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.
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.
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
||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
||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
||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
|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
|Top open zipper||From the top stop to the tip of the box||From the top stop to the cut end
|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
|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
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.
|Fabric Type||Weight Range||Recommended Teeth width range|