Zippers are always measured from "component to component" (end stops), regardless of zipper style. The illustrations below will assist you in determining the proper method for arriving at the desired zipper length.


In this page

  1. Zipper Size
  2. How to Measure a Zipper?
  3. Zipper Teeth/Element width usage according to fabric weight

Zipper Size

Zipper Size: Zipper size is the double chain width of the zipper and is measured in millimeters. Most of the manufacturers have assigned codes to designate the elements or teeth width for example #2 is 3.90-4.05mm. These codes are typically available in #2 to #10 range.

 

Type #2 #3 #4 #5 #8 #10
Nylon 3mm 3mm 4mm 6mm 7mm 10mm
Plastic 3mm 4mm 4.5mm 5mm 7mm 8mm
Metal 3.1mm 4mm 5mm 6mm 7mm 8mm



How to Measure a Zipper?

Important Note- The zipper must be completely closed when taking measurements.

Classifications Dimensions (A) Dimensions of Top Tape Extensions (B) Dimensions of Bottom Tape Extensions (C)
Closed-end zipper From the top end of the slider to the tip of the bottom stop From the top stop to the tip of notches of the cut end
Zipper1
From the top stop to the to the tip of notches of the cut end
Zipper with double sliders (arranged in head to head relation) From the tip of one bottom stop to the tip of the other bottom stop From the upper bottom stop to the tip of notches of the cut end
Zipper2
From the tip of the bottom stop to the tip of notches of the cut end
Zipper with double sliders (arranged in bottom-to- bottom relation) From the top end of one slider to the top end of the other slider From the top stop to the tip of notches of the cut end
Zipper3
Same as the top tape extention end portion
Open-end zipper From the top end of the slider to the tip of the box From the top stop to the cut end
Zipper4
Two way separator From the top From the top end of the slider to the bottom end of the supplementary tape From the top stop to the cut end
Zipper5
Top open zipper From the top stop to the tip of the box From the top stop to the cut end
Zipper6
Reversible slider Rather than from the top end, measurement should be made from the shoulder inlet portion of the slider From the top stop to the cut end
Zipper7
When the top stop does not enter the slider Measurement should be made from the top stop From the top stop to the tip of notches of the cut end
Ziper8

Zipper Teeth/Element width usage according to fabric weight

Zipper selection depends on type of garment and also the fabric weight being used for the particular garment. Zipper selection is based on zipper teeth or Element width as below. This is a recommendation only and not a standard.

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Fabric Type Weight Range Recommended Teeth width range
Ultra weight 85-120gsm 2.5-4.0mm
Light weight 120-160gsm 4.0-5.5mm
Medium weight 160-240gsm 5.5-7.0mm
Medium-Heavy weight 240-320gsm 7.0-8.5mm
Heavy weight 320-410gsm 8.5-12.0mm

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