HomeHelpful InformationMEASURING WRAPS PER INCH GUIDE MEASURING WRAPS PER INCH GUIDEHelpful Information, Yarn Fingering Weight: 19-22 WPI Sport Weight: 15-18 WPI DK Weight: 12-14 WPI Worsted Weight: 9-11 WPI Heavy Worsted Weight: 9-11 WPI Bulky Weight: