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A boning knife is a narrow, pointed knife for separating meat from bone and trimming fat and silver skin. America’s Test Kitchen names the ZWILLING Pro 5.5-inch flexible boning knife the winner of its April 2026 review, and Bon Appétit picks the Wüsthof Classic as its best boning knife overall. Below are five boning knives with each maker’s own specs and care notes where the maker publishes them. For related guides, see our best chef knives, our best knife sets and our best paring knives.
How to choose a boning knife
America’s Test Kitchen says boning knives come in stiff, semistiff, semiflexible and flexible blades, and that it found a 6-inch flexible boning knife the most versatile option for home cooks. It describes its tests as deboning chicken breasts, trimming silver skin and fat from beef tenderloin, and removing the bone from a cooked pork shoulder roast, and it says it had a slight preference for fairly straight blades while noting that curved blades have their fans. Dexter-Russell, which makes a stiff boning knife, says a stiff blade suits the toughest cuts of beef and pork, while a flexible or thin blade struggles with them. In short, a flexible blade is the agile choice for poultry and trimming, and a stiffer one is what Dexter-Russell recommends for dense beef and pork.
America’s Test Kitchen also says you can use a paring knife in a pinch, but found the longer, more flexible boning knife blade a bit more handy overall. Wüsthof describes its boning knife as ideal for removing bones or skinning meat and poultry, and for removing tendons and fat.
How we chose
We’re a research-led site. We read each maker’s own product page on October 28, 2026 and include a knife only if we could match it to one Amazon US listing by model number and blade length. We checked the Amazon US listings on October 29, 2026. America’s Test Kitchen and Bon Appétit are the test publishers whose boning knife picks we cite; we read both pages directly. Our October 2026 search of the US CPSC recall database found no recall for any knife recommended here. We show numeric price bands rather than prices. Bands reflect observed selling prices at our last review. Offers change; check the listing.
The picks
1. ZWILLING Pro 5.5″ Flexible Boning Knife (38404-143)
What it is: A forged, 5.5-inch boning knife that Zwilling describes as having a thin, flexible blade for precise trimming. It sits in our $75–150 band.
Best for: Cooks who want the knife America’s Test Kitchen ranks first for flexible boning, and who mostly work on chicken, tenderloin and other trimming jobs.
Specs (from Zwilling’s own U.S. product page, October 2026): 5.5-inch flexible blade; special-formula high-carbon stainless steel, ice-hardened by Zwilling’s FRIODUR process; forged from a single piece (Zwilling calls it SIGMAFORGE); 55–58 HRC; full tang with a triple-riveted handle and curved bolster; made in Germany. Care: Zwilling says dishwasher safe, hand wash recommended. Warranty: Zwilling states a lifetime warranty. The page gives no edge angle.
- Pros: America’s Test Kitchen names it the winner of its April 2026 flexible boning knife review, calling it razor-sharp and incredibly nimble, and says many of its testers liked the shorter 5.5-inch blade for control.
- Cons: America’s Test Kitchen also found the 5.5-inch blade a little undersized for carving out the big shoulder bone in pork roasts. Zwilling’s page does not say how flexible it is.
2. WÜSTHOF Classic 5″ Boning Knife (1040101414)
What it is: A forged boning knife with a pointed tip, which Wüsthof lists as a 5.5-inch blade even though the product name says 5 inches. It sits in our $75–150 band.
Best for: Cooks who want a straight-bladed boning knife with a stated edge angle and honing and sharpening guidance from the maker.
Specs (from Wüsthof’s own U.S. product page, October 2026): 5.5-inch blade, 1.2 inches wide; forged; 58 HRC; 4.4-inch handle; made in Germany. Wüsthof gives a sharpening angle of 14 degrees per side for its standard blades. Care: wash by hand and towel-dry immediately, avoid abrasive sponges and soaking, and avoid cutting on hard surfaces such as metal, glass or bamboo. Warranty: Wüsthof describes it as a limited lifetime warranty. The page does not say how flexible the blade is.
- Pros: Bon Appétit names it its best boning knife overall, praising the straight blade’s clear line of sight from hand to tip and a balance between flexibility and rigidity.
