Basic Dimensions of a safety Double edge razor

What are the basic width and length of a safety razor blade? There are zero answers that i have found on the internet for this.

Measuring a Gillette Silver Blue with an inexpensive dial caliper I get,

1 11/16" (42.84mm) long

7/8" (22.26mm) wide

Holding the blade up against others reveals no variance in any dimensions between several makes. They could have all come off the same production line.

Short answer:
DE blades are ~43mm long and ~22mm wide


Longer answer:

As one reference, the Bureau of Indian Standards has defined the specification for Safety Razor Blades under IS 7371:1982
illustration: http://www.inspiremanufacturing.com/wp-content/uploads/2014/12/Razor-Blade.jpg
source: http://www.inspiremanufacturing.com/?page_id=1501

• The safety razor blades are classified under 3 categories based upon their thickness:
  [*=1]Thick: 0.127 (+/- 0.007) mm
  [*=1]Medium thickness: 0.100 (+/- 0.005) mm
  [*=1]Thin: – 0.080 (+/- 0.005) mm
• Min/Max Width: 21.9mm to 22.04mm
• Min/Max Length: 36.82mm to 37.28mm (NOTE: this is the length of cutting edge, not from blade tab to blade tab)

From calipers, microscope comparisons, and photos, they might vary by as much as 0.25mm between manufacturers:

• width chart lists widest (22.10mm) and thinnest (21.85mm)
  • chart: http://a.imageshack.us/img834/1903/bladedatasm.jpg
  • source thread: http://badgerandblade.com/vb/showthread.php/164368-Blade-dimensions-and-observations
• rough photo analysis seems to confirm the above, with a possible addition that some brands may have curved (convex or concave) cutting edges:
  http://badgerandblade.com/vb/showthread.php/439161-Photo-Analysis-of-8-Brands-of-Razor-Blades

Hello Jayce. Welcome to B&B. Great to have you here. Wander on over to the Hall of Fame and introduce yourself.

Jayce said:

What are the basic width and length of a safety razor blade? There are zero answers that i have found on the internet for this.

Click to expand...

Thank you all for the quick reply.