Crochet Hook 4.5 mm (7)

The 4.5 mm crochet hook – otherwise known as a size #7 hook – is used for lighter yarns, such as #2 Fine/Sport/Baby and #3 Light/DK/Worsted. This hook is great for any crochet project where you want a crochet project that is tight with little give or holes. Dishcloths, beanies, and sweaters all work up great with the 4.5 mm / 7 crochet hook.

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Free Crochet Patterns using 4.5 mm (7) Crochet Hooks

These free crochet patterns were all created using various yarn types and brands, but all use the 4.5 mm (7) sized crochet hook.

Helen Shawl

Helen Shawl

Free Crochet Pattern
  • Skill Level: 3. Intermediate,
  • Yarn Brand: Scheepjes,
  • Yarn Weight: Weight 2 – Fine,
  • Hook Size: 4.5 mm (7),
  • Stitches: Tunisian Purl Stitch, Tunisian Simple Stitch,
  • Color: Orange,
Crochet Backless Crop Top Pattern

Crochet Backless Crop Top Pattern

Free Crochet Pattern
  • Skill Level: 1. Basic,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Double Crochet, Single Crochet, Slip Stitch,
Ela Facecloth Set

Ela Facecloth Set

Free Crochet Pattern
  • Skill Level: 2. Easy,
  • Yarn Brand: Stylecraft,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Tunisian Purl Stitch, Tunisian Simple Stitch,
  • Color: Pink,
Blossom Shawl

Blossom Shawl

Free Crochet Pattern
  • Skill Level: 2. Easy,
  • Yarn Brand: Mary Maxim,
  • Yarn Name: Mellowspun DK,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Double Crochet, Half Double Crochet,
Deidra Sweater

Deidra Sweater

Free Crochet Pattern
  • Skill Level: 3. Intermediate,
  • Yarn Brand: Knit Picks, WeCrochet,
  • Yarn Weight: Weight 4 – Medium,
  • Hook Size: 4.5 mm (7), 5 mm (H-8),
  • Stitches: Half Double Crochet, Half Double Crochet Back Loop, Single Crochet, Slip Stitch,
  • Color: Pink,
Misty Sunrise Shawl

Misty Sunrise Shawl

Free Crochet Pattern
  • Skill Level: 3. Intermediate,
  • Yarn Weight: Weight 1 – Super Fine,
  • Hook Size: 4.5 mm (7),
  • Stitches: Tunisian Knit Stitch, Tunisian Simple Stitch,
  • Color: Gray, Yellow,
Spring Crochet Scarf

Spring Crochet Scarf

Free Crochet Pattern
  • Skill Level: 1. Basic,
  • Yarn Weight: Weight 2 – Fine,
  • Hook Size: 4.5 mm (7),
  • Stitches: Double Crochet, Half Double Crochet Two Together, Single Crochet,
Bingley Hat

Bingley Hat

Free Crochet Pattern
  • Skill Level: 2. Easy,
  • Yarn Brand: Mary Maxim,
  • Yarn Name: Mellowspun DK,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Half Double Crochet, Half Double Crochet Back Loop, Slip Stitch, Slip Stitch Back Loop,
  • Color: Blue, Brown, Gray, White,
Mishelka Blanket

Mishelka Blanket

Free Crochet Pattern
  • Skill Level: 2. Easy,
  • Yarn Weight: Weight 2 – Fine,
  • Hook Size: 4.5 mm (7),
  • Stitches: Tunisian Simple Stitch,
  • Color: Pink,
Crochet Diamond Mesh Top

Crochet Diamond Mesh Top

Free Crochet Pattern
  • Skill Level: 2. Easy,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Double Crochet,
  • Color: Green,
Herringbone Moss Sweater

Herringbone Moss Sweater

Free Crochet Pattern
  • Skill Level: 3. Intermediate,
  • Yarn Brand: WeCrochet,
  • Yarn Name: Swish DK,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Herringbone Half Double Crochet, Moss / Linen, Single Crochet, Slip Stitch,
  • Color: Gray, Green, White,
Crochet Kitchen Towel

Crochet Kitchen Towel

Free Crochet Pattern
  • Skill Level: 2. Easy, 3. Intermediate,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4 mm (G-6), 4.5 mm (7),
  • Stitches: Half Double Crochet, Single Crochet, Slip Stitch,
  • Color: Gray, White, Yellow,
Herringbone Backpack

Herringbone Backpack

Free Crochet Pattern
  • Yarn Brand: Paint Box Yarns,
  • Yarn Name: Simply Aran,
  • Yarn Weight: Weight 4 – Medium,
  • Hook Size: 4.5 mm (7),
  • Stitches: Half Double Crochet, Herringbone Half Double Crochet, Single Crochet, Slip Stitch,
  • Color: Brown, Neutral,
Christmas Mini Hat Ornaments Crochet