- Cons: Bon Appétit says it may not be the best pick for more experienced cooks, who might prefer a curved or more flexible blade. Wüsthof’s page does not say how flexible it is.
3. Victorinox Fibrox Boning Knife, flexible curved blade (5.6613.15BK)
What it is: A 5.9-inch boning knife with the narrow, curved, flexible blade Victorinox recommends for trimming fat and sinew or deboning poultry and meat. It sits in our $25–75 band.
Best for: Cooks who want a flexible, curved blade for poultry and close trimming, from a maker that lists dishwasher use and a lifetime warranty.
Specs (from Victorinox’s own U.S. product page, October 2026): 5.9-inch blade; Victorinox says the blade is flexible and curved and lists it as not forged, with a TPE handle; 3.2 oz; made in Switzerland. Victorinox says it is dishwasher safe and covered by its lifetime warranty. The page gives no steel, hardness or edge angle.
- Pros: Victorinox says the narrow profile and flexible spine allow close, controlled work, and the maker’s page names deboning poultry and meat as an intended use. Bon Appétit names a curved Victorinox Fibrox its best budget boning knife, though its page does not give this item number.
- Cons: The product page publishes no steel, hardness or edge angle, and Bon Appétit says the curved blade of the Victorinox Fibrox it tested may take beginners some time to learn and is not as easy to sharpen as a straight blade.
4. Mercer Millennia Curved Boning Knife, 6″ (M23820)
What it is: A stamped, 6-inch curved boning knife in Mercer’s professional-kitchen Millennia line. It sits in our under $25 band.
Best for: Cooks who want a curved blade whose maker page lists its blade angle, hardness and care steps.
Specs (from Mercer Culinary’s own product page, October 2026): 6-inch (15.2 cm) curved blade; one-piece high-carbon Japanese steel; stamped; 15 degree blade angle; 53–54 HRC; Santoprene and polypropylene handle with textured finger points and a protective finger guard; NSF certified. Care: Mercer says not to wash it in a dishwasher; wash by hand with warm water and mild- to medium-strength soap, rinse, and dry with a soft towel. Warranty: limited lifetime. The page does not say how flexible the blade is.
- Pros: Mercer publishes the blade angle, hardness, construction and care steps on one page.
- Cons: It is not dishwasher-safe per Mercer, and the page does not say whether the blade is stiff or flexible.
5. Shun Classic 6″ Boning & Fillet Knife (DM0743)
What it is: A 6-inch knife that Shun describes as a narrow, sharp, curved, rigid blade for boning and filleting, handcrafted in Japan. It sits in our $75–150 band.
Best for: Cooks who want a rigid, curved Japanese blade for close trimming such as silver skin on a tenderloin or roast.
Specs (from Shun’s own product page, October 2026): 6-inch (152 mm) curved, rigid blade; VG-MAX cutting core with 34 layers of stainless Damascus cladding on each side (68 total); Shun says the core takes a 16 degree edge; D-shaped ebony-colored Pakkawood handle that Shun says suits left- and right-handed users; full composite tang; 4.2 oz (119 g). Warranty: limited lifetime. The page gives no hardness or care instructions.
- Pros: Shun says the rigid curved blade gets in close to the bone and suits trimming silver skin, and it publishes the edge angle, layer count, handle length and weight.
- Cons: Shun’s page gives no hardness or care terms, and a rigid blade follows contours less closely than a flexible one.
Boning knives compared
| Pick | Blade | Flex (maker’s wording) | Edge angle | Hardness | Care (maker) | Band |
|---|---|---|---|---|---|---|
| ZWILLING Pro 38404-143 | 5.5 in, forged | Flexible | Not stated | 55–58 HRC | Dishwasher safe; hand wash recommended | $75–150 |
| Wüsthof Classic 1040101414 | 5.5 in, forged | Not stated | 14° per side (standard blades) | 58 HRC | Hand wash, towel-dry | $75–150 |
| Victorinox 5.6613.15BK | 5.9 in, not forged | Flexible, curved | Not stated | Not stated | Dishwasher safe | $25–75 |
| Mercer Millennia M23820 | 6 in, curved, stamped | Not stated | 15° | 53–54 HRC | Not for the dishwasher; hand wash | under $25 |
| Shun Classic DM0743 | 6 in (152 mm), curved | Rigid | 16° | Not stated | Not stated | $75–150 |
What we found but didn’t recommend
Tojiro’s F-803 honesuki, a stiff Japanese poultry knife, is left out: Tojiro’s English website was under renewal when we looked on October 28, 2026, so we had no maker page to check its specifications against. Two more knives we considered, Victorinox’s extra-narrow Fibrox boning knife (5.6403.15BK) and Dexter-Russell’s Sani-Safe 6″ stiff boning knife (S115-6MO), are also left out: we couldn’t match an Amazon listing to the maker’s exact item number when we checked (October 2026).
