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The Best Fillet Knife - 2021

Last updated on August 25, 2021

We looked at the top 12 Fillet Knives and dug through the reviews from 128 of the most popular review sites including and more. The result is a ranking of the best Fillet Knives.

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Our Picks For The Top Fillet Knives

Show Contents
Our Take
Experts Included
Pros
Cons
  Best Overall

Rhinoreto Flexible 5-Inch Fillet Knife

Don't Waste Your Money Seal of Approval

Rhinoreto

Flexible 5-Inch Fillet Knife

Overall Take

Sheath and Sharpener IncludedYou'll find this fillet knife is available in 5, 6.5 and 8-inches.

Experts Included
DWYM Kitchen Experts plus . Along with user reviews from Amazon.
  Best Value

Calamus Stainless Steel 9-Inch Fillet Knife

Calamus

Stainless Steel 9-Inch Fillet Knife

Overall Take

Affordable Price TagThe longer blade on this fillet knife makes quick work of filleting and steaking your latest catch.

Experts Included
DWYM Kitchen Experts plus . Along with user reviews from Amazon.
  Ergonomic Handle

Victorinox 6-Inch Boning Knife

Victorinox

6-Inch Boning Knife

Overall Take

Delicate and StrongThis fillet knife can help you debone delicate fish or poultry in the kitchen.

Experts Included
DWYM Kitchen Experts plus Foodal, Ktchn Dad, Best Fillet Knife Reviews, Biohackers Lab, Knife Guides, Sullivan Steak House and 4 more. Along with user reviews from Amazon.
Pros
" The stamped blade is constructed of high-carbon stainless steel for superb rust and corrosion resistance, and is ice-tempered to 58 HRC for durability and toughness.The sharp cutting edge has a conical grind for a wide break point – which makes..."
Cons
"This is a specialty knife; it only has one purpose."
  Also Consider

Mercer Culinary 8 Inch Fillet Knife

Mercer Culinary

8-in Fillet Knife

Overall Take

Narrow, Thin and Pointed BladeThe Mercer Culinary 8-in Fillet Knife has a strong blade and finger guard.

Experts Included
DWYM Kitchen Experts plus BestReviews, Ktchn Dad, Kitchen Aria, OutsideHow, YoDiv, Easy Recipe Depot and 29 more. Along with user reviews from Amazon and WebstaurantStore.
Pros
" Soft, nonslip handle comes in eight colors. Protective finger guard. Comfortable to hold and easy to manuever."
Cons
"The knife does not have a full tang or rivets to secure the blade to the handle which can cause problems down the road."
Don't just take for granted what one reviewer says. Along with our own experts, DWYM analyzes the top expert reviews of the leading products and generates a score you can actually trust.
19

Products Considered

We identified the majority of the fillet knives available to purchase.
12

Products Analyzed

We then selected the leading and most popular products for our team to review.

View All Product Rankings

128

Expert Reviews Included

In addition to our expert reviews, we also incorporate feedback and analysis of some of the most respected sources including: Offers.com, Globo Turf, Chooserly, YoDiv, Amazing Outdoor Adventures.

23,947

User Opinions Analyzed

We also incorporate user reviews from the leading retailers including

Our experts reviewed the top 12 Fillet Knives and also dug through the reviews from 128 of the most popular review sites including and more. The result is a ranking of the best of the best Fillet Knives.

DWYM is your trusted roduct review source. Our team reviews thousands of product reviews from the trusted top experts and combines them into one easy-to-understand score. Learn more.

Don't Waste Your Money Seal of Approval
Look for the DWYM seal for products that are the best in their category.

The Best Overall

Rhinoreto Flexible 5-Inch Fillet Knife

User Summarized Score

9.2
1,791 user reviews

Our Take

The stainless steel blade on this fillet knife is flexible and designed to resist rust. The knife is also outfitted with a rubber handle that provides an excellent grip for better control. As an added bonus, the knife comes with a protective sheath and a double-sided sharpener.


The Best Bang For Your Buck

Mercer Culinary 8 Inch Fillet Knife

Our Expert Score

9.5
35 expert reviews

User Summarized Score

9.6
4,170 user reviews

Our Take

The Mercer Culinary 8-in Fillet Knife is made out of high-quality Japanese steel, and will not break or chip. The handle is textured to avoid slipping while in use. However, it does not include a sheath, and can dull quickly.

