Grind setting conversion
1Zpresso JX-Pro vs Comandante C40 MK4
The two hand grinders recipes are most often written for.
| JX-Pro | C40 MK4 | |
|---|---|---|
| Brand | 1Zpresso | Comandante |
| Scale | Clicks | Clicks |
| Dial range | 0 clicks – 200 clicks | 0 clicks – 50 clicks |
| Burrs | Conical | Conical |
| Espresso → filter | 63 clicks | 18 clicks |
| Filter → coarse | 75 clicks | 14 clicks |
The same number means different things
Both grinders use a clicks, which makes it tempting to copy a number straight across. Setting 25 clicks sits at grind index 9 on the JX-Pro but 37.3 on the C40 MK4 — 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.
| JX-Pro | C40 MK4 |
|---|---|
| 12 clicks | 8 clicks |
| 24 clicks | 11 clicks |
| 37 clicks | 15 clicks |
| 51 clicks | 19 clicks |
| 65 clicks | 23 clicks |
| 77 clicks | 27 clicks |
| 88 clicks | 29 clicks |
| 97 clicks | 30 clicks |
| 106 clicks | 31 clicks |
| 116 clicks | 33 clicks |
| 127 clicks | 35 clicks |
| 139 clicks | 38 clicks |
| 150 clicks | 40 clicks |
| C40 MK4 | JX-Pro |
|---|---|
| 8 clicks | 12 clicks |
| 11 clicks | 24 clicks |
| 15 clicks | 37 clicks |
| 19 clicks | 51 clicks |
| 23 clicks | 65 clicks |
| 27 clicks | 77 clicks |
| 29 clicks | 88 clicks |
| 30 clicks | 97 clicks |
| 31 clicks | 106 clicks |
| 33 clicks | 116 clicks |
| 35 clicks | 127 clicks |
| 38 clicks | 139 clicks |
| 40 clicks | 150 clicks |
Side by side, by brew method
Where each grinder lands for the same brew, worked out from its own dial curve.
| Method | JX-Pro | C40 MK4 |
|---|---|---|
| Espresso | 19 clicks | 10 clicks |
| Moka pot | 34 clicks | 14 clicks |
| AeroPress (short steep) | 51 clicks | 19 clicks |
| Pour over — V60 / cone | 72 clicks | 25 clicks |
| Pour over — flat bottom | 82 clicks | 28 clicks |
| Drip / batch brew | 88 clicks | 29 clicks |
| Chemex | 96 clicks | 30 clicks |
| French press | 113 clicks | 33 clicks |
| Cold brew | 134 clicks | 37 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 JX-Pro
Comandante C40 MK4
Dialing in the JX-Pro
External adjustment makes this the easiest hand grinder to actually dial, because you can count clicks without disassembling anything. Its filter range is generous, which is a mixed blessing — small click changes do less than you expect at the coarse end and more than you expect near espresso. Move in larger jumps for French press, single clicks for anything under filter.
Dialing in the C40 MK4
The reference hand grinder for filter, and its click scale has become a de facto standard — plenty of published recipes quote "C40 clicks" as though it were a universal unit. It is not, which is the reason this site exists. The MK4 runs coarser than most people assume relative to electric grinders: if you are converting a recipe written for a Baratza, do not simply match the number.
Own a different grinder?
Convert between any two of 78 models
The converter runs the same maths for any pair in the catalog.
Open the grind converter →Switching grinders mid-bag?
Log a brew, say how it tasted, and BrewMark tells you which way to move — in whichever grinder’s numbers you are actually using. Free on iOS.
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