Zipper Length Calculator

Calculate the right zipper length for your garment based on opening length and garment type.

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How It Works

Zippers come in standard lengths. The zipper should be at least as long as your opening. For dresses and skirts, invisible zippers give the cleanest finish. Separating zippers are used for jackets and hoodies. You can always shorten a longer zipper by stitching across the teeth at the desired length.