What other experts liked

Soft, nonslip handle comes in eight colors. Protective finger guard. Comfortable to hold and easy to manuever.
- BestReviews
This knife has a perfectly thin blade and is very narrow and pointed. This is the essence that must be present in a good fillet knife.
- Ktchn Dad
The 8-inch, a non-tapered blade is constructed of high carbon Japanese steel which makes the blade extra strong. This will prevent the blade from breaking or chipping when in use.
- Kitchen Aria
To minimize the risk of the knife slipping, the finger points have built-in texture. This allows the user to maintain their grip more easily even when filleting fish.
- OutsideHow
Thanks to its specially textured finger points, it provides safety with a comfortable grip and is resistant to slipping. With a blade made from premium grade Japanese steel, it is easy to take care of and can be sharpened to maintain its razor sharp edge.
- YoDiv
A finger guard provides some protection from accidents, as do the built-in textured finger points. With a razor-sharp edge straight out of the box, this knife is meant for demanding institutional settings, and has been NSF certified for use in commercial kitchens.
- Easy Recipe Depot
The Mercer Culinary Millennia Narrow offers a blade that's easy to maneuver and an ergonomic handle that combines Santoprene and polypropylene for comfort and durability. It's resistant to rust and corrosion, and the super-sharp edge cuts through meat and fish like butter.
- Wiki EZ Vid
Based on the design of most fillet knives, the Mercer Culinary fillet knife isn’t an exception. It’s a narrow fillet knife which gets the job done with relative ease.As expected, it features a Santoprene handle. The handle is made from a mixture of Santoprene and Polypropylene. One thing is certain,...
- Cookwared
The finger guard on this model is comfortable, it is durable and offers all the protection you will ever need.
- Knife Guides
This design has a handle which is ergonomic as which crafted from comfort-promoting Santoprene and durable Polypropylene.
- 5 Product Reviews
This Mercer knife has textured finger points for slip-resistant control and engineered with a protective finger guard where the blade meets the handle.
- Best Pickist
As for aftercare, it’s pretty much no-brainer. All you have to do is wash it carefully with soap and warm water and dry it with a dry towel then store in a cutlery block or sheath to prevent injuries and preserve the cutting edges.
- Daring Kitchen
The blade is made perfect for filleting fish. It is narrow, razor sharp, and 8 inch long, which gives it the perfect stiffness and flex for cleaning large fish precisely and effortlessly.
- Globo Turf
This reliable knife features textured finger points for added slip resistance and a protective finger guard for good measure. With a blade made from high-quality Japanese steel, most users find this particular knife to be very easy to maintain and sharpen.
- Noble Rate
This one is relatively affordable and as such, you need not to worry about using much cash when purchasing or maintaining this blade.The knife is easy to control and maneuver meat with little effort.
- Knives Sensei
Despite its low price point, this knife is made of high-carbon stainless steel from Japan, so it resists rust and damage. Its textured handle is made of a mix of Santoprene and polypropylene, which makes it both comfortable and long-lasting. The ergonomic plastic handle is available in a range of...
- Tasty Kitchenn
The textured finger points makes it slip resistance, making it easier to hold while cutting fishes. A good filleting knife requires to have a high-quality stainless steel, and Mercer Culinary Millennia is made of high-quality Japanese steel. It is also fairly easy to sharpen the edge with less effort.
- Kayak Base
It has an ergonomic handle that’s made of polypropylene and Santoprene for added durability and comfort, and it has a finger guard that keeps the user’s fingers safe.
- Savant Magazine
The high-carbon, Japanese steel blade is easy to maintain and sharpens to a razor sharp edge. It won’t rust, corrode, or discolor and has a stiff flexibility that’s great with larger pieces of meat. The handle is pretty impressive, too.
- Geek Wrapped
The knife is also unique in the way; it caters to user safety. The handle of this knife is ergonomically built and the material used is a combination of Santoprene and polypropylene. This ensures both comfort and durability. The handle also has a firm slip-resistant grip. This comes equipped with...
- Outdoor Gear Only
High carbon Japanese hard steel was used for the blade, to ensure both good cutting performance and excellent edge retention, meaning you won’t be needing to sharpen it as often as you would with softer knives (we feel the need to mention that it also comes pre-sharpened to a very...
- Fisher Pants
The ergonomic handle is a mixture of Santoprene for comfort and polypropylene for longevity. You can pick your favorite blade color, from classic black to modern white. Your finger will be safe thanks to the finger guard on the handle while the finger points on it will ensure there is...
- Knife Verge
The sturdy construction from top-notch materials makes it very durable and will serve you for many years to come.
- Home KuKu
Mercer culinary fillet knife is versatile and precise. It’s narrow and semi-flexible blade allows effortless filleting of delicate fish. It’s also easier to trim the fat from meat.
- Top Review Geek
The blades consist of the ever so coveted carbon-based Japanese steel and come with a Santoprene and polypropylene handle. The knives are simple and minimalist, which is what I personally love to see in fillet knives. They do one thing and they do it exceptionally well!
- Global Fishing Reports
The blade is constructed specially to fillet fish. It is thin, razor sharp and 8inch long, which provides great rigidity and flex for cleaning big fish accurately and effortlessly.
- OutdoorHunt
Textured finger points provide slip resistance, grip, and safety
- Fishing Rex
Its handles are manufactured from Santoprene to deliver comfort as well as polypropylene to guarantee durability. The textured finger grips of the handle allow for reduced instances of slipping because of its improved grip. The handle has been engineered to widen its junction point for the protection of the fingers.
- Outdoor Recreation
Ergonomic handle that consists of santoprene for comfort as well as polypropylene for long-lasting durability
- USAngler
To provide the best possible tool for filleting fish, the blade is narrow, but it is also flexible too, which will help enormously when trying to fillet delicate fish, or when trimming fat from pieces of meat or poultry.
- Choppy Choppy
This design has a handle which is ergonomic, which is crafted from comfort-promoting Santoprene and durable Polypropylene. The knife features a finger guard for optimal protection, as well as finger points which are textured in order to provide safety, grip and slip resistance.
- Fillet Knife Guide
This knife blade made of high-carbon superior quality Japanese steel for sharpening the edge fast and easy. The non-staining Japanese steel will protect the blade from rust and corrosion. This beautiful super flexible fish gutting knife handle has a small combination of Santoprene which makes it more comfortable to hold...
- Life with Kitchen
Mercer fillet knife is a full-tang knife for added durability and provide seamless filleting of fish meat and bones. The blade is attached to an ergonomic handle made with a combination of Santoprene and polypropylene. Both these materials make the handle extremely comfortable and durable.
- OutdoorGearToday
The Mercer 8” fillet knife is a blend of American ingenuity and Japanese technology. It brings the ease of use and durability. The handle is made from a mixture of Santoprene and Polypropylene that allow for better comfort and grip.
- Kayak Fishing Hole

