Quick Answer: The Niche Zero is the best single dose grinder overall for 2026 — Niche states its conical burrs retain under 0.1 grams of coffee between doses, so nearly everything you weigh in ends up in the portafilter. The DF64 Gen 2 is the best value pick, pairing 64mm flat burrs with a single-dosing bellows design for roughly half the Niche’s price. If you’re on a tight budget or want to grind without power, the Kingrinder K6 hand grinder brings the same low-retention principles to a sub-$150 manual grinder.
Single dosing means weighing out exactly the beans you need for one shot and grinding them fresh, right before you brew — no standing hopper full of beans slowly going stale. It’s the workflow serious home baristas have converged on, but it only works if the grinder itself doesn’t hoard half your dose inside the burr chamber. We rounded up the grinders actually engineered for it, from a $129 hand crank to the enthusiast-favorite Niche Zero.
Single dosing, by the numbers
- Under 0.1 g retention: Niche’s own spec for the Zero’s conical burr chamber — low enough that the coffee left behind between doses is effectively negligible.
- Under 0.2 g retention: Eureka’s published figure for the Mignon Zero, achieved with rubber bellows that physically push grounds out of the 55mm flat burr chamber rather than relying on gravity.
- 64mm burrs: the flat-burr diameter on both the DF64 Gen 2 and the Timemore Sculptor 064S — larger than the 55mm burrs common on hopper-fed home grinders, which grind faster and cooler at the same fineness.
Our top picks at a glance
| Grinder | Best for | Burr type | Price | Rating |
|---|---|---|---|---|
| Niche Zero | Best overall | Conical, 63mm | ~$629 | ★★★★★ |
| DF64 Gen 2 | Best value | Flat, 64mm | ~$300 | ★★★★½ |
| Eureka Mignon Zero | Best flat-burr / quiet | Flat, 55mm | ~$449 | ★★★★★ |
| Kingrinder K6 | Best budget / manual | Conical steel | ~$129 | ★★★★ |
| Timemore Sculptor 064S | Best RPM-adjustable | Flat, 64mm | ~$599 | ★★★★½ |
1. Niche Zero — Best Overall
Niche Zero
- Niche states under 0.1 g retention — essentially true single-dosing with no meaningful waste.
- 63mm conical burrs give a rounded, sweet cup rather than razor-edge clarity.
- Furniture-grade wood-and-metal body designed to sit on the counter, not hide in a cabinet.
- Stepless adjustment via a smooth top collar; no bellows or catch cup needed to hit near-zero retention.
The Niche Zero is the grinder most single-dosing enthusiasts save up for. Its single-auger conical burr set was engineered from the ground up around one goal — grind the dose you put in and nothing else — and Niche’s own retention figure of under 0.1 g backs that up better than any bellows-assisted design manages. There’s no catch cup to empty or bellows to squeeze; you weigh beans into the funnel, grind, and the portafilter gets almost the exact amount you started with. Since single-dosing means you burn through whole-bean bags faster than a hopper-fed grinder ever does, Amazon Fresh is worth having set up to keep fresh beans arriving on the same schedule as your regular grocery order. It costs roughly double the DF64 Gen 2, but for buyers who’ve decided single-dosing is a permanent habit rather than an experiment, it’s the grinder that disappears into the routine.
2. DF64 Gen 2 — Best Value
DF64 Gen 2
- 64mm flat burrs — larger than most home grinders — for fast, cool grinding.
- Bellows-assisted single-dosing funnel keeps retention low without the Niche's price.
- Swappable burr set appeals to tinkerers who want to upgrade later.
- Static can cause clumpy grounds without an RDT water-spritz first.
The DF64 Gen 2 is the grinder that made single-dosing affordable in the first place, and it’s still the pick for anyone who wants flat-burr clarity without flagship pricing. The 64mm burrs are the same diameter used in many commercial grinders, and the built-in bellows push residual grounds out of the chamber after every grind — not quite Niche-level retention, but close enough that most owners never notice a difference in the cup. It pairs naturally with a semi-automatic espresso machine and is the grinder most often recommended as the first real upgrade from an entry-level hopper-fed unit.
3. Eureka Mignon Zero — Best Flat-Burr / Quiet
Eureka Mignon Zero
- 55mm flat steel burrs with Eureka's ACE anti-clump system to cut static.
