1Zpresso · Updated July 2026
K-Ultra: price & specs
The K-Ultra costs $259, #11 cheapest of 20 coffee grinders (median $254). It earns a Bronze Deskmark — 2/100 pay-blind standing, #21 of 23 in class.
Verified Jul 7, 2026 · figures linked to their source in the table below
- Best for Exceptional grind uniformity across brew methods (Kruve-sieve verified); Very low grind retention, measured at 1.8%.
- Skip if Considerable static on the exterior of the burrs after grinding is a dealbreaker.
K-Ultra. Every price and spec below is linked to its source and dated — no guesses.
Source: 1zpresso.coffee verified ✓ corroborated verify in ledger
Is the K-Ultra a good buy?
At $259, the K-Ultra is #11 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
- 2
- Outlets on recordall tested
- 1
One independent lab measured this product across 2 physical metrics — average grind retention and grind uniformity —. These numbers rest on a single hands-on source so far.
Review consensus · sourced & dated
What reviewers say about the K-Ultra
Only one whitelisted tester (Tom's Guide) published a hands-on K-Ultra review; its ex-barista reviewer rates it among the most uniform hand grinders she's used, with Kruve-sieve-verified consistency, measured 1.8% average retention, and a travel-friendly folding handle plus hard-shell case. Downsides are considerable burr static after grinding and a fiddly, time-consuming fine micro-adjustment beyond the default range.
Tested by Tom's Guide
Consistently praised
- Exceptional grind uniformity across brew methods (Kruve-sieve verified)
- Very low grind retention, measured at 1.8%
- Compact foldable handle plus hard-shell case make it ideal for travel
- Well-built, with tactile external grind dial and magnetic catch chamber
Commonly flagged
- Considerable static on the exterior of the burrs after grinding
- Fine micro-adjustment beyond the default range is fiddly and time-consuming
- Long heavy handle caused the grinder to tip over on a few occasions during testing
Where reviewers disagree No cross-source disagreement could be assessed: only one whitelisted tester (Tom's Guide) reviewed this exact model. All consensus points therefore rest on a single hands-on source and are unverified against any second reviewer.
The sources (1)
Average grind retention (20 g input): 1.8% · Grind uniformity — medium grind passing 500 µm Kruve sieve: 90% · Grind uniformity — coarse grind passing 800 µm Kruve sieve: 30%
the 1ZPresso K-Ultra is one of the best I've ever used, hands-down.
there was a considerable amount of static on the exterior of the burrs after grinding.
I found this a little fiddly and time-consuming, so I wouldn't recommend doing this for everyday brewing.
Specifications
| Price (US) | $259 Official 1Zpresso store lists current price $259.00 (original $289.00); Amazon A+ comparison chart (1Zpresso listing) also shows $259. |
|---|---|
| Brand | 1Zpresso |
| Released | — |
| Type | manual |
| Burr type | conical |
| Burr size (mm) | 48 |
| Grind settings | Over 100 clicks (20 µm/click), external adjustment dial |
| Hopper capacity (g) | 40 |
| Best for | all |
| Weight (lb) | — |
Source: 1zpresso.coffee (verified 2026-07-07) · corroborated by amazon.com. Verified 2026-07-07 by re-fetching both pages with fetch-clean.mjs. Model confirmed exactly K-Ultra (not a K-series/J-Ultra/X-Ultra sibling) on both pages (Amazon Model Number "K-Ultra Iron Gray with Carrying Case"). 1Zpresso store page confirms: manual grinder, heptagonal conical stainless-steel "K Burr", "Over 100 clicks with 20-micron precision per step" via the external adjustment ring, foldable handle, Weight 700g (=1.54 lb), Grounds Capacity 35~40g, current price $259 (original $289). Amazon A+ corroborates: stainless-steel conical burr, "48mm Stainless Steel Burr", "over 100 clicks ... 20 microns per click", external adjustment, magnetic catch cup holding 35-40g, "All-Round" brewing method, and "$259" in its comparison chart (the buybox itself showed EUR for a Germany locale; the A+ chart lists the USD $259). burr_size_mm (48) is sourced only from the Amazon A+ content since the store page omits burr diameter. grind_settings was corrected: neither page supports "per rotation" (both state "over 100 clicks" total), so the value now reads "Over 100 clicks (20 µm/click), external adjustment dial". weight_lb 1.54 is the exact conversion of the store's verbatim 700g (Amazon rounds to 1.5 lb). hopper_capacity_g kept at 40 as the verbatim upper bound of the 35-40g grounds capacity. No release date/year appears on either fetched page, so releaseDate/release remain null. 7 of 8 spec keys survive.
Is the K-Ultra worth it vs cheaper coffee grinders?
K-Ultra against its closest cheaper and pricier coffee grinders on the specs that matter — every value sourced. See all 20 ranked →
Frequently asked questions
What do reviewers say about the K-Ultra?
Only one whitelisted tester (Tom's Guide) published a hands-on K-Ultra review; its ex-barista reviewer rates it among the most uniform hand grinders she's used, with Kruve-sieve-verified consistency, measured 1.8% average retention, and a travel-friendly folding handle plus hard-shell case. Downsides are considerable burr static after grinding and a fiddly, time-consuming fine micro-adjustment beyond the default range. Praised: Exceptional grind uniformity across brew methods (Kruve-sieve verified); Very low grind retention, measured at 1.8%; Compact foldable handle plus hard-shell case make it ideal for travel; Well-built, with tactile external grind dial and magnetic catch chamber. Flagged: Considerable static on the exterior of the burrs after grinding; Fine micro-adjustment beyond the default range is fiddly and time-consuming; Long heavy handle caused the grinder to tip over on a few occasions during testing. (From 1 tester review, 1 lab-tested.)
How much does the K-Ultra cost?
The K-Ultra has a US price of $259 (Official 1Zpresso store lists current price $259.00 (original $289.00); Amazon A+ comparison chart (1Zpresso listing) also shows $259.), as of 2026-07-07.
How does the K-Ultra compare on price?
At $259, the K-Ultra is #11 cheapest of the 20 coffee grinders we track, where the median is $254.
What are the K-Ultra's key specs?
K-Ultra (1Zpresso): type manual, burr type conical, burr size mm 48, grind settings Over 100 clicks (20 µm/click), external adjustment dial, hopper capacity g 40. Full sourced spec sheet verified 2026-07-07.
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