Crochet reference
Crochet Hook Size Chart
Use this crochet hook size chart to compare US and metric hook sizes and support beginner tutorials and pattern pages.
Photo: Pexels
Quick answer
Use the hook size chart to confirm both the metric size and the project goal. The same labeled hook can behave differently depending on yarn, tension, and whether the pattern needs drape or structure.
This is one of the most important evergreen pages on the site. It supports beginner stitches, flower patterns, and future tools like hook converters or project calculators.
What the table is actually for
Most readers do not need a hook chart because they forgot a number. They need it because they are trying to decide whether the hook in hand matches the fabric they want. That is the more useful way to read the table.
What this page adds
- It explains how to use the chart for decision-making, not just as a lookup table.
- It keeps the US, metric, and project-use perspective together so beginners understand why size matters.
- It turns a reference page into an internal-link center for stitches, hats, and flowers.
Main hook size chart
| US Size | Metric | Common Use |
|---|---|---|
| B-1 | 2.25 mm | Fine yarn and delicate motifs |
| E-4 | 3.5 mm | Light accessories and detail work |
| G-6 | 4.0 mm | Flowers, motifs, and lighter patterns |
| H-8 | 5.0 mm | Beginner hats, swatches, and general practice |
| I-9 | 5.5 mm | Soft beginner fabrics and fast projects |
How to choose a hook
| Situation | What to Check | Why it Matters |
|---|---|---|
| Stitches feel tight | Try a slightly larger hook | Helps loops move more comfortably |
| Fabric feels loose | Try a smaller hook | Improves stitch definition |
| Pattern uses UK terms | Confirm terminology and metric size | Avoids size confusion |
Printable chart section
Reserved for a future clean-print version so readers can save or print this reference chart.
Watch alongside this page
Crochet hook sizes explained
Channel: Bella Coco Crochet. The video helps visually, while this page organizes the information into a reusable chart and project-based checks.
Why keep a crochet hook size chart nearby?
It helps you move between tutorials, patterns, and yarn labels without second-guessing hook choices.
Do US and UK hook names always match?
Not always, which is why metric sizing is the safest cross-check.
Will one hook size work for every project?
No. Fiber, tension, and the project goal all influence the best hook choice.
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Author
Clara Bennett
Crochet editor and beginner pattern writer
Clara focuses on US-term crochet tutorials, clean teaching sequences, and practical pattern notes for newer makers.
Learn more