Bag Sizer is a free nonwoven bag sizing calculator built for manufacturers, converters, and procurement teams who need fast, reliable specifications for nonwoven shopping and packaging bags. Whether you produce D-Cut bags, box bags with sewn loop handles, or W-Cut grocery bags, Bag Sizer turns a few dimensions into the exact numbers production needs: roll length in inches and centimeters, individual bag weight in grams, bags per kilogram, and total yield including wastage.
The calculator runs entirely in your browser. Enter the bag width, height, gusset, and GSM, and Bag Sizer instantly applies the standard nonwoven sizing formulas — flat-style math for D-Cut and box bags, W-Cut math for shopping bags — so your roll-cutting and material estimates stay consistent every time. A visual bag layout shows width, height, and gusset at a glance, and a roll-length composition strip breaks down exactly how the roll length is built from each component.
Bag Sizer is built by Unique Solutions International, a spunbond nonwoven fabric manufacturer based in Sohar Industrial Estate, Oman, producing 20+ tons of nonwoven fabric per day for customers across the GCC and beyond. We built this tool to help bag converters and brands quote accurately, reduce fabric waste, and plan production with confidence. If you need help finalizing a specification, our Quote Advisor can walk you through it and produce a ready-to-use production quote summary.