, tend to run quieter and slower, and retain less coffee in many designs.
• Flat burrs are popular in higher-end and commercial grinders and are prized by some for very even grinds.

At typical home budgets, the build quality and adjustment range of the grinder usually matter more than the burr shape.

Match the grinder to your brew method

Brew method	Grind size	What the grinder needs
French press, cold brew	Coarse	Even coarse grounds without much dust
Drip machine	Medium	Most burr grinders handle this well
Pour-over	Medium-fine	Consistency, and small adjustments
Espresso	Fine	Very fine, precise adjustment (stepless or many small steps)

Espresso is the demanding one. Small changes in grind size change shot time noticeably, so espresso grinders need fine, repeatable adjustment. Many all-purpose grinders can't go fine enough or adjust in small enough steps for espresso.

Manual vs. electric

• Hand grinders can produce excellent grind quality for the money and are quiet and portable, but grinding for several cups takes effort.
• Electric grinders are faster and more convenient for daily use.

Practical details

• Retention: some grinders keep a bit of old coffee inside, which ends up in your next cup. Low-retention designs and single-dosing help if you switch beans often.
• Static: fine grounds can cling to the container. Some grinders reduce this; a few drops of water on beans before grinding is a common home trick.
• Hopper vs. single dose: a hopper holds beans for several days; single-dosing means weighing beans each time for freshness.
• Cleaning: check that the burrs can be removed without tools for brushing.
• Noise: electric grinders are loud; slower conical grinders tend to be quieter.

Questions people ask

Is a blade grinder better than pre-ground coffee?

It gives you fresher coffee but an uneven grind. Many people find a burr grinder is where the real improvement shows up.

How long do burrs last?

It depends on the burr material and how much you grind. Many home burrs last years, and many brands sell replacements.

Can one grinder do espresso and French press?

Some can, but switching between very fine and very coarse settings takes time and may require re-dialing your espresso each time. Many people who do both eventually use two grinders.