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Best 18mm Utility Knife

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When you think of a utility knife, you probably think of a cheap, disposable tool that you grab when you’re working on a quick DIY project. But a good utility knife can be a go-to tool for a wide range of DIY projects and work tasks. And if your go-to tool is a cheapie, it’s time to upgrade.

To help you find the best utility knife for you, we’ve do the research for you and turned to reviews from real customers on Amazon who have purchased and used these tools for themselves.

Here are the best 18mm utility knives on the market.

# Preview Product Price
1 FEENIX 22050 30-Pack 18MM Utility Knife Replacement Blades, Snap off Replacement Knife Blades for Retractable Box Cutters and Knives, Hobby, Craft Knife - Bulk pack of 30 Blades FEENIX 22050 30-Pack 18MM Utility Knife Replacement Blades, Snap off Replacement Knife Blades for Retractable Box Cutters and Knives, Hobby, Craft Knife – Bulk pack of 30 Blades $6.99 Buy on Amazon
2 Fiskars 770210-1001 Pro Utility Knife, Snap 18 mm, Orange/Black Fiskars 770210-1001 Pro Utility Knife, Snap 18 mm, Orange/Black $21.46 Buy on Amazon
3 Edward Tools Utility Knife Snap Off Blades 18mm Pack of 10 - Blades for Utility Knife and 18mm Box Cutter - Razor Sharp SK5 Steel Blades - Plastic Organizer Case (10) Edward Tools Utility Knife Snap Off Blades 18mm Pack of 10 – Blades for Utility Knife and 18mm Box Cutter – Razor Sharp SK5 Steel Blades – Plastic Organizer Case (10) $4.95 Buy on Amazon
4 DEWALT Utility Knife, Single Blade, Snap-Off, 18mm (DWHT10038) DEWALT Utility Knife, Single Blade, Snap-Off, 18mm (DWHT10038) $19.99 Buy on Amazon
5 OLFA 18mm Heavy-Duty Utility Knife (L-1) - Multi-Purpose Custom Cutting Depth Utility Knife w/ Ergonomic Grip Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade OLFA 18mm Heavy-Duty Utility Knife (L-1) – Multi-Purpose Custom Cutting Depth Utility Knife w/ Ergonomic Grip Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade $10.10 Buy on Amazon
6 FantastiCAR Soft Material Grip Retractable Utility Knife, Snap-off Safety Box Cutter, with Extra 10 Blades (18mm) , and Can Opener Design, for Heavy Duty Work, Carpet, Cartons and Cardboard (Black) FantastiCAR Soft Material Grip Retractable Utility Knife, Snap-off Safety Box Cutter, with Extra 10 Blades (18mm) , and Can Opener Design, for Heavy Duty Work, Carpet, Cartons and Cardboard (Black) $7.99 Buy on Amazon
7 TIFICAL Box Cutter, Utility Knife with Snap-Off 18mm Blades, Box Cutter Retractable with Soft Grip Ergonomic Handle, Box Cutters Exacto Knife Package Opener for Home, Office, School Use TIFICAL Box Cutter, Utility Knife with Snap-Off 18mm Blades, Box Cutter Retractable with Soft Grip Ergonomic Handle, Box Cutters Exacto Knife Package Opener for Home, Office, School Use $4.49 Buy on Amazon
8 DOWELL 18mm Snap Off Blades SK5 Utility Knife Retractable Blades Box Cutter Blades (100pc) DOWELL 18mm Snap Off Blades SK5 Utility Knife Retractable Blades Box Cutter Blades (100pc) $11.99 Buy on Amazon
9 OLFA 18mm Heavy-Duty Snap Off Replacement Blades, 10 Blades (80 segments) LB-10B - Snap-Off Utility Knife Replacement Blades, Fits most 18mm Utility Knives OLFA 18mm Heavy-Duty Snap Off Replacement Blades, 10 Blades (80 segments) LB-10B – Snap-Off Utility Knife Replacement Blades, Fits most 18mm Utility Knives $10.99 Buy on Amazon
10 Amartisan 14-Piece Retractable Box Cutter, Utility Knifes for Boxes, Cartons, Cardboard Cutting, 18mm & 9mm Wide Blade Cutter, Very Suitable for Office and Home Use. Amartisan 14-Piece Retractable Box Cutter, Utility Knifes for Boxes, Cartons, Cardboard Cutting, 18mm & 9mm Wide Blade Cutter, Very Suitable for Office and Home Use. $8.99 Buy on Amazon

