Yarn & Hook Reference Charts
Quick-reference conversion tools for yarn weight, hook and needle sizing, and thread colors, so you don’t need to keep a physical chart on hand.
Hook and needle sizing is genuinely confusing across regions — US, UK, and metric systems don't line up in a simple, predictable order, and letter/number labels vary by manufacturer. This category collects reference tools that convert between sizing systems, check an unlabeled needle's actual size, and look up standard yarn weight and thread color information without needing a printed chart.
For the full breakdown of yarn weight categories and how to identify unlabeled yarn, see the yarn weight guide.
These reference tools are built for quick lookups rather than long calculations — check a needle's actual size, confirm a hook conversion between US and metric, or find a DMC floss number's closest match. Keeping these bookmarked saves digging through a printed conversion chart or guessing at an unlabeled tool's size.