1Zpresso · Updated July 2026

J-Ultra: price & specs

Name: J-Ultra
Brand: 1Zpresso
Price: 199 USD
Availability: InStock

The J-Ultra costs $199, #5 cheapest of 20 coffee grinders (median $254). It earns a Bronze Deskmark — 2/100 pay-blind standing, #20 of 23 in class.

Verified Jul 7, 2026 · figures linked to their source in the table below

Check current price at amazon.com Recorded 2026-07-07 — live price may differ. As an Amazon Associate we earn from qualifying purchases.

Best for Lowest measured grind retention (1.3% avg, best test 0.0g); Excellent grind uniformity across sieve tests.
Skip if Extremely top-heavy, tips over on an unstable surface is a dealbreaker.

J-Ultra. Every price and spec below is linked to its source and dated — no guesses.

Source: 1zpresso.coffee verified 2026-07-07 ✓ corroborated verify in ledger

J-Ultra — 1Zpresso — Image: 1zpresso.coffee (© 1Zpresso)

Is the J-Ultra a good buy?

At $199, the J-Ultra is #5 cheapest of the 20 coffee grinders we track, where the median is $254. On the spec sheet, its hopper capacity of 40 g is below the median of the 19, and its burr size of 48 mm is at the median of the 23.

Evidence of Record

Our data

Independent labsmeasured it: 1
Physical metricsrecorded: 3
Outlets on recordall tested: 1

One independent lab measured this product across 3 physical metrics — average grind retention, grind retention and grind uniformity. These numbers rest on a single hands-on source so far.

A coverage record, not a rating. How we count

Review consensus · sourced & dated

What reviewers say about the J-Ultra

Based on 1 review · 1 lab-tested · 2025-04-21

Tested by Tom's Guide

Consistently praised

Lowest measured grind retention (1.3% avg, best test 0.0g)
Excellent grind uniformity across sieve tests
Very low crank effort even at the finest setting
Easy tool-free disassembly and included hard-shell carry case

Commonly flagged

Extremely top-heavy, tips over on an unstable surface
Less versatile than the pricier K-Ultra
Static still present; burrs need tapping after grinding

Where reviewers disagree No cross-source disagreement is possible: only Tom's Guide passed the whitelist with a real hands-on, lab-measured review of this exact model, so the consensus rests on a single tester.

The sources (1)

Tom's Guide lab-tested · 2025-04-21

Average grind retention (20g dose, medium grind): 1.3% · Grind retention, best of three tests: 0.0g · Grind uniformity, fine setting (grounds captured by 500μm sieve): 100%

The J-Ultra had the lowest retention and one of the most uniform grinds I've ever seen.

Even when I was grinding on the finest setting, I could rotate the crank with very little bicep distress.

the J-Ultra is extremely top heavy and prone to falling over should it not be on a stable surface.

Specifications

Price (US)	$199 Official 1Zpresso store lists "$ 199.00" with the note "The price above is in USD"; the Amazon A+ comparison chart on the 1Zpresso listing also shows "$199" for the J-Ultra (the Amazon buybox itself displayed EUR 174.21 for a Germany delivery locale).
Brand	1Zpresso
Released	—
Type	manual
Burr type	conical
Burr size (mm)	48
Grind settings	100 clicks per rotation (8 µm/click), external dial
Hopper capacity (g)	40
Best for	espresso
Weight (lb)	—

Source: 1zpresso.coffee (verified 2026-07-07) · corroborated by amazon.com. The official 1Zpresso J-Ultra product page (source.url, accessed 2026-07-07) states verbatim "J-Ultra Manual Coffee Grinder", price "$ 199.00" ("The price above is in USD"), "Optimized for espresso, the coated burr enhances sweetness and precision with 8-micron adjustments", "Weight: 700g", and "Grounds Capacity: 35-40g", with the product filed under the store's Espresso category — but it names only a "coated burr" (no burr shape, diameter, or click count). The Amazon listing (corroboration, ASIN B0CKYDV932, Model Number "J-Ultra Iron Gray", "Power Source: manual") confirms the exact model and supplies the specs the manufacturer page omits: title "Conical Burr", "48mm Coated Burr", and "external adjustment with 100 clicks per rotation, 8 microns each click ... perfect for espresso", plus a comparison chart listing the J-Ultra at "$199", "Espresso", "External", "8" microns/click, "35-40g". burr_type=conical and burr_size_mm=48 are sourced from the Amazon page; weight_lb=1.54 is the conversion of the verbatim 700g; hopper_capacity_g=40 is the verbatim upper bound of the 35-40g grounds capacity. Neither fetched page states a release year, so releaseDate and specs.release are left null. Re-verification 2026-07-09: both URLs re-fetched, every non-null spec value plus priceUsd confirmed verbatim against the correct model (disambiguated from the K-Ultra column in the Amazon chart); no corrections required. 7 of 8 spec keys are non-null.

Is the J-Ultra worth it vs cheaper coffee grinders?

J-Ultra against its closest cheaper and pricier coffee grinders on the specs that matter — every value sourced. See all 20 ranked →

Product	Price	Type	Burr type	Burr size (mm)	Grind settings	Hopper capacity (g)
J-Ultra this	$199	manual	conical	48	100 clicks per rotation (8 µm/click), external dial	40
Encore	$149.95	electric	conical	40	40 stepped	—
Encore ESP	$199.95	electric	conical	40	40 stepped (steps 1-20 espresso at 20µm/click, 21-40 filter at ~90µm/click)	227

Frequently asked questions

What do reviewers say about the J-Ultra?

One whitelisted tester (Tom's Guide) produced a verified hands-on review of the exact 1ZPresso J-Ultra. The ex-barista author's lab tests measured 1.3% average grind retention (0.0g on the best of three runs) and near-perfect grind uniformity, praising the very low crank effort even at the finest setting, while flagging the grinder as extremely top-heavy and less versatile than the pricier K-Ultra. All three quotes and all three measured values were confirmed as literal matches in the source text. Praised: Lowest measured grind retention (1.3% avg, best test 0.0g); Excellent grind uniformity across sieve tests; Very low crank effort even at the finest setting; Easy tool-free disassembly and included hard-shell carry case. Flagged: Extremely top-heavy, tips over on an unstable surface; Less versatile than the pricier K-Ultra; Static still present; burrs need tapping after grinding. (From 1 tester review, 1 lab-tested.)

How much does the J-Ultra cost?

The J-Ultra has a US price of $199 (Official 1Zpresso store lists "$ 199.00" with the note "The price above is in USD"; the Amazon A+ comparison chart on the 1Zpresso listing also shows "$199" for the J-Ultra (the Amazon buybox itself displayed EUR 174.21 for a Germany delivery locale).), as of 2026-07-07.

How does the J-Ultra compare on price?

At $199, the J-Ultra is #5 cheapest of the 20 coffee grinders we track, where the median is $254.

What are the J-Ultra's key specs?

J-Ultra (1Zpresso): type manual, burr type conical, burr size mm 48, grind settings 100 clicks per rotation (8 µm/click), external dial, hopper capacity g 40. Full sourced spec sheet verified 2026-07-07.