Which to buy · Every setting
1Zpresso J-Ultra vs KINGrinder K6
Two hand grinders cross-shopped at the same money. The J-Ultra counts 500 clicks; the K6 counts 240 clicks.
Which to buy
Choose the
J-Ultra if you…
- pull mostly espresso — 1Zpresso optimises the J-Ultra for it
- want 100 clicks a turn, 8 microns each
- want a foldable handle and a magnetic catch cup
Choose the
K6 if you…
- brew pour over — KINGrinder makes the K6 its pour-over pick
- want 60 clicks a turn, 16 microns each
- may drive it with an electric screwdriver — KINGrinder gives the bit and torque in its manual
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Sources: 1Zpresso — J-Ultra · 1Zpresso — J-Ultra manual · 1Zpresso — J-Ultra product page · KINGrinder — Store (Japan) · KINGrinder — model comparison · KINGrinder — K6 manual
| J-Ultra | K6 | |
|---|---|---|
| Brand | 1Zpresso | KINGrinder |
| Scale | Clicks | Clicks |
| Dial range | 0 clicks – 500 clicks | 0 clicks – 240 clicks |
| Burrs | Conical | Conical |
| Espresso → filter | 199.8 clicks | 71.6 clicks |
| Filter → coarse | 205.2 clicks | 57.5 clicks |
The same number means different things
Both grinders use a clicks, which makes it tempting to copy a number straight across. Setting 120 clicks sits at grind index 2.9 on the J-Ultra but 50.8 on the K6 — far enough apart to change the cup.
Converting a setting
If a recipe quotes a setting for one of these grinders, read across for the equivalent on the other. Rows are spaced evenly by grind size, not by dial number — on a conical burr those are not the same thing.
| J-Ultra | K6 |
|---|---|
| 95 clicks | 31 clicks |
| 169 clicks | 52 clicks |
| 227 clicks | 71 clicks |
| 257 clicks | 83 clicks |
| 276 clicks | 94 clicks |
| 301 clicks | 105 clicks |
| 334 clicks | 119 clicks |
| 369 clicks | 133 clicks |
| 403 clicks | 144 clicks |
| 431 clicks | 152 clicks |
| 455 clicks | 156 clicks |
| 477 clicks | 158 clicks |
| 500 clicks | 160 clicks |
| K6 | J-Ultra |
|---|---|
| 31 clicks | 95 clicks |
| 52 clicks | 169 clicks |
| 71 clicks | 227 clicks |
| 83 clicks | 257 clicks |
| 94 clicks | 276 clicks |
| 105 clicks | 301 clicks |
| 119 clicks | 334 clicks |
| 133 clicks | 369 clicks |
| 144 clicks | 403 clicks |
| 152 clicks | 431 clicks |
| 156 clicks | 455 clicks |
| 158 clicks | 477 clicks |
| 160 clicks | 500 clicks |
Side by side, by brew method
Where each grinder lands for the same brew, worked out from its own dial curve.
| Method | J-Ultra | K6 |
|---|---|---|
| Espresso | 139 clicks | 44 clicks |
| Moka pot | 218 clicks | 68 clicks |
| AeroPress (short steep) | 257 clicks | 83 clicks |
| Pour over — V60 / cone | 288 clicks | 100 clicks |
| Siphon | 302 clicks | 106 clicks |
| Pour over — flat bottom | 314 clicks | 110 clicks |
| Steep and release — Clever / Switch | 326 clicks | 115 clicks |
| Drip / batch brew | 270 clicks | 119 clicks |
| Cupping | 342 clicks | 122 clicks |
| Chemex | 368 clicks | 132 clicks |
| French press | 421 clicks | 150 clicks |
| Cold brew | 467 clicks | 157 clicks |
The shape of each dial
Where the connectors bunch, that grinder’s dial is compressed and single steps count for more. Comparing the two shapes tells you which gives finer control, and where.
1Zpresso J-Ultra
KINGrinder K6
Dialing in the J-Ultra
The J-Ultra widens the useful band relative to the J-Max, trading a little espresso resolution for genuinely usable filter and French press. If you want one hand grinder for everything, this is the one in the range that tries hardest.
Dialing in the K6
KINGrinder's all-rounder, and the value benchmark hand grinders get measured against. External adjustment, 60 clicks a rotation, at 16 microns a click — a coarser step than the 1Zpresso J and X series manage, and the one place you feel the price: espresso is dialable, but in slightly bigger jumps than a stepless grinder gives you. The 48mm stainless heptagonal burrs are what separate it from the rest of the KINGrinder line. If you only ever pull shots, the K4 is the espresso-specific sibling with titanium-coated burrs; the K6 is the one that covers pour over through espresso without being built for either.