Table of Contents

Our Editor’s Best 18mm Utility Knife Reviews

FEENIX 22050 30-Pack 18MM Utility Knife Replacement Blades, Snap off Replacement Knife Blades for Retractable Box Cutters and Knives, Hobby, Craft Knife – Bulk pack of 30 Blades

FEENIX 22050 30-Pack 18MM Utility Knife Replacement Blades, Snap off Replacement Knife Blades for Retractable Box Cutters and Knives, Hobby, Craft Knife - Bulk pack of 30 Blades

Key Features:

  • This is a 18mm utility knife with very sharp snap off blades. It can be used for box cutting, crafts, paper cutting and more.

  • This knife is ideal for general purpose cutting and trimming. The blades are made of high-quality steel for durability and sharpness. The knife has a comfortable grip and comes with three separate dispenser packs of 10 blades each, for a total of 30 blades.

  • The 18mm utility knife is a great tool for any shopper. It has a pre-cut section of 8 sharp points per blade that snap-off easily for continual use.

  • This is a utility knife that is 4-1/2″ in length and 18MM in height.

  • This 18mm utility knife is perfect for the home, office, work, warehouse, garage, and many other projects. It is made of high quality materials and is very durable. It is also very easy to use and comes with a safety blade guard.

$6.99 Buy on Amazon

Fiskars 770210-1001 Pro Utility Knife, Snap 18 mm, Orange/Black

Fiskars 770210-1001 Pro Utility Knife, Snap 18 mm, Orange/Black

Key Features:

  • The utility knife has a snap-off blade that is easy to change.

  • The 18mm utility knife has an integrated segment snapper that safely snaps and automatically captures used blades.

  • This 18mm utility knife is reinforced with metal at the end to provide resistance against pounding and drops.

  • This 18mm utility knife includes one CarbonMax snap-off utility blade that is designed to last up to 24 times longer than similar blades from other brands. The knife also accepts 18 mm snap-off utility blades, making it a versatile tool for a variety of tasks.

  • The 18mm utility knife is a knife that can be used for a variety of purposes. It is made of high quality materials and is designed to last a lifetime.

$21.46 Buy on Amazon

Edward Tools Utility Knife Snap Off Blades 18mm Pack of 10 – Blades for Utility Knife and 18mm Box Cutter – Razor Sharp SK5 Steel Blades – Plastic Organizer Case (10)

Edward Tools Utility Knife Snap Off Blades 18mm Pack of 10 - Blades for Utility Knife and 18mm Box Cutter - Razor Sharp SK5 Steel Blades - Plastic Organizer Case (10)

Key Features:

  • This utility knife has heavy duty, razor sharp SK5 steel blades. It is 18mm wide and can be used for a variety of tasks.

  • This utility knife has 18mm wide snap off blades.

  • The 18mm utility knife is a great tool for opening boxes and cutting through materials. It is made of high-quality steel and has a comfortable grip.

  • This 18mm utility knife has a snap off design to ensure that you are always using a sharp blade.

  • The 18mm utility knife is a great tool for anyone who needs a sharp blade. The satisfaction guarantee means that if you have any issues with the knife, you can contact the company and they will send you replacements.

$4.95 Buy on Amazon

DEWALT Utility Knife, Single Blade, Snap-Off, 18mm (DWHT10038)

DEWALT Utility Knife, Single Blade, Snap-Off, 18mm (DWHT10038)

Key Features:

  • This is a small, lightweight utility knife that is great for everyday tasks. The blade is made of high-quality stainless steel and is 18mm long. The handle is comfortable to hold and has a finger guard for safety. The blade can be locked into place for storage.