Christmas Mini Hat Ornaments Crochet

Free Crochet Pattern
  • Skill Level: 2. Easy,
  • Yarn Weight: Weight 4 – Medium,
  • Hook Size: 4.5 mm (7),
  • Stitches: Half Double Crochet, Half Double Crochet Back Loop, Slip Stitch,
  • Color: Gray, Neutral,
Thermal Crochet Coaster

Thermal Crochet Coaster

Free Crochet Pattern
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Single Crochet, Single Crochet Back Loop,
  • Color: Brown, Orange, Yellow,
Crochet Christmas Star Pattern

Crochet Christmas Star Pattern

Free Crochet Pattern
  • Skill Level: 1. Basic, 2. Easy,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Double Crochet, Half Double Crochet, Single Crochet, Slip Stitch, Triple Crochet,
  • Color: Brown, Green, Neutral,
Abbey Blanket

Abbey Blanket

Free Crochet Pattern
  • Skill Level: 1. Basic,
  • Yarn Brand: Paint Box Yarns,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Half Double Crochet, Single Crochet,
Chloe Tabard Top

Chloe Tabard Top

Free Crochet Pattern
  • Skill Level: 3. Intermediate,
  • Yarn Brand: WeCrochet,
  • Yarn Name: Brava Worsted,
  • Yarn Weight: Weight 4 – Medium,
  • Hook Size: 4.5 mm (7),
  • Stitches: Half Double Crochet,
  • Color: Gray,
Elongated Single Crochet Stitch

Elongated Single Crochet Stitch

Free Crochet Pattern
  • Skill Level: 2. Easy,
  • Yarn Weight: Weight 4 – Medium,
  • Hook Size: 4.5 mm (7), 5 mm (H-8),
  • Stitches: Single Crochet,
  • Color: Neutral,
Crochet Sheep Blanket

Crochet Sheep Blanket

Free Crochet Pattern
  • Skill Level: 2. Easy,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 3.25 mm (D-3), 4.5 mm (7),
  • Color: White,
Herringbone Moss Stitch Hat

Herringbone Moss Stitch Hat

Free Crochet Pattern
  • Skill Level: 2. Easy,
  • Hook Size: 4.5 mm (7),
  • Stitches: Half Double Crochet,
  • Color: Green, Neutral,
Colourful C2C Pillow

Colourful C2C Pillow

Free Crochet Pattern
  • Skill Level: 3. Intermediate,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
Textured Crochet Neck Warmer Pattern

Textured Crochet Neck Warmer Pattern

Free Crochet Pattern
  • Skill Level: 3. Intermediate,
  • Yarn Brand: Lion Brand,
  • Yarn Name: Feels Like Heaven,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Half Double Crochet, Single Crochet, Triple Crochet,
  • Color: Pink,
Ridged Crochet Fingerless Gloves

Ridged Crochet Fingerless Gloves

Free Crochet Pattern
  • Skill Level: 2. Easy,
  • Yarn Brand: WeCrochet,
  • Yarn Name: Comfy Worsted,
  • Yarn Weight: Weight 4 – Medium,
  • Hook Size: 4.5 mm (7), 5.5 mm (I-9),
  • Stitches: Single Crochet Back Loop,
  • Color: White,
The Flora Quilt

The Flora Quilt

Free Crochet Pattern
  • Skill Level: 3. Intermediate,
  • Yarn Brand: WeCrochet,
  • Yarn Weight: Weight 4 – Medium,
  • Hook Size: 4.5 mm (7),
Herringbone Moss Mittens

Herringbone Moss Mittens

Free Crochet Pattern
  • Skill Level: 3. Intermediate,
  • Yarn Brand: WeCrochet,
  • Yarn Name: Swish DK,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Herringbone Half Double Crochet, Moss / Linen,
  • Color: Pink,
How to Make a Crochet Half Circle For Beginners

How to Make a Crochet Half Circle For Beginners

Free Crochet Pattern
  • Skill Level: 2. Easy,
  • Yarn Brand: Lion Brand,
  • Yarn Name: Feels Like Heaven,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Double Crochet, Single Crochet,
Crochet Seaside Tank Top

Crochet Seaside Tank Top

Free Crochet Pattern
  • Skill Level: 2. Easy,
  • Yarn Brand: Lion Brand,
  • Yarn Name: Coboo Yarn,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 3.5 mm (E-4), 4.5 mm (7),
  • Stitches: Single Crochet, Slip Stitch,
  • Color: Neutral,
Crochet Spiral Coasters

Crochet Spiral Coasters

Free Crochet Pattern
  • Skill Level: 3. Intermediate,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Single Crochet, Slip Stitch,
  • Color: White,
Crochet Round Placemats

