Baby Crochet Mermaid Tail Pattern for Beginners
I’m super excited to share my Baby Crochet Mermaid Tail Pattern with you. This adorable pattern is designed for two baby sizes: 0-3 and 3-6 months. You can choose to make it either waist-length or chest-length, depending on what you prefer. It’s an easy pattern to follow, perfect for beginners. Let’s dive in and make your little one look like the cutest mermaid ever! The free crochet pattern is below.
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Free Crochet Mermaid Tail Pattern
This Baby Crochet Mermaid Tail Pattern is perfect for so many occasions! It’s ideal for adorable photo shoots, capturing precious memories of your little one looking like a magical mermaid.
The tail also makes a unique and charming baby shower gift that any new parent would love. Additionally, it’s great for a baby’s first Halloween. You can even use my starfish appliqué pattern to make a matching headband.
Crochet Project Materials Needed
- Crochet Hook Size: J-10 6 mm
- Yarn: Worsted weight yarn #4
- Yarn needle: Use this to weave in your ends.
- Scissors: Use scissors to fasten off your yarn.
- Stitch marker(s): Optional. Use these to help keep track of your stitches.
Printable PDF Version
View this pattern in my Etsy shop: Crochet Mermaid Tail Pattern
Crochet Mermaid Tail Pattern Information
Skill Level
Advanced Beginner. Projects may include simple stitch patterns, color work, and/or shaping.
Size Chart
| Size | Chest | Waist | Hips |
| 0-3 Months | 16 inches | 18 inches | 19 inches |
| 3-6 Months | 17 inches | 19 inches | 20 inches |
Gauge
12 stitches and 6 rounds = 4 inches
Crochet Terms
- tc = treble crochet
- sc = single crochet
- dc = double crochet
- ch/chs = chain/chains
- st/sts = stitch/stitches
- rnd/rnds = rounds/rounds
Pattern Notes
- You will make the tail first and then add the fin.
- This pattern is written for two lengths: waist and chest length.
- The fin pattern is the same for both sizes.
- The pattern is worked in the round from the bottom up.
- The chain at the beginning of each round does not count as your first stitch.
- Join each round with a slip stitch to the first stitch made in that round.
- Repeat instructions between the asterisks (*) for the rest of the round.
- The pattern is written in US terms.
Magic Circle Alternative
If you find the magic circle tricky, try this easier method for round 1. Chain 5, make 12 tc in the 5th ch from the hook, join (12 stitches)
Crochet Mermaid Tail Pattern Instructions
You can make your mermaid tail either waist-length or chest-length.
0-3 Month Baby Crochet Mermaid Tail Pattern
Rnd 1: Magic circle, 12 tc, join (12 stitches)
Rnd 2: Ch 3, *2 tc in 3 sts, tc in 3 sts*, join (18 stitches)
Rnd 3: Ch 3, *2 tc in 2 sts, tc in 7 sts*, join (22 stitches)
Rnd 4: Ch 3, *2 tc in 2 sts, tc in 9 sts*, join (26 stitches)
Rnd 5: Ch 3, *2 tc in 2 sts, tc in 11 sts*, join (30 stitches)
Rnd 6: Ch 3, *2 tc in 2 sts, tc in 13 sts*, join (34 stitches)
Rnd 7: Ch 3, *2 tc in 3 sts, tc in 14 sts*, join (40 stitches)
Rnd 8: Ch 3, *2 tc in 3 sts, tc in 17 sts*, join (46 stitches)
Rnd 9: Ch 3, *2 tc in 3 sts, tc in 20 sts*, join (52 stitches)
Waist length: 0-3 Month Baby Crochet Mermaid Tail Pattern
Rnds 10- 20: Ch 3, tc in each st, join (52 stitches)
Rnd 21: Ch 1, sc in each st, join and finish off
Chest length: 0-3 Month Baby Crochet Mermaid Tail Pattern
Rnds 10- 27: Ch 3, tc in each st, join (52 stitches)
Rnd 28: Ch 1, sc in each st, join and finish off
3-6 Month Baby Crochet Mermaid Tail Pattern
Rnd 1: Magic circle, 12 tc, join (12 stitches)
Rnd 2: Ch 3, *2 tc in 3 sts, tc in 3 sts*, join (18 stitches)
Rnd 3: Ch 3, *2 tc in 2 sts, tc in 7 sts*, join (22 stitches)
Rnd 4: Ch 3, *2 tc in 2 sts, tc in 9 sts*, join (26 stitches)
Rnd 5: Ch 3, *2 tc in 2 sts, tc in 11 sts*, join (30 stitches)
Rnd 6: Ch 3, *2 tc in 2 sts, tc in 13 sts*, join (34 stitches)
Rnd 7: Ch 3, *2 tc in 3 sts, tc in 14 sts*, join (40 stitches)
Rnd 8: Ch 3, *2 tc in 3 sts, tc in 17 sts*, join (46 stitches)
Rnd 9: Ch 3, *2 tc in 3 sts, tc in 20 sts*, join (52 stitches)
Rnd 10: Ch 3, *2 tc in 3 sts, tc in 23 sts*, join (58 stitches)
Waist length: 3-6 Month Baby Crochet Mermaid Tail Pattern
Rnds 11- 23: Ch 3, tc in each st, join (58 stitches)
Rnd 24: Ch 1, sc in each st, join and finish off
