Hario Kahvimylly: Understanding Hario's Coffee Grinder Range
"Kahvimylly" is the Finnish word for coffee grinder, and if you've landed here searching for "Hario kahvimylly," you're looking for information on Hario's coffee grinders. Hario is a Japanese company that's been making coffee equipment since 1921, and they produce some of the most popular manual coffee grinders in the world. I've owned three different Hario grinders over the years, starting with a Skerton as my first-ever hand grinder, and I have a good sense of what they do well and where they fall short.
I'll cover Hario's main grinder models, how they perform for different brewing methods, the common issues you should know about, and whether a Hario grinder makes sense for your coffee setup in today's market.
Hario's Main Grinder Models
Hario makes several hand grinders at different price points. Here are the ones most worth discussing:
Hario Skerton and Skerton Pro
The Skerton is Hario's entry-level ceramic burr grinder. It was one of the first affordable hand grinders to gain popularity in the specialty coffee community, and millions of units have been sold worldwide. The Skerton Pro is an updated version with a stabilized burr that reduces wobble at coarser grind settings.
The Skerton uses ceramic conical burrs in a glass jar body. It's simple, affordable (usually $30 to $50), and gets the job done for basic coffee grinding. The Pro version adds a metal plate that holds the lower burr in place, which was the original Skerton's biggest weakness.
Hario Mini Mill (Slim)
The Hario Mini Mill, also called the Slim or Slim Plus, is a compact version designed for travel. It's smaller and lighter than the Skerton, with a slim cylindrical body that fits easily in a bag. The grind quality is similar to the Skerton, with the same ceramic burr type but in a more portable package.
Hario V60 Electric Coffee Grinder (EVCG-8)
Hario also makes an electric grinder, the EVCG-8, designed to pair with their V60 pour over system. It uses conical steel burrs and has 39 grind settings. This is a different product category entirely from the manual grinders, aimed at people who want an electric grinder that matches the Hario aesthetic.
Grind Quality: Honest Assessment
I'll be direct: Hario's manual grinders were impressive for their time, but the competition has caught up and passed them. When the Skerton launched, there weren't many affordable hand grinder options. Now, brands like Timemore, 1Zpresso, and Kingrinder offer significantly better grind quality at similar or slightly higher prices.
Where Hario Grinders Perform Well
For French press and coarse-grind methods, the Skerton Pro does a decent job. The stabilized burr keeps the grind reasonably consistent at coarser settings, and the glass jar catches grounds cleanly. My French press cups from a Skerton Pro were perfectly acceptable, full-bodied and smooth.
For AeroPress with a medium grind, Hario grinders work fine. The AeroPress is forgiving of grind inconsistency, so the wider particle distribution from ceramic burrs doesn't hurt as much.
Where They Struggle
Pour over at medium-fine settings is where Hario grinders show their age. The ceramic burrs produce more fines than steel burrs from modern competitors. These extra fines slow down your pour over draw time unpredictably and add bitterness to the cup. When I switched from my Skerton to a Timemore C2 for V60 brewing, the improvement was immediate and obvious.
For espresso, Hario manual grinders simply can't grind fine enough or consistently enough. Don't try it. Even the finest setting leaves you well short of espresso territory.
The Wobble Problem
The original Skerton (non-Pro version) has a well-documented problem: the lower burr isn't stabilized, so it wobbles at coarser settings. This wobble creates wildly uneven grinds for French press and cold brew, which are the exact methods where you'd use coarse settings. The Skerton Pro fixes this with a stabilizer plate, but if you're buying secondhand, make sure you're getting the Pro version.
The Hario V60 Electric Grinder
The EVCG-8 is a different animal from Hario's manual grinders. It uses steel conical burrs, has 39 numbered settings, and grinds quietly and quickly. The build quality is solid with a compact footprint that matches other Hario V60 products.
I've used one briefly at a friend's house, and the grind quality for pour over is respectable. It's not at the level of a Fellow Ode or Baratza Virtuoso, but it produces even medium grinds that make good V60 and Chemex cups. For people who already own a Hario V60 and want a matching grinder, it's a reasonable choice.
The electric grinder costs significantly more than the manual options, usually around $200 to $250. At that price, you're competing with the Baratza Encore, which I'd generally recommend over the Hario electric because the Encore has better parts availability and a proven track record of reliability.
Who Should Buy a Hario Grinder Today
Hario grinders still make sense for specific buyers:
- Absolute beginners on a tight budget who want their first hand grinder for under $40. The Skerton Pro gets you into the world of fresh grinding at a very low cost.
- V60 ecosystem loyalists who want matching Hario equipment. The aesthetic consistency matters to some people, and that's valid.
- Backup or travel grinders where you need something cheap and replaceable. Losing a $35 Skerton on a trip hurts less than losing a $200 Comandante.
- Gift buyers who want to give someone their first hand grinder without spending a lot.
For anyone who already cares about grind quality and cup character, I'd point you toward Timemore, 1Zpresso, or Kingrinder instead. These brands offer better burr quality and tighter particle distribution at slightly higher prices. Check the best coffee grinder roundup for detailed comparisons.
Tips for Getting the Best Results From a Hario Grinder
If you own a Hario grinder or plan to buy one, these tips will help you get the most out of it:
- Use the Skerton Pro, not the original Skerton. The stabilized burr is a meaningful improvement that costs only a few dollars more.
- Grind for forgiving brew methods. French press, AeroPress, and cold brew are where Hario grinders shine. Avoid pour over methods that demand tight grind consistency.
- Keep the burrs clean. Ceramic burrs retain more coffee oils than steel burrs. Brush them out after every few uses and do a thorough cleaning weekly.
- Don't overfill the hopper. Load only the amount you need for one dose. Overfilling slows down grinding and increases inconsistency.
- Grind at a steady, moderate pace. Cranking fast creates more heat and inconsistency. A slow, steady rhythm produces better results.
- Replace the grinder when you're ready. Hario grinders are excellent stepping stones. When you start noticing the limitations, that's your cue to upgrade rather than fight with the tool.
Frequently Asked Questions
What does "kahvimylly" mean?
"Kahvimylly" is Finnish for "coffee grinder." If you searched this term alongside "Hario," you're looking for information about Hario's coffee grinders, which is what this article covers.
Are Hario grinder parts replaceable?
Yes. Hario sells replacement burr sets and other parts for their grinders. The ceramic burrs last a long time (2 to 4 years of daily use), and when they do wear out, replacements are inexpensive and easy to install.
Is the Hario Mini Mill better than the Skerton?
They use the same burr type and produce similar grind quality. The Mini Mill is smaller and lighter, making it better for travel. The Skerton Pro has a larger capacity and the stabilized burr, making it better for home use. Pick based on whether portability or capacity matters more.
Can I upgrade the burrs in a Hario grinder?
Some aftermarket sellers offer steel burr upgrades for Hario grinders, but the improvement is limited by the grinder's overall design. If you want better burrs, you're usually better off buying a grinder that was designed around those burrs from the start.
The Bottom Line
Hario's coffee grinders are solid entry points into the world of fresh-ground coffee. The Skerton Pro remains a dependable budget option for beginners, and the Mini Mill is a cheap travel companion. But the market has evolved, and newer brands now offer better grind quality at similar prices. If you're just starting out and want something cheap to test the waters, a Hario grinder will serve you well. If you're ready to invest in real grind quality, look at what the competition offers. The top coffee grinder list is a good place to start that search.