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Two sewing & crafts tools, side-by-side. See which fits your task.
Sewing & Crafts
Reference for crochet hook size conversion between US, UK, and metric systems.
Open Hook SizesSewing & Crafts
Reference for interfacing types: fusible, sew-in, woven, and non-woven by weight.
Open InterfacingYour specific task is reference for crochet hook size conversion between us, uk, and metric systems. Open the page, drop your input, get the result — typically under a second.
Your goal is reference for interfacing types: fusible, sew-in, woven, and non-woven by weight. Same approach: paste in, get the result, move on. No account, no upload.
Both tools live in the same category, so the choice depends on the exact subtask. Hook Sizes focuses on reference for crochet hook size conversion between us, uk, and metric systems; Interfacing focuses on reference for interfacing types: fusible, sew-in, woven, and non-woven by weight. Try whichever description matches your goal more closely — they're both free.
Yes — both tools are free for unlimited personal use. The Pro plan unlocks higher limits and batch features but the core functionality stays free forever.
Absolutely. Many users chain multiple tools together — process a file with one, then feed the result into another. Nothing is uploaded, so chaining is essentially instant.
No. Both Hook Sizes and Interfacing work without signup. We only ask for an email if you decide to subscribe to a paid plan.