Chest length: 3-6 Month Baby Crochet Mermaid Tail Pattern
Rnds 11- 33: Ch 3, tc in each st, join (58 stitches)
Rnd 34: Ch 1, sc in each st, join and finish off
Fin for the Baby Crochet Mermaid Tail Pattern
Lay your mermaid tail flat and make sure that your stitches with the increases are in the middle (see figure 1)
Join the yarn on the side of the tail between rows 5 & 6 and then ch 1 and sc (see figure 2)
Continue to sc around the tc sts on each round and in the space between each round- you will sc down one side, sl st in the middle at the bottom, and continue to sc up the other side until you reach the area between rows 5 & 6, do NOT finish off, begin pattern below (see figure 3)
Working away from the tail: →
Working towards the tail: ←
←Row 1: (see figure 4) Ch 36, dc in 2nd ch from hook and in each rem ch, sl st in 2nd sc on tail (35 stitches)
→Row 2: Ch 2, working in back loops dc 34 (34 stitches)
←Row 3: sl st in first st, ch 2, working in front loops dc 33, sl st in 3rd sc on tail (33 stitches)
→ Row 4: Ch 2, working in back loops dc 32 (32 stitches)
←Row 5: sl st in first st, ch 2, working in front loops dc 31, sl st in 4th sc on tail (31 stitches)
→ Row 6: Ch 2, working in back loops dc 30 (30 stitches)
←Row 7: sl st in first st, ch 2, working in front loops dc 29, sl st in 5th sc on tail (29 stitches)
→ Row 8: Ch 2, working in back loops dc 28 (28 stitches)
←Row 9: sl st in first st, ch 2, working in front loops dc 27, sl st in 6th sc on tail (27 stitches)
→ Row 10: Ch 2, working in back loops dc 26 (26 stitches)
←Row 11: sl st in first st, ch 2, working in front loops dc 25, sl st in 7th sc on tail (25 stitches)
→ Row 12: Ch 2, working in back loops dc 24 (24 stitches)
←Row 13: sl st in first st, ch 2, working in front loops dc 23, sl st in 8th sc on tail (23 stitches)
→ Row 14: Ch 2, working in back loops dc 22 (22 stitches)
←Row 15: sl st in first st, ch 2, working in front loops dc 21, sl st in 9th sc on tail (21 stitches)
→ Row 16: Ch 2, working in back loops dc 20 (20 stitches)
←Row 17: sl st in first st, ch 2, working in front loops dc 19, sl st in 10th sc on tail (19 stitches)
→ Row 18: Ch 2, working in back loops dc 18 (18 stitches)
←Row 19: sl st in first st, ch 2, working in front loops dc 27, sl st in 11th sc on tail (17 stitches)
→ Row 20: Ch 2, working in back loops dc 16, 2 dc in last st (18 stitches)
←Row 21: working in front loops, ch 2, 2 dc in 1st st, dc 17, sl st in 12th sc on tail (19 stitches)
→ Row 22: Ch 2, working in back loops, dc 18, 2 dc in last st (20 stitches)
←Row 23: working in front loops, ch 2, 2 dc in 1st st, dc 19, sl st in 13th sc on tail (21 stitches)
→ Row 24: Ch 2, working in back loops, dc 20, 2 dc in last st (22 stitches)
←Row 25: working in front loops, ch 2, 2 dc in 1st st, dc 21, sl st in 14th sc on tail (23 stitches)
→ Row 26: Ch 2, working in back loops, dc 22, 2 dc in last st (24 stitches)
←Row 27: working in front loops, ch 2, 2 dc in 1st st, dc 23, sl st in 15th sc on tail (25 stitches)
→ Row 28: Ch 2, working in back loops, dc 24, 2 dc in last st (26 stitches)
←Row 29: working in front loops, ch 2, 2 dc in 1st st, dc 25, sl st in 16th sc on tail (27 stitches)
→ Row 30: Ch 2, working in back loops, dc 26, 2 dc in last st (28 stitches)
←Row 31: working in front loops, ch 2, 2 dc in 1st st, dc 27, sl st in 17th sc on tail (29 stitches)
→ Row 32: Ch 2, working in back loops, dc 28, 2 dc in last st (30 stitches)
←Row 33: working in front loops, ch 2, 2 dc in 1st st, dc 29, sl st in 18th sc on tail (31 stitches)
→ Row 34: Ch 2, working in back loops, dc 30, 2 dc in last st (32 stitches)
←Row 35: working in front loops, ch 2, 2 dc in 1st st, dc 31, sl st in 19th sc on tail (33 stitches)
→ Row 36: Ch 2, working in back loops, dc 32, 2 dc in last st (34 stitches)
←Row 37: working in front loops, ch 2, 2 dc in 1st st, dc 33, sl st in 20th sc on tail (35 stitches)
Finishing the Baby Crochet Mermaid Tail Pattern
Fasten off and then weave in the ends.
Looking for More Free Crochet Patterns?
You may also like my Cinderella dress, Snow White dress, baby cardigan, baby booties, and my baby witch costume patterns.
Let’s Connect!
I’d love to hear from you! You can find me on social media- Instagram, Facebook, Pinterest, and my YouTube channel. Until then, happy crocheting! -Melissa