Grinder · Reviewed 2026-04-25 · Updated 2026-07-28
1Zpresso J-Ultra Review
The best hand grinder we've tested — espresso-grade adjustment with 8-micron clicks and silky build quality.
8-micron click adjustment rivals electric grinders at the same price.
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Current UK price
£179.87
Our verdict
8-micron click adjustment rivals electric grinders at the same price. It earns a 4.8/5 because, after measuring 45 s and pushing it through our standard 40-shot protocol, it does what it claims — consistently and without drama. Best for: Travel, espresso purists, and anyone who wants grinder quality on a budget.
Pros & cons
What we love
- 8-micron clicks = real espresso dial-in
- Exceptional build quality
- Zero retention by design
- Tiny footprint, brilliant for travel
What could be better
- Manual grinding takes effort
- Small capacity (~35 g)
- Takes a minute per dose
How it performed
Our measurements
- Grind time (18 g espresso)
- 45 s
- Retention
- 0 g (measured)
- Uniformity vs Encore ESP
- Equal in sifting
- Effort
- Moderate
All measurements from our standard 40-shot test protocol. Full methodology on How We Test.
Specs at a glance
- Burr
- Conical steel, 48 mm
- Adjustment
- 8 µm per click
- Capacity
- 35 g
- Weight
- 710 g
- Clicks
- 90 total
Who should buy it?
Buy the 1Zpresso J-Ultra if travel, espresso purists, and anyone who wants grinder quality on a budget. Skip it if you need manual grinding takes effort.
See it ranked
Frequently asked questions
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