Crochet Round Placemats

Free Crochet Pattern
  • Skill Level: 1. Basic,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Single Crochet, Slip Stitch,
  • Color: White,
Crochet Slouchy Beanie

Crochet Slouchy Beanie

Free Crochet Pattern
  • Skill Level: 1. Basic,
  • Yarn Brand: Lion Brand,
  • Yarn Name: Comfy Cotton Blend,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Half Double Crochet, Half Double Crochet Back Loop, Single Crochet,
  • Color: Variegated,
Rustic Crochet Dishcloths

Rustic Crochet Dishcloths

Free Crochet Pattern
  • Skill Level: 2. Easy,
  • Yarn Brand: WeCrochet,
  • Yarn Name: Dishie,
  • Yarn Weight: Weight 4 – Medium,
  • Hook Size: 4.5 mm (7),
  • Stitches: Double Crochet, Single Crochet,
  • Color: Orange, White,
Weston Bobble Hat

Weston Bobble Hat

Free Crochet Pattern
  • Skill Level: 3. Intermediate,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Half Double Crochet,
  • Color: Blue,
Widcombe C2C Crochet Hat

Widcombe C2C Crochet Hat

Free Crochet Pattern
  • Skill Level: 3. Intermediate,
  • Yarn Brand: WeCrochet,
  • Yarn Name: Wool of the Andes Worsted,
  • Yarn Weight: Weight 4 – Medium,
  • Hook Size: 4.5 mm (7),
  • Stitches: Half Double Crochet,
  • Color: Black, White,
Seeing Stripes Shawl

Seeing Stripes Shawl

Free Crochet Pattern
  • Skill Level: 2. Easy,
  • Yarn Brand: Rowan,
  • Yarn Name: Summerlite 4 Ply,
  • Yarn Weight: Weight 1 – Super Fine,
  • Hook Size: 4.5 mm (7),
  • Stitches: Tunisian Simple Stitch,
  • Color: Blue, Red,
Mirabilis Puff Stitch Beanie

Mirabilis Puff Stitch Beanie

Free Crochet Pattern
  • Skill Level: 3. Intermediate,
  • Yarn Brand: WeCrochet,
  • Yarn Name: Kindred,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Puff,
  • Color: Orange,
Mannequin Shawl

Mannequin Shawl

Free Crochet Pattern
  • Skill Level: 3. Intermediate,
  • Yarn Weight: Weight 1 – Super Fine,
  • Hook Size: 4.5 mm (7),
  • Stitches: Tunisian Simple Stitch,
  • Color: Variegated,
Blessed Three Star Coaster

Blessed Three Star Coaster

Free Crochet Pattern
  • Skill Level: 2. Easy,
  • Yarn Weight: Weight 4 – Medium,
  • Hook Size: 4.5 mm (7),
  • Stitches: Tunisian Knit Stitch,
Martha’s Retro C2C Crochet Apron

Martha’s Retro C2C Crochet Apron

Free Crochet Pattern
  • Skill Level: 2. Easy,
  • Yarn Brand: Paint Box Yarns,
  • Yarn Weight: Weight 4 – Medium,
  • Hook Size: 4.5 mm (7),
  • Color: Pink, Red,
Hawthorne V Neck Tee

Hawthorne V Neck Tee

Free Crochet Pattern
  • Skill Level: 3. Intermediate,
  • Yarn Brand: WeCrochet,
  • Yarn Weight: Weight 2 – Fine,
  • Hook Size: 4.5 mm (7),
  • Stitches: Double Crochet, Half Double Crochet,
  • Color: Gray,
Rainbow Granny Square Sweater

Rainbow Granny Square Sweater

Free Crochet Pattern
  • Skill Level: 2. Easy,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Double Crochet,
Eleanor Sweater Scarf

Eleanor Sweater Scarf

Free Crochet Pattern
  • Skill Level: 2. Easy,
  • Yarn Brand: WeCrochet,
  • Yarn Name: Swish DK,
  • Yarn Weight: Weight 3 – Light,
  • Hook Size: 4.5 mm (7),
  • Stitches: Half Double Crochet,
  • Color: Pink,
Cap Sleeve Crochet Top

Cap Sleeve Crochet Top

Free Crochet Pattern
  • Skill Level: 3. Intermediate,
  • Yarn Brand: Lion Brand,
  • Yarn Name: 24/7 Cotton,
  • Yarn Weight: Weight 4 – Medium,
  • Hook Size: 4.5 mm (7),
  • Stitches: Herringbone Double Crochet,
  • Color: Purple,


Common Questions About 4.5 mm (7)

Here we answer some common questions about 4.5 mm (7).

How many millimeters is the 7 sized crochet hook?

Answer: Unfortunately, crochet hook manufacturers have not kept this standard. Some #7 size hooks are 4.5mm while others are 4.75mm. Both of these are considered the correct size for a #7 US hook .