What yarn is recommended to use with the 3.5 mm (E-4) crochet hook?

It is recommended that yarn weights are used with the 3.5 mm (E-4) crochet hook size.

What is the comparable UK size of a E-4 crochet hook?

The United Kingdom size of 9 is the same as the US crochet hook size of E-4.

The metric size of 3.5 mm is the same as the US crochet hook size of E-4.

The US size of E-4 is the same as the metric crochet hook size of 3.5 mm.

These free crochet patterns were all created using various yarn types and brands, but all use the 3.5 mm (E-4) sized crochet hook.

Bunny Ear Headband
Free Crochet Pattern
- Skill Level: 2. Easy,
- Yarn Brand: Lion Brand,
- Yarn Name: Vanna’s Choice,
- Yarn Weight: Weight 4 – Medium,
- Hook Size: 3.5 mm (E-4),
- Stitches: Single Crochet,
- Color: White,
Crochet Amigurumi Christmas Moose
Free Crochet Pattern
- Skill Level: 3. Intermediate,
- Yarn Weight: Weight 4 – Medium,
- Hook Size: 3.5 mm (E-4),
Free Crochet Soap Cozy Pattern
Free Crochet Pattern
- Skill Level: 2. Easy,
- Yarn Brand: Zeeman,
- Yarn Name: Royal Melange,
- Yarn Weight: Weight 4 – Medium,
- Hook Size: 3.5 mm (E-4),
- Stitches: Single Crochet,
- Color: Blue, Red, White,

US Name:	E-4
UK Name:	9
Metric Name:	3.5 mm
Yarn Weight:	This crochet hook size works well when paired with the following yarn weight(s). Super Fine Weight #1: Sock, Fingering and Baby Fine Weight #2: Sport and Baby