  • This is a 18mm utility knife with a snap off blade. It is made by DW and is silver in color.

  • This is a utility knife with a snap-off blade that is 18mm wide.

  • The DW KNVE SNAP SB 18MM is a utility knife that is 18mm in size. It is made of durable stainless steel and has a comfortable grip. It is perfect for a variety of tasks such as opening boxes, cutting rope, and more.

  • The DW KNVE SNAP SB 18MM is a utility knife that is ideal for a shopper. It is made of high quality stainless steel and features a snap-off blade for easy and precise cutting.

$19.99 Buy on Amazon

OLFA 18mm Heavy-Duty Utility Knife (L-1) – Multi-Purpose Custom Cutting Depth Utility Knife w/ Ergonomic Grip Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade

OLFA 18mm Heavy-Duty Utility Knife (L-1) - Multi-Purpose Custom Cutting Depth Utility Knife w/ Ergonomic Grip Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade

Key Features:

  • The RAZOR SHARP 18mm BLADE is a preloaded with LB Heavy-Duty Silver Snap Blade made from Japanese tool steel for unmatched sharpness and edge retention. The 18mm blade has 8 razor-sharp snap-off segments, great for industrial or construction applications.

  • The 18mm utility knife has a sturdy handle made from high-impact ABS plastic, which provides extra leverage for tough cutting projects. The stainless-steel channel keeps the blade firmly in place for safe operation. There is also a keychain/lanyard hole for tethering.

  • This 18mm utility knife has a ratchet-based locking system that provides custom cutting depths. The blade slider has a wheel locking mechanism for unlimited positions when securing the blade in place.

  • The OLFA 18mm L-1 Utility Knife is a versatile tool that can handle a variety of tough cutting projects. It is made of durable materials and has a comfortable grip, making it easy to use.

  • This OLFA 18mm Utility Knife is a great choice for a shopper looking for a quality, durable knife. The original inventor of the Snap-Off Knife, OLFA has maintained a standard of cutting excellence for our quality and durability.

$10.10 Buy on Amazon

FantastiCAR Soft Material Grip Retractable Utility Knife, Snap-off Safety Box Cutter, with Extra 10 Blades (18mm) , and Can Opener Design, for Heavy Duty Work, Carpet, Cartons and Cardboard (Black)

FantastiCAR Soft Material Grip Retractable Utility Knife, Snap-off Safety Box Cutter, with Extra 10 Blades (18mm) , and Can Opener Design, for Heavy Duty Work, Carpet, Cartons and Cardboard (Black)

Key Features:

  • This 18mm utility knife is perfect for a shopper who needs a durable knife that will last long and always offer a sharp edge. The extra 10 pcs of blades is also a great feature, as it means that the shopper will never have to worry about running out of blades.

  • This utility knife is 18mm and is made to be both functional and well made. It has a safety knife push for safe frequent use and a self-loading bottom. There is also a metal pick on the top for opening paint cans, removing switch plates or tucking carpets.

  • The knife has a simple blade-changing system that does not require any tools. You can either snap off the front end of the dulled blade or replace the entire blade from the end cap.

  • This 18mm utility knife has an ergonomic soft knife body with silicon coverings and slight ridge cuts. It provides a secure grip when handling the knife.

  • This knife is good for cutting paper, cardboard, wallpaper, card stock, vinyl, film, shrink-wrap, carpet, and more. It has a triple cutting ground edge with laser hardening tech of cutting edge, making it extra sharp and durable.

$7.99 Buy on Amazon

TIFICAL Box Cutter, Utility Knife with Snap-Off 18mm Blades, Box Cutter Retractable with Soft Grip Ergonomic Handle, Box Cutters Exacto Knife Package Opener for Home, Office, School Use

TIFICAL Box Cutter, Utility Knife with Snap-Off 18mm Blades, Box Cutter Retractable with Soft Grip Ergonomic Handle, Box Cutters Exacto Knife Package Opener for Home, Office, School Use

Key Features:

  • The 18mm utility knife is a box cutter with a retractable blade that is made of high-quality steel. It is easy to use and can be used to cut cardboard, boxes, leather, rope, cloth, plastic, PVC, etc.

