This post contains affiliate links. If you buy through them, we may earn a small commission at no extra cost to you. Read our disclosure. Tamás is a real head chef with 25 years in professional kitchens; Gerzsi is his cartoon beaver apprentice. The illustrations and kitchen stories are just for fun; the test results come from the independent reviewers linked below.
Gerzsi’s day off: I tried to bone a chicken thigh with the big chef’s knife. The knife went one way, the bone went the other, and the thigh ended up on the floor next to Chef Tamás’s left shoe. Chef Tamás picked it up, handed me a short, skinny knife that bends a little, and pointed at the stockpot. “The bones go in there,” he said. “Not the floor.” With the right knife, the meat came off in one piece, and I only had to wash one shoe.
Gerzsi and friends are made up. The gear and the test results are real.
The short answer
Best for most people: Zwilling Pro 5.5-inch Flexible Boning Knife. America’s Test Kitchen’s winner, very sharp, moderately flexible, and it kept its edge through extra testing (about $130).
If you want to spend less: Victorinox Fibrox Pro 6-inch Flexible Boning Knife. ATK’s Best Buy and on Reviewed’s list too, with a handle that stays grippy when it’s greasy (about $32).
Why these two? The test results are below.
A boning knife has one job. It follows a bone and leaves the meat behind. The blade is short and narrow so the tip can get into joints, and most have a little flex so the edge can hug a curve. If you buy whole chickens, trim pork tenderloin or bone out a leg of lamb now and then, it saves meat and a lot of swearing. If you only ever buy boneless breasts, you can skip it and keep your money.
We didn’t test these ourselves. Two independent reviewers did, and we read both. America’s Test Kitchen published its boning knife test in April 2026 with nine knives. At Reviewed, Lindsay D. Mattison, a trained chef and butcher, broke down whole chickens, took the silverskin off pork tenderloin, butterflied pork for schnitzel and skinned fish fillets with each knife. Where the two agree, we say so. Where they don’t, we say that too.
Quick picks
The five knives, side by side
| Boning knife | Price (about) | America’s Test Kitchen | Reviewed |
|---|---|---|---|
| Zwilling Pro 5.5-inch Flexible · Check on Amazon | $130 | Winner, Highly Recommended | Not tested |
| Victorinox Fibrox Pro 6-inch Flexible · Check on Amazon | $32 | Best Buy | On the list, “not as sharp as the others” |
| Wüsthof Classic 6-inch Flexible · Check on Amazon | $120 | Recommended, a bit too flexible for chicken and pork | Best Overall |
| Mercer Millennia 6-inch Curved · Check on Amazon | $16 | Not tested | Best Value |
| Global G-21 6.25-inch Flexible · Check on Amazon | $119 | Recommended, thinnest and sharpest, hardest to control | Not tested |
1. Zwilling Pro 5.5-inch Flexible: the testers’ winner
America’s Test Kitchen put this one on top and gave it the only Highly Recommended rating in the lineup. The blade was very sharp, flexible but not floppy, and it kept its edge through extra rounds of testing. The shorter blade gave testers finer control around joints. Their one gripe was that the plastic handle could be grippier (America’s Test Kitchen).
Zwilling lists it at $129.99 on sale. It’s forged from one piece of high-carbon stainless steel, hardened to 55 to 58 HRC, with a full tang, three rivets and a matte black plastic handle, made in Germany (Zwilling). Reviewed didn’t test it, so this pick rests on one test kitchen.
Good for: people who break down chickens or trim pork often and want one knife for years. Not for: someone who bones a chicken twice a year.
2. Victorinox Fibrox Pro 6-inch Flexible: the one both testers know
This is the only knife on both lists. ATK made it a Best Buy. It hugged bones well, and the textured handle was easy to hold even wet or greasy. It wasn’t as sharp as the winner, and some testers found the handle thick (America’s Test Kitchen). Reviewed liked the textured, lightweight grip too, and said the same thing about the edge: “not as sharp as the others” (Reviewed). ATK listed it at $32.
Good for: most home cooks. It costs about a quarter of the winner. Not for: people who want the sharpest edge out of the box.
3. Wüsthof Classic 6-inch Flexible: where the testers disagree
Reviewed named it Best Overall: very sharp, thin and flexible, and it got close to the bone. They found no cons (Reviewed). ATK agreed it was among the sharpest knives in its test and sliced with ease. But ATK also found it slightly too flexible for chicken and pork work, and the handle slippery (America’s Test Kitchen). ATK listed it at $120.
