Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
Advertising Disclosure
10 Best 18mm utility knives blades of 2026
Save up to 21% off
Best Choice1
BerklingBerkling 18mm Utility Knife Blades, 50 PCS | SK2H Blackened Steel | 3x Sharper & 5x More Durable Than SK5 | Fits All 18mm Utility Knives & Box Cutters
9.8Exceptional
-
-
Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you
Careful review Our team ensures quality, value, and fit based on real user feedback
Trusted insights AI and human analysis guide your decisions, reflecting real user prioritiesReal users impact
Thousands of users trust our site daily
- Based on millions of stores and reviews
- Shoppers influence our rankings
Analyzing top stores
Value for Money2
WORKPROWORKPRO 18mm Snap-off Blades, SK5 Steel Replacement Blade Fits all 18mm Utility Knife & Box Cutter, Pack of 100
21% Off9.6Exceptional
Our Rating
-
3
DOWELLDOWELL 18mm Snap Off Blades SK5 Utility Knife Retractable Blades Box Cutter (30pcs)
9.4Excellent
-
4
DOWELLDOWELL 18mm Snap Off Blade SK5 Utility Knife Retractable Blades Box Cutter Blades (100pc)
9.3Excellent
-
5
EFFEKTWERKE•Werk - Box Cutter Blade Set - Black, 60 Pack - 18mm Utility Knife Replacement Blades - Heavy Duty Carbon Steel Snap Off Blades - Blade Refills for Utility Knives & Box Cutters
9.0Excellent
-
-
See Today’s Deals & Prices
6
HAUTMECHAUTMEC 10PCS 18mm Triple Cutting-edge Snap Off Blades, Retractable Black Replacement Blades, SK2 Heavy Duty Utility Knife Blades, Strengthened Safety Box, for Box, Carpet, Rope HT0083-BL
8.8Very Good
-
7
Edward ToolsEdward Tools Utility Knife/Box Cutter Snap Off Blades - Pack of 10-18mm - Razor Sharp SK5 Steel - Plastic Organizer Case
Key specs-
blade material:SK5 Steel
-
blade length:18mm
-
style:Snap Off
-
handle material:Plastic, Steel
-
power source:N/A
8.7Very Good
Our Rating
-
8
HIEMTEHIEMTE 30Pcs 18mm Utility Knife Replacement Snap off Blades 60 Degree，Blades for Utility Knife and 18mm Box Cutter - Razor Sharp SK4 Steel
8.6Very Good
-
9
HEIKIOHEIKIO 18mm Snap-off Blades, 50-Pack, Quality Black Carbon Steel Made, Sharp and Durable, Heavy-duty Replacement Blade for 18mm Box Cutter and Utility Knife
14% Off8.5Good
-
10
ZoidZoid 18mm Snap Knife Refill 10 Pack, Sharp Carbon Steel Snap Blades for Home & Project Cutting, Blades for Box Cutter, Utility Knife, Storage Case Included
20% Off8.4Good
-