What other experts didn't like

Users have said that this knife dulls fairly quickly and requires regular resharpening.
- BestReviews
The knife does not have a full tang or rivets to secure the blade to the handle which can cause problems down the road.
- Kitchen Aria
The size is larger than some people prefer.
- OutsideHow
No blade cover included.
- Easy Recipe Depot
The blade is not cold-tempered.
- Best Pickist
Very large.
- Kayak Base
Though just 1% of users are unsatisfied, the company may well pay heed to the fact that they have raised questions about the efficiency of the blade and sharpness.
- Outdoor Gear Only
A few users mentioned they would like the blade to be just a bit thinner.
- Fisher Pants
Be that as it may, some customers were not satisfied with the sharpness of the blade, that is, its durability. They claim it went dull pretty quick.
- Knife Verge
Arrives dull.
- Home KuKu
I was not impressed that the knife has no sheath.
- Top Review Geek
Unfortunately, these don’t come with a sheath, so you may want to invest in one or keep them in tightly packed in storage.
- Global Fishing Reports
Unexpectedly, the knife doesn’t come with a sheath.
- OutdoorHunt
Flexibility can be a drawback, especially when improperly handles by the seller; the tip can bend with improper packaging.
- Outdoor Recreation
Takes some skill to fillet.
- Choppy Choppy
This blade is very sharp but doesn’t come with knife guard.
- Life with Kitchen
Balancing issues,
- OutdoorGearToday