  • This is a utility knife with a quick-change blades mechanism. You can push the box cutter blades to the top to remove the blade, and then push the slider back to the bottom to replace the blade. The knife is convenient and quick to use, and will not cut your hands.

  • This 18mm utility knife has a soft, comfortable handle made of rubber and PP material, and a non-slip design for easy, long-term cutting.

  • The 18mm utility knife comes with 3 breakable blades and has a blade storage space in the handle for easy replacement of blades.

  • This box cutter is made of high-quality materials and is designed for durability. It is 18mm in size and has a utility knife blade. It is perfect for cutting boxes and other materials.

$4.49 Buy on Amazon

DOWELL 18mm Snap Off Blades SK5 Utility Knife Retractable Blades Box Cutter Blades (100pc)

DOWELL 18mm Snap Off Blades SK5 Utility Knife Retractable Blades Box Cutter Blades (100pc)

Key Features:

  • The 18mm utility knife is a great tool for any shopper. It is made of high quality steel and is very sharp. It is perfect for cutting through tough materials, such as cardboard or plastic.

  • The 18mm utility knife is a great choice for shoppers who are looking for a knife that is both sharp and durable. The SK-5 blades are perfect for those who need a knife that can handle a variety of tasks, and the knife’s durability ensures that it will last for many years to come.

  • The 18mm utility knife is a knife that is designed to fit most 18mm snap-off blade knives. This knife is perfect for those who need a knife that can be used for various purposes, such as cutting, slicing, and more.

  • This 18mm utility knife is perfect for cutting paper, wallpaper, cardboard, film, shrink-wrap, vinyl, and more. It’s a great tool for any household or office.

$11.99 Buy on Amazon

OLFA 18mm Heavy-Duty Snap Off Replacement Blades, 10 Blades (80 segments) LB-10B – Snap-Off Utility Knife Replacement Blades, Fits most 18mm Utility Knives

OLFA 18mm Heavy-Duty Snap Off Replacement Blades, 10 Blades (80 segments) LB-10B - Snap-Off Utility Knife Replacement Blades, Fits most 18mm Utility Knives

Key Features:

  • This 18mm utility knife has razor sharp blades made from Japanese tool grade steel for unparalleled sharpness and superior edge retention. The long lasting precision of these blades allows you to work longer uninterrupted.

  • The 18mm utility knife is a great tool for any shopper. It contains 10 blades, each with 8 razor-sharp LB Heavy-Duty Silver Snap-Off segments (80 segments total). Simply snap for a new sharp blade edge.

  • The 18mm utility knife is a versatile tool that can be used for a variety of tasks. It is compatible with most 18mm knives, and the replacement blade is available in quantities of 5, 10, 50, or 100.

  • This utility knife has a blade that is 18mm wide and can be used to cut through a variety of materials including drywall, roofing, flooring, rubber, and more. This knife is great for industrial use, contractors or construction, and other heavyweight jobs.

  • This is an 18mm utility knife from OLFA, a company that specializes in cutting tools. The knife has a snap-off blade that can be replaced when it gets dull.

$10.99 Buy on Amazon

Amartisan 14-Piece Retractable Box Cutter, Utility Knifes for Boxes, Cartons, Cardboard Cutting, 18mm & 9mm Wide Blade Cutter, Very Suitable for Office and Home Use.

Amartisan 14-Piece Retractable Box Cutter, Utility Knifes for Boxes, Cartons, Cardboard Cutting, 18mm & 9mm Wide Blade Cutter, Very Suitable for Office and Home Use.

Key Features:

  • This utility knife is great for those who are looking for an economical and practical option. With 14 sharp utility knives included in one box, this is a great way to get all the knives you need in one purchase.