- Eureka rates retention under 0.2 g thanks to rubber bellows behind the burr chamber.
- Silent Technology motor mount makes it one of the quietest single-dose electrics.
- Smaller burrs than the DF64 or Sculptor mean a slightly slower grind for the same fineness.
The Mignon Zero takes Eureka’s well-known Mignon platform — already a favorite for its quiet motor mount — and rebuilds the chute specifically for single dosing. The ACE anti-clump system pairs with the bellows to fight the static that otherwise sends grounds flying past the portafilter, and Eureka’s under-0.2 g retention spec puts it right alongside the DF64 as a near-zero-waste option. It’s the pick for anyone who wants flat-burr clarity in a compact, quiet body rather than the Niche’s larger conical-burr footprint.
4. Kingrinder K6 — Best Budget / Manual
Kingrinder K6
- Hand-crank grinder that's inherently single dose — no hopper to fill.
- Steel conical burrs hold a fine, consistent espresso setting for the price.
- No power needed, and it travels easily for a hotel-room or office setup.
- Grinding a double-shot dose by hand takes real effort and 40-plus seconds.
You don’t need an electric motor to single dose — you just need a chamber that doesn’t hoard beans, and the Kingrinder K6 nails that at a fraction of the price of anything else here. Beans go in right before grinding, exactly the single-dosing principle the pricier electrics are chasing, and the steel conical burrs hold a fine enough setting for genuinely good espresso. It’s the pick for a tight budget, a small kitchen, or anyone who wants to test whether single-dosing fits their routine before spending $300-plus to find out. If you’re comparing it against other manual options, our best manual coffee grinder guide covers the wider hand-grinder field.
5. Timemore Sculptor 064S — Best RPM-Adjustable
Timemore Sculptor 064S
- 64mm flat burrs with an adjustable motor speed, a rare feature at this price.
- Single-dosing funnel and catch-cup design built around low retention.
- Digital display shows grind time and RPM setting for repeatable dosing.
- A newer, smaller-community brand than Niche or Eureka, so fewer long-term reviews exist.
The Sculptor 064S is for the tinkerer who wants one more variable to chase: grind speed. Lowering the RPM slows the burrs down, which can mean cooler grinding and less static on lighter roasts, and the digital display makes that setting repeatable instead of guesswork. Combined with 64mm flat burrs and a single-dosing funnel, it competes directly with the Niche Zero on price while offering a completely different kind of control. It’s a newer platform than the decade-old Niche or the long-running Eureka Mignon line, so weigh that against the extra adjustability if brand longevity matters to you.
How to choose a single dose grinder
- Decide if retention actually matters to you. If you grind the same bag of beans every day at the same dose, a hopper-fed grinder’s retention barely matters. Single dosing pays off most when you switch beans often or weigh doses precisely.
- Conical vs. flat burrs. The same trade-off as any espresso grinder: conical burrs like the Niche Zero’s give a rounder, sweeter cup, while flat burrs like the DF64’s or Mignon Zero’s give more clarity and separation.
- Budget for the whole workflow, not just the grinder. A single-dose grinder pairs naturally with a precision scale to weigh doses and a WDT tool to break up static clumps before tamping.
- Manual vs. electric. A hand grinder like the Kingrinder K6 gets you single-dosing’s core benefit — no stale standing hopper — for a fraction of the price, if you don’t mind the extra 30-40 seconds of arm work per shot.
- Match it to how you buy beans. Single dosing works best with fresh, frequently-rotated beans rather than a bulk bag that sits for weeks — see our best espresso beans guide for roasters that ship in small, fast-turnover batches.
The bottom line
The Niche Zero is the single dose grinder to buy if near-zero retention and a decade of enthusiast track record matter more than price — Niche’s own under-0.1 g spec is still the benchmark the rest of this category is measured against. Want most of that benefit for about half the money? The DF64 Gen 2 is the value pick, and the Eureka Mignon Zero is the quieter, flat-burr alternative if you already trust the Mignon platform. On a tight budget, the Kingrinder K6 proves single dosing doesn’t require an electric motor at all, and the Timemore Sculptor 064S is worth a look if RPM control is a variable you actually want to tune. Whichever you pick, low retention only solves half the consistency problem — see our best espresso grinder guide for how burr type and adjustment style shape the rest of the shot, and our espresso grind size guide for dialing in once your grinder is set up.