One more thing. Reviewed added a note in 2022 that its exact Best Overall pick had been discontinued. ATK’s 2026 test lists the Classic 6-inch Flexible (4603-7) for sale, so check the model number before you buy.
Good for: cooks who already like Wüsthof handles and want a very sharp, bendy blade. Not for: anyone who wants a stiffer knife for chicken joints.
4. Mercer Millennia 6-inch Curved: the cheapest good one
Reviewed’s Best Value. The tester liked the comfortable, lightweight handle and found it easy to move around a bone. The trade-offs are a plastic handle and less durability than the pricier knives (Reviewed). Reviewed listed it at about $16 on Amazon. ATK didn’t test this model. It tested Mercer’s Renaissance 6-inch instead and found that its wider 18-degree edge felt less sharp.
Good for: trying out boning before you spend real money. Not for: daily butchery for years.
5. Global G-21 6.25-inch Flexible: sharpest, and the hardest to steer
ATK found it had the thinnest, sharpest blade of the nine. It was also the most flexible, which made it harder to control, and the steel handle got slick when wet or greasy (America’s Test Kitchen). ATK listed it at $119. Reviewed didn’t test it.
Good for: experienced hands who like a very thin, whippy blade. Not for: beginners or greasy pork shoulder.
ATK also gave a Best Buy to the Friedr. Herder Don Carlos 6-inch Curved Flex: razor-sharp and light at 2.7 ounces, with a handle that grips when wet. It’s thin and bendy enough to be hard to control at times. We left it out of the buttons because we couldn’t confirm a reliable US listing.
Chef Tamás’s note: At work he uses an F. Dick boning knife, one of the knives from his own kit in the seven-knife challenge. He hasn’t reviewed the knives in this guide, so the rankings above are the testers’, not his. What he does every shift is make stock out of just about everything. The bones you just cut out are not trash, and any big pot will do. There’s a cheap one in 4 cheap tools a head chef uses every shift.
Boning knife FAQ
Flexible or stiff?
A little flex helps the blade follow a bone. Too much and the knife wanders. That’s exactly where the testers marked down the Wüsthof and the Global. ATK’s winner sits in the middle, “moderately flexible.”
Is a boning knife the same as a fillet knife?
No. Reviewed tested both and kept them apart. Its fillet knives were 7 to 9 inches long and good for fish, but too long for delicate chicken work. If you mostly cook fish, buy a fillet knife. For chicken, pork and lamb, a 5.5 to 6-inch boning knife.
Can’t I just use my chef’s knife?
For a few cuts, yes. A good chef’s knife is the one knife everyone needs. But its wide, stiff blade can’t turn around a joint, so you leave meat on the bone. Ask Gerzsi’s shoe.
Curved or straight?
Both work. ATK found the curve on Victorinox’s curved boning knife awkward for tip work and preferred the straighter Fibrox Pro. Reviewed’s Best Value Mercer is curved and the tester found it easy to maneuver. Pick the handle that feels right in your hand.
How do I keep it sharp?
The same way as any kitchen knife. Hone it often, and sharpen it when honing stops helping. Our sharpening guide has the routine and the tools.
The bottom line
If you break down meat every week, the Zwilling Pro 5.5-inch is the testers’ winner and worth the money. Everyone else should get the Victorinox Fibrox Pro, the only knife both reviewers put on their lists, for about a quarter of the price. Then put the bones in a pot.
Tester-ranked. Beaver-approved.
Read next
- Meet the crew (Chef Tamás, Gerzsi and the river friends)
- Gerzsi’s adventure at The Riverbank Inn, the day he learned to use a knife instead of his teeth
- Best chef’s knives under $100
🦫 The Lodge Letter. One new adventure a week and one tested pick from the chef’s kitchen. No spam, he’s a beaver.
Sources
- America’s Test Kitchen: The Best Boning Knives (published April 1, 2026)
- Reviewed: The Best Boning Knives and Fillet Knives, by Lindsay D. Mattison (editor’s note April 12, 2022)
- Zwilling: Pro 5.5-inch Flexible Boning Knife (price, specs)
Prices checked October 2026; they change often. Serious Eats and Food & Wine also publish boning knife tests, but we couldn’t read them when this guide was written, so nothing here is attributed to them.
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Boning knives
Affiliate links. Rankings come from America’s Test Kitchen and Reviewed, linked in the guide.
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