  • The 18mm utility knife is a great tool for anyone who needs to do some light cutting. The knife is beautiful and light, and it is comfortable to hold. The blade is retractable, and the knife body has a safety locking design that can safely lock the blade in the required position.

  • This 18mm utility knife is great for shoppers who need a durable and sharp blade. The knife is composed of 8 tip durable blades, which can complete most cutting tasks.

  • The 18mm utility knife has a wide blade that is perfect for cutting through paper, plastic, cardboard, and fabric. The knife is also great for cutting through foam board, tape, and crafts.

  • This utility knife is 18mm wide and is suitable for a variety of applications including DIY, design, office work, and warehouse use.

$8.99 Buy on Amazon

Best 18mm Utility Knife Buying Guide

Before choosing the best 18mm utility knife you should consider following options:

1. Single-bladed or double-bladed: The choice here is yours. Single-bladed knives are cheaper and are easier to maneuver. On the other hand, double-bladed knives are safer and are good for heavy-duty work.

2. Standard or retractable: Standard knives will have caps that fit over the blades and need to be stored in a safe place when not in use. On the other hand, retractable knives will have caps that are attached to the body of the knife for easy storage.

3. Lock type: The lock type you choose will depend on your needs. Knives with interlocking caps are best for household use.

On the other hand, knives with stopper bars are best for heavy-duty jobs. You can also look for knives with a dual lock system which has both a stopper bar and an interlocking cap.

4. Number of uses: If you want a knife that can be used in several different capacities, then you should opt for a retractable knife with interchangeable caps.

If you want a knife that will be used for office work and light jobs, then choose a retractable knife with a cap. If you want a knife that will be used for heavy-duty jobs, then choose a utility knife with a stop bar.

5. Number of blades: Some utility knives will have a standard blade while some will have two or more blades. The number of blades you choose will depend on your needs.

If you want to cut materials such as cardboard or plastic, then look for a utility knife that has a second blade for that purpose. If you want to cut thick materials such as sheet metal or carpet, then look for a knife with two or more blades.

6. Size and design: The size and design of the utility knife you choose will depend on your needs. If you want a knife to be used in a job site, then you should look for a heavy-duty knife with a large body to provide a firm grip.

On the other hand, if you want a knife that will be used in an office environment, then you can opt for a thinner and lighter model.

You can also look for a knife that has a retractable blade for easy storage or one that has a locking mechanism for added safety.

7. Cost: Utility knives come in a wide range of price points, depending on their features. You can find standard and retractable knives for as low as $20 up to as much as $50.

8. Warranty: Always check the warranty period before you buy a utility knife. Look for a knife that has a strong frame and a locking mechanism to avoid accidental cuts.

9. Customer service: Always look for a company that has excellent customer service. This will make things easier in case you have any questions or issues with your purchase.

10.Reputation: Go through reviews of different utility knife manufacturers to get an idea of what to expect from them. You will get an idea of the quality and features of their products.

Conclusion

To sum up, we took into consideration the types, features, and benefits of each utility knife and picked the ones that we think are the best in the market.

With the information you have read and the reviews you can read for each product, you should have a good idea of which product to choose.

Our top pick is the Bostitch STKL049A Blumax Utility Knife. This product has a retractable blade which

18mm Utility Knife FAQs

1) What are the dimensions of the 18mm utility knife?

The dimensions of the mm utility knife are 4.5 inches long and 2.9 inches wide.

2) What is the blade made of?

The blade is made of carbon steel.

3) How is the blade attached to the handle?

The blade is attached to the handle with a screw.

4) How do you change the blade on the 18mm utility knife?

The blade on the mm utility knife can be changed by unscrewing the blade guard and removing the old blade. The new blade can then be inserted and the blade guard can be screwed back on.

5) What are some of the most common uses for the 18mm utility knife?

Some of the most common uses for the mm utility knife are to cut paper, cardboard, and thin plastic.

Conclusion

There are many great 18mm utility knife on the market. Our list of the best 18mm utility knife will help you save time researching and choosing the best one for you.

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