Frequently asked questions
What is a boning knife used for?
Wüsthof describes its boning knife as ideal for removing bones or skinning meat and poultry, and for removing tendons and fat. America’s Test Kitchen says its testers use boning knives most often for minor butchery such as deboning chicken breasts or thighs, and for trimming silver skin from beef tenderloin.
Should a boning knife be stiff or flexible?
It depends on the job. Dexter-Russell says a stiff blade suits the toughest cuts of beef and pork, while Victorinox positions its flexible curved model for trimming fat and sinew and for deboning poultry and meat. America’s Test Kitchen found a moderately flexible blade best overall and said the 6-inch flexible boning knife is the most versatile for home cooks.
Curved or straight blade?
America’s Test Kitchen had a slight preference for fairly straight blades because it found it easier to direct the point, and said some testers liked a curved blade for leverage; it called the choice personal. Bon Appétit likewise says a straight blade gives a clear line of sight from hand to tip, and that a curved blade may suit more experienced cooks working around large bones.
Can a paring knife do the job of a boning knife?
America’s Test Kitchen says you can use a paring knife in a pinch for these tasks, but found the longer, more flexible boning knife blade a bit more handy overall, because its length carves out both small and large bones and its flexibility makes it more agile. See our best paring knives.
Can I put a boning knife in the dishwasher?
Follow each maker’s care line. Victorinox says its flexible curved Fibrox boning knife is dishwasher safe, Zwilling says dishwasher safe but recommends hand washing, and Mercer says not to wash its knife in a dishwasher. Wüsthof says to wash by hand and towel-dry immediately. The Shun product page we read gives no care instructions.
What angle should I sharpen a boning knife at?
Follow the maker where it states one: Mercer gives 15 degrees, Shun says its core takes a 16 degree edge, and Wüsthof gives 14 degrees per side for its standard blades. Zwilling and Victorinox give no angle on the pages we read. America’s Test Kitchen says it generally preferred models with narrow edge angles of 14 or 15 degrees.
The verdict
For America’s Test Kitchen’s winning flexible boning knife, start with the ZWILLING Pro 38404-143. The Wüsthof Classic 1040101414 is Bon Appétit’s straight-blade overall pick. The Victorinox Fibrox 5.6613.15BK is the maker-rated dishwasher-safe, flexible curved option, the Mercer M23820 is a curved blade whose maker page lists its blade angle, hardness and care steps, and the Shun DM0743 is the rigid, curved Damascus option. For related reading, see our best chef knives, our best knife sets and how we choose.
Sources & method: Specs come from each maker’s own pages, read on October 28, 2026: ZWILLING (zwilling.com, Pro 5.5-inch Flexible Boning Knife 38404-143), Wüsthof (wusthof.com, Classic 5″ Boning Knife 1040101414), Victorinox (victorinox.com, Fibrox Boning Knife 5.6613.15BK), Mercer Culinary (mercerculinary.com, Millennia Curved Boning Knife M23820), Dexter-Russell (dexter1818.com, for its stiff-blade statements) and Shun Cutlery (shun.kaiusa.com, Classic 6″ Boning & Fillet Knife DM0743). Test-publisher statements come from America’s Test Kitchen (flexible boning knife review, published April 1, 2026) and Bon Appétit (boning knife guide, April 25, 2025). Band placements come from our own October 29, 2026 review of each linked Amazon US listing. Every product was screened against the US Consumer Product Safety Commission (CPSC) recall database (October 2026 search; no recall found for any recommended knife). Here’s how we choose.