Crochet Hook Size Converter – Online US, UK, Metric, JP
Enter a hook size in any system and instantly see the equivalent in all other standards.
UD5 Toolkit
Instantly find the perfect hoop size for your embroidery project — from patches to jacket backs
Quick Select Project Type:
Margin = extra space around design for secure hooping
Your Design: 4.0" × 4.0"
Design Diagonal: 5.66"
Needed Clearance: 6.66"
Perfect fit in 6" round hoop
| Hoop Size | Shape | Max Design Fit | Best For | Machine Type |
|---|---|---|---|---|
| 3" | Round | ~2.1" × 2.1" | Small patches, labels, baby items | Compact / Entry-level |
| 4" × 4" | Square | ~3.5" × 3.5" | Patches, monograms, small logos | Most home machines |
| 4" | Round | ~2.8" × 2.8" | Hat fronts, cap designs | Cap-capable machines |
| 5" × 7" | Rectangular | ~4.5" × 6.5" | Left chest logos, pocket designs | Mid-range home machines |
| 5" | Round | ~3.5" × 3.5" | Medium patches, coaster designs | General purpose |
| 6" × 10" | Rectangular | ~5.5" × 9.5" | T-shirt fronts, wide designs | Advanced home / Semi-pro |
| 6" | Round | ~4.2" × 4.2" | Large patches, tote bag accents | General purpose |
| 8" × 8" | Square | ~7.5" × 7.5" | Large square designs, quilt blocks | Prosumer machines |
| 8" × 12" | Rectangular | ~7.5" × 11.5" | Jacket backs, large projects | Commercial / Multi-needle |
| 10" | Round | ~7.0" × 7.0" | Large circular designs, table linens | Commercial machines |
| 12" | Round | ~8.5" × 8.5" | Extra-large projects | Commercial / Industrial |
Max design fit accounts for standard 0.5"–1" hooping margin. Actual stitch area varies by machine brand.
Enter a hook size in any system and instantly see the equivalent in all other standards.
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