Crochet Mermaid Tail Blanket Pattern

Dive into the world of crochet with my enchanting Mermaid Tail Blanket Pattern!

This whimsical and cozy pattern will transform you or your little one into a mythical sea creature while keeping you warm and comfortable. The free pattern is below.

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PATTERN INFORMATION

Skill Level

This free crochet pattern is a beginner project. It uses basic stitches in simple stitches repeats. 

Project Materials

• M/N 9 mm crochet hook
• Worsted weight yarn. I used 4 skeins (7 oz/198 g) or Red Heart Super Saver in the color Flamingo.
• Tapestry needle
• Locking stitch markers

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Crochet Gauge

8 rounds = 4 inches

11 stitches = 4 inches

Mermaid Tail Blanket Size Chart

Size	Width	Total Length
Child	16.5 inches	54 inches
Teen	17.5 inches	58 inches
Adult	18.5 inches	62 inches

Pattern Notes

• Work this free pattern in the round from the bottom up.
• Work the tail/blanket section of this great project first.
• Add the tail fin once the tail/blanket section is complete.
• If you are new to crochet, I have a a video tutorial for many basic stitches on my YouTube channel.

Etsy Shop

This pattern is also available as an ad-free PDF pattern in my Etsy Shop.

If you love this free crochet mermaid tail pattern, be sure to check out my other fun and free crochet blankets.

PATTERN INSTRUCTIONS

Tail Pattern

Rounds 1-27 are the same for all sizes.

Rnd 1: Magic Ring, ch 2, 6 dc, join. (6 stitches)

Rnd 2: Ch 2, 2 dc in each st, join. (12 stitches)

​Rnd 3: Ch 2, dc in each st, join. (12 stitches)

Rnd 4: Ch 2, *2 dc, dc in next st, repeat from * around, join. (18 stitches)

Rnd 5: Ch 2, dc in each st, join. (18 stitches)

Rnd 6: Ch 2, *2 dc, dc in next 2 sts, repeat from * around, join. (24 stitches)

Rnd 7: Ch 2, dc in each st, join. (24 stitches)

Rnd 8: Ch 2, *2 dc, dc in next 3 sts, repeat from * around, join. (30 stitches)

Rnd 9: Ch 2, dc in each st, join. (30 stitches)

Rnd 10: Ch 2, *2 dc, dc in next 4 sts, repeat from * around, join. (36 stitches)

Rnd 11: Ch 2, dc in each st, join. (36 stitches)

Rnd 12: Ch 2, *2 dc, dc in next 5 sts, repeat from * around, join. (42 stitches)

Rnd 13: Ch 2, dc in each st, join. (42 stitches)

Rnd 14: Ch 2, *2 dc, dc in next 6 sts, repeat from * around, join. (48 stitches)

Rnd 15: Ch 2, dc in each st, join. (48 stitches)

Rnd 16: Ch 2, *2 dc, dc in next 7 sts, repeat from * around, join. (54 stitches)

Rnd 17: Ch 2, dc in each st, join. (54 stitches)

Rnd 18: Ch 2, *2 dc, dc in next 8 sts, repeat from * around, join. (60 stitches)

Rnd 19: Ch 2, dc in each st, join. (60 stitches)

Rnd 20: Ch 2, *2 dc, dc in next 9 sts, repeat from * around, join. (66 stitches)

Rnd 21: Ch 2, dc in each st, join. (66 stitches)

Rnd 22: Ch 2, *2 dc, dc in next 10 sts, repeat from * around, join. (72 stitches)

Rnd 23: Ch 2, dc in each st, join. (72 stitches)

Rnd 24: Ch 2, *2 dc, dc in next 11 sts, repeat from * around, join. (78 stitches)

Rnd 25: Ch 2, dc in each st, join. (78 stitches)

Rnd 26: Ch 2, *2 dc, dc in next 12 sts, repeat from * around, join. (84 stitches)

Rnd 27: Ch 2, dc in each st, join. (84 stitches)

Continue for Child Size Mermaid Tail

Rnds 28-108: Ch 2, dc in each st, join. (84 stitches)

Fasten off and weave in your ends.

Continue for Teen Size Mermaid Tail

Rnd 28: Ch 2, *2 dc, dc in next 13 sts, repeat from * around, join. (90 stitches)

Rnds 29-116 : Ch 2, dc in each st, join. (90 stitches)

Fasten off and weave in your ends.

Continue for Adult Size Mermaid Tail

Rnd 28: Ch 2, *2 dc, dc in next 13 sts, repeat from * around, join. (90 stitches)

Rnd 29: Ch 2, dc in each st, join. (90 stitches)

Rnd 30: Ch 2, *2 dc, dc in next 14 sts, repeat from * around, join. (96 stitches)

Rnds 31-124: Ch 2, dc in each st, join. (96 stitches)

Fasten off and weave in your ends.

Fin Pattern

The fin pattern is the same for all sizes. 

Join your yarn between rounds 14 and 15.

Ch 1 and make a sc in the same space. Work towards the tip of the tail.  Sc in the side of each row and in the chain space between each row. 

Slip stitch in the point of the tail and mark with a stitch marker.

Continue to sc up the opposite side, ending between rows 14 & 15. (28 stitches on each side = 56 total stitches)

← Working away from the tail

​→ Working towards the tail

← Row 1: ch 58 (58 chains)

→ Row 2: hdc in the 3rd chain from the hook and in each rem ch, join with a sl st to the next stitch on the tail, turn (56 stitches)

← Row 3: ch 2, hdc blo to the second to last st, leave the last st unworked, turn

→ Row 4: sl st in the first st, hdc blo in the next st and in each rem st, join with a sl st to the next sc on the tail, turn

← All odd numbered rows (5-53) are working away from the tail: repeat row 3

→ All even numbered rows (6-54) are working back towards the tail: repeat row 4

​Rows 1- 54 will each decrease by one stitch.

Skip over the middle stitch at the tip of the tail. You should have marked it with a stitch marker.

← Row 55: ch 2, hdc blo to the second to last st, 2 hdc blo in the last st, turn

→ Row 56: 2 hdc blo in first st, hdc blo in each rem st, join with a sl st to the next sc on the tail, turn

← All odd numbered rows (57-105) are working away from the tail: repeat row 55

→ All even numbered rows (58-106) are working back towards the tail: repeat row 56

Rows 55- 106 will each increase by one stitch.

Fasten off and weave in your ends.