Skip to main content
BrewMarkBREWMARK
1Zpresso J

Buying guide · Hand · Conical burrs

1Zpresso J

Buy it if you brew pour-over, AeroPress or French press and want a fast hand grinder with clean coarse grinds; skip it if you want to dial in espresso.

Best for
Pour-over, AeroPress, Drip, French press, Cold brew
List price
About $139
Check price — Amazon →Settings chart →

BrewMark hasn't tested this grinder in person. This guide compiles the maker's specs and published reviews, listed under Sources. As an Amazon Associate, BrewMark earns from qualifying purchases.

In brief

The J is 1Zpresso's filter-leaning hand grinder. It has a 48 mm conical burr, a foldable handle and a hopper that takes 30 to 35 g of beans, according to 1Zpresso's store page. It weighs 705 g.

The Coffee Folk reviewed it alongside the JX Pro and called it "a superb entry-level grinder offering the best bang for buck." It describes the J as best suited to pour-over. The main limit is that the J cannot be fine-tuned for espresso.

Independent coverage of the original J is thinner than for its successors. Most reviewers now write about the J-Max and J-Ultra, so some of what follows draws on reviews of the JX Pro, which shares the family's design. Treat those as pointers rather than J-specific findings.

What it does well

  • The Coffee Folk found an even grind 'with few boulders or fines', most noticeably at coarse settings
  • The 48 mm burrs grind quickly; The Coffee Folk calls the speed 'exceptional'
  • Foldable handle and 30–35 g capacity, per 1Zpresso
  • The Coffee Folk calls it 'the best bang for buck' as an entry-level grinder

Where it falls short

  • The Coffee Folk says it lacks fine adjustment for espresso
  • At 705 g it is substantial, and The Coffee Folk says it is not very travel-friendly
  • Home Coffee Expert notes that bigger hands suit the J series better, in its JX Pro review
  • 1Zpresso does not list microns per click for the J

Specs

Type
Hand grinder, Conical burrs
Burrs
48 mm conical, stainless steel
Adjustment
30 clicks per rotation
Capacity
30–35 g
Weight
705 g
Size
17 × 18.5 × 5.7 cm
Warranty
One-year limited (1Zpresso)
Power
Hand, foldable handle

Where to start on the dial

Pour-over 62 clicksAeroPress 57 clicksDrip 72 clicksFrench press 94 clicksCold brew 104 clicks

Every method on the settings chart →
On this page · 5 sections
  1. What it does well
  2. Where it falls short
  3. Who should buy it, and who shouldn't
  4. How it compares
  5. Owning it

What it does well

Coarse grinds are the standout. The Coffee Folk says both the J and the JX Pro S "produce an even grind size with few boulders or fines," and calls the coarse end "the real test." That makes the J a good fit for French press, cold brew and other coarse methods, where fines turn into sludge or bitterness.

It is quick. The Coffee Folk calls the speed "exceptional," crediting the large 48 mm burrs. Home Coffee Expert, reviewing the JX Pro, puts a typical grind at about 30 seconds, which is the same burr size and a similar family design.

The build uses aluminum and stainless steel, per The Coffee Folk, with dual bearings and a silicone grip. 1Zpresso lists 304 stainless steel, aluminum alloy and wood, and a foldable handle. The Coffee Folk notes the J gained that foldable handle, a finer-threaded catch cup and a bottom burr changed to reduce static.

1Zpresso says the burr is "expert-calibrated" and built to last up to 200 kg of grinding. That figure comes from the maker and is not independently tested.

Where it falls short

Espresso is the weak spot. The Coffee Folk says the J can grind fine enough, but "does not have the ability to fine-tune the grind setting." It has 30 clicks per rotation, and 1Zpresso does not list the size of each step. For dialing in a shot you want finer steps. The J-series espresso models, such as the J-Ultra and JX Pro, exist for that reason, per Home Coffee Expert.

It is heavy for a travel grinder. The Coffee Folk calls 705 g "pretty substantial." The foldable handle helps with storage, but it is not the lightest way to make coffee on the road.

Hand size matters. In its JX Pro review, Home Coffee Expert says the family suits larger hands and is less comfortable for smaller ones. That comment is about the JX Pro, so check how a J feels in your grip before assuming it applies.

Capacity is moderate. 1Zpresso lists 30 to 35 g of grounds. One reviewer quoted on the store page says it holds about 30 g of beans, and another says a double dose is tight.

Who should buy it, and who shouldn't

Buy it if you brew pour-over, AeroPress or French press and want clean, fast grinding without paying for espresso-level steps. The Coffee Folk recommends it as an entry-level grinder.

Skip it if you mainly pull espresso. Pick a model with finer steps. Skip it, too, if packing light matters, since The Coffee Folk calls it not very travel-friendly.

How it compares

The 1Zpresso JX Pro is the same maker's step up. Home Coffee Expert says it works well for both espresso and pour-over, with 40 stepped settings. It costs more.

The KINGrinder K6 is another external-dial hand grinder, with an adjustable dial per KINGrinder. The Timemore C3 is another filter-focused hand grinder to price against it. See our hand grinder cleaning guide for upkeep on any of them.

Owning it

1Zpresso covers the J with a one-year limited warranty on materials and workmanship. Several buyers quoted on the store page say the lowest setting still grinds fairly fine, so calibrate the zero point when you get it. 1Zpresso's store page lists the J as available to buy.

Also worth a look

Sources

  1. 1Zpresso: J Manual Coffee Grinder (store)
  2. The Coffee Folk: 1Zpresso J and JX Pro Review
  3. Home Coffee Expert: 1Zpresso JX Pro Review

By Jeff · Checked 2026-10-22