Overall Product Rankings

Rhinoreto Flexible 5-Inch Fillet Knife

1. Rhinoreto Flexible 5-Inch Fillet Knife

Overall Score: 9.8
Reviews Included: 1

Calamus Stainless Steel 9-Inch Fillet Knife

2. Calamus Stainless Steel 9-Inch Fillet Knife

Overall Score: 9.6
Reviews Included: 1

Victorinox 6-Inch Boning Knife

3. Victorinox 6-Inch Boning Knife

Overall Score: 9.5
Reviews Included: 12

KastKing Fillet Knife 9 inch

4. KastKing Fillet Knife 9 inch

Overall Score: 9.4
Reviews Included: 18

Mercer Culinary 8 Inch Fillet Knife

5. Mercer Culinary 8 Inch Fillet Knife

Overall Score: 9.3
Reviews Included: 38

KastKing Fillet, Boning & Food Prep Knives

6. KastKing Fillet, Boning & Food Prep Knives

Overall Score: 9.2
Reviews Included: 2

WÜSTHOF 7 Inch Fillet Knife

7. WÜSTHOF 7 Inch Fillet Knife

Overall Score: 9.2
Reviews Included: 3

DALSTRONG Fillet Knife

8. DALSTRONG Fillet Knife

Overall Score: 9.2
Reviews Included: 24

imarku Boning Knife

9. imarku Boning Knife

Overall Score: 9.0
Reviews Included: 6

Rapala Soft Grip Fillet

10. Rapala Soft Grip Fillet

Overall Score: 8.9
Reviews Included: 29

Fish Elite 9 Inch Fillet Knife

11. Fish Elite 9 Inch Fillet Knife

Overall Score: 8.8
Reviews Included: 2

Chicago Cutlery Fillet Knife

12. Chicago Cutlery Fillet Knife

Overall Score: 8.7
Reviews Included: 11

Our Fillet Knife Findings


Rhinoreto Flexible 5-Inch Fillet Knife

What We Liked: The stainless steel blade on this fillet knife is flexible and designed to resist rust. The knife is also outfitted with a rubber handle that provides an excellent grip for better control. As an added bonus, the knife comes with a protective sheath and a double-sided sharpener.

Simplemost Media


Calamus Stainless Steel 9-Inch Fillet Knife

What We Liked: No fishing kit is complete without this fillet knife. It’s made using a German stainless steel that’s corrosion resistant and extremely durable. Since the knife also includes a sheath and attractive gift box, it makes for an excellent Christmas present.

Simplemost Media


Victorinox 6-Inch Boning Knife

What We Liked: This fillet knife is a handy tool for any kitchen. It can help you debone or trim meat, thanks to its pointed tip and curved edge. It also has an ergonomic non-slip handle.

Simplemost Media


KastKing Fillet Knife 9 inch

What We Liked: This fillet knife is crafted with a sharp stainless-steel blade, and has a polymer grip non-slip handle for safety and comfort. The blade of the knife has a unique black finish, and comes with an open-slot sheath. However, it does not include a sharpener.

Simplemost Media


Mercer Culinary 8 Inch Fillet Knife

What We Liked: The Mercer Culinary 8-in Fillet Knife is made out of high-quality Japanese steel, and will not break or chip. The handle is textured to avoid slipping while in use. However, it does not include a sheath, and can dull quickly.

Simplemost Media

Our Expert Consultant

Julie Chernoff
Culinary Expert

Julie Chernoff is a long-time member of Les Dames d’Escoffier (past president of the Chicago Chapter, and current co-chair of the LDEI Legacy Awards Committee), the Association of Food Journalists (AFJ) and the International Association of Culinary Professionals.

Chernoff is the dining editor of Better, a lifestyle website and print magazine. Her journalism started in the test kitchens of Weight Watchers Magazine. She holds a BA in English from Yale University and is a graduate of the California Culinary Academy. She has spent the last few decades styling, photographing, teaching, developing recipes, editing, thinking and writing about food.

Our Fillet Knife Buying Guide

Whether you enjoy catching your own fish, or purchasing whole fish from the fishmonger at the local market, a fillet knife is a useful tool to have. When you want to expertly clean and debone your fish, a sharp, exact fillet knife is a great way to make safe and accurate cuts. You don’t need to be a professional chef or a fish connoisseur to use a fillet knife either, as it’s a great tool for home cooks and professionals alike.

Simplemost Media

“A good fillet knife can be used for skinning, deboning and filleting fish,” says our culinary expert Julie Chernoff. “If you can find a fillet knife that does all three, then you’re in good shape.”

One of the specific characteristics of a fillet knife is that the blade is flexible, unlike other kitchen knives. This flexibility of the blade enables cooks to have greater control over their cuts, so that no edible parts of the fish are wasted. The flexible blade can maneuver around hard surfaces, such as bones or scales, to remove the pieces of desired flesh.

