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Razor and utility blade sizes: double-edge 43 × 22.2 × 0.1 mm, utility 61 × 19 × 0.65 mm

What size is a double-edge razor blade? · Standard part · basis: Lab-supply listing for double-edge blades; tool-maker and retailer listings for trapezoid utility blades

Also called: safety razor blade size, double edge blade dimensions, utility knife blade size, box cutter blade dimensions, razor blade bank

Exact dimensions. True size, with no printing tolerance added.

sizes
3 in table

Notes

  • Double-edge (safety razor) blades: 43 × 22.2 mm, 0.10 mm thick, carbon or stainless steel; the centre slot pattern is not published, so holders should clamp by the edges or use the razor's own posts.
  • Trapezoid utility (box-cutter) blades: 61 mm long, 18.7–19 mm wide, 0.65 mm thick; end angle and the two back notches are not published (they vary little; measure one).
  • Cartridge razors (Gillette, Schick, Harry's...) are brand-specific: a measured Xem scan is planned on request.
  • Blade banks (free STL): slot sized for each blade; print PETG, close the box with the last layer and recycle it full as sharps.

Razor and utility blade sizes: double-edge 43 × 22.2 × 0.1 mm… size chart

bladelength (mm)width (mm)thickness (mm)
double-edge safety razor43.022.20.1
trapezoid utility blade (Tecwerk)61.018.70.65
trapezoid utility blade (Screwfix listing)61.019.0None

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Electron Microscopy SciencesBreakable double-edge razor blades (43 × 22.2 × 0.10 mm)webPublisher's page; dimensions are facts
Nordwest TecwerkTrapezoid blade 61 × 18.7 × 0.65 mmwebPublisher's page; dimensions are facts
ScrewfixStraight utility knife blade 61 × 19 mmwebPublisher's page; dimensions are facts

Free files

★ Free files 4 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

de-blade-envelope-43x22.2x0.1Double-edge blade envelope 43 × 22.2 × 0.10 mm (centre slot not modelled)STEP · STL
utility-blade-envelope-61x18.7x0.65Trapezoid utility blade bounding box 61 × 18.7 × 0.65 mm (ends and notches not modelled)STEP · STL
blade-bank-deUsed-blade bank with a 46 × 1.2 mm slot for double-edge bladesSTEP · STL
blade-bank-utilityUsed-blade bank with a 64 × 1.4 mm slot for utility bladesSTEP · STL
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Plain text: sheet.txt · JSON: /api/geometry?object=razor-and-utility-blades

Razor and utility blade sizes: double-edge 43 × 22.2 × 0.1 mm, utility 61 × 19 × 0.65 mm, isometric render of a generated part
Render of blade-bank-de from the free STEP; not to scale.

Fits with

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Pot and pan lid sizes: how cookware is measured, lid knob M5 screw, replacement knob STL5 sizes★ 2 files
Pegboard hole size and spacing: 1/4 in holes on 1 in centers (and 3/16 in), panel sizes, hook wire, isometric render of a generated part
Pegboard hole size and spacing: 1/4 in holes on 1 in centers (and 3/16 in), panel sizes, hook wire7 sizes★ 5 files

Questions

How big is a safety razor blade?

43 × 22.2 mm, 0.10 mm thick.

How big is a utility knife blade?

61 mm long, about 19 mm wide, 0.65 mm thick.