Simplemost Media

What makes a fillet knife blade so flexible? It’s all in the design. It is often made out of special steel that allows for that unique flexibility. Plus, the blades are long, usually between seven to nine inches. The thickness and width of the blade also affect the amount of flexibility in the blade. When searching for a good fillet knife, be sure to check how flexible the blade is.

Simplemost Media

“Look for a full-tang, riveted-handle knife for stability,” says Chernoff. “The blade should have a substantial shoulder where it connects to the handle for added protection from the slippery fish and to have something to brace your hand against to keep it from coming in contact with the blade.”

Simplemost Media

In order to expertly fillet a fish, begin by removing the scales of the fish with the backside of the blade. You can then remove the fins and take off all of the skin. Next, take out the entrails of the fish with the fillet knife. Be sure to wash out the space inside with water.

After that, slice the fish fully open lengthwise. You can use your fillet knife to mark the fillets on either side. Using the flexible blade of the fillet knife, take out the fillets very carefully so as not to tear them. This technique can be used on most types of fish. Remember to always use a sharp and flexible fillet knife to make exact cuts.

DWYM Fun Fact

While a fillet knife is designed specifically for use on fish, it’s unique design and flexible blade also make it good for other uses in the kitchen. It can be used on other types of delicate meat, where exact knife-work is important. For example, a fillet knife can be used to trim fat and skin from small game like rabbit or quail. It can also be used to cut pieces of chicken, especially the more delicate breasts. A fillet knife can also be used to slice red meat into very thin slices, instead of using a meat slicer.

In addition to meat, a fillet knife is great for cutting decorative vegetables. The sharp and flexible blade is perfect for cutting elaborate designs into carrots, tomatoes and radishes. Cutting vegetables into a rosette shape is much easier with a good fillet knife.

Citrus fruit, such as oranges, lemons and grapefruit, can also be cut using a fillet knife. With the flexible blade, it’s easy to segment the fruit, and remove the pith and the rind. Peeling fruits that have a very thin skin, such as mangoes and tomatoes, is also much more efficient with a sharp fillet knife.

The Fillet Knife Tips and Advice

  • One of the most important elements to look for when selecting a good fillet knife is the material the knife is made out of. You want to ensure that the blade will be strong, yet forgiving. A fillet knife blade needs to be flexible but firm at the same time, allowing you to make expert cuts and remove the flesh of the fish. Some knives are made out of an incredibly razor-sharp imported high-carbon German steel and feature a hand polished edge at 14-16 degrees per side. This makes the knife highly flexible and  maneuverable. Other knives are forged from a single block of high carbon stainless steel. They are then tempered to 58-degree HRC. Their blades are long and narrow, so that they are easy to move it along the backbone of the fish and remove the scales. The KastKing 9-in Fillet Knife is comprised of premium, razor-sharp G4116 German stainless steel. The blades are curved and have the right flexibility to cut around the natural shape of fish.
  • Just as important as the blade is the handle. After all, it doesn’t matter how flexible or sharp the blade is if the handle of the knife is difficult to hold. You want to ensure the handle provides the perfect grip for your hand, so that the blade is easy to control and maneuver. Look for a knife that has a luxury imported black pakkawood handle. These handles are triple-riveted, so that they provide a strong grip with comfort. You also want the knife to have an ergonomic handle. The KastKing 9-in Fillet Knife has a comfortable and slip-resistant handle, with polymer grips. It is designed to ensure you always have a solid grip on the knife.
  • When you have such a sharp tool in the kitchen, it’s important to keep safety in mind, especially for storage. Opt for a knife that has a protective sheath. This not only keeps the blade safe while it’s not in use, it also ensures that you don’t accidentally cut your fingers while the knife is not in use. The KastKing 9-in Fillet Knife comes with a durable and lightweight sheath, designed to lock the handle for safety. The sheath has open slots that enable any water on the knife to drain, ensuring the knife stays dry and sharp.

About The Author

Avatar
Anam Ahmed 

Anam Ahmed is a professional copywriter and essayist based in Toronto. She has been writing on technology, travel, parenting, and business for over 10 years, and works with a number of high-profile organizations. As an avid home cook who loves making magic in the kitchen, she values finding the best products to make people's lives easier. Anam earned a master's degree from the University of Toronto and a bachelor's degree from Queen's University.