Knitted Harmony Baby Hat — Free DK Yarn Pattern for Newborns to 9 Months
The Knitted Harmony Baby Hat is a sweet, easy-to-follow DK yarn pattern that creates a soft, cozy hat for babies from large preemie/small newborn up to 6–9 months. This pattern uses simple stitch textures and shaping to make a charming hat that can be dressed up with a small bow or ribbon flower. Below are the gauge, materials, step-by-step instructions for three sizes, and a quick finishing guide.

Harmony Baby Hat in soft DK yarn — a simple knitted hat pattern for babies.
Tension / Gauge: for all sizes
22sts = 4” (10cm)
Large Preemie / Small Newborn Baby
Requirements:
- DK yarn (around 12 – 14g, if you are using acrylic DK)
- 4mm needles
Measurements:
- Width: 10½” all around
- Height: 5¼”
Instructions:
Using 4mm needles, cast on 57sts
Knit 5 rows
6th Row: S1, purl to last st, k1
7th Row: S1, *yon, k2tog tbl, yon, k2tog,* repeat from * to * to end
8th Row: S1, purl to last st, k1
9th Row: S1, knit across row
10th Row: S1, purl to last st, k1
Repeat the last 4 rows 5 times more
Shape Top ~
1st Row: (K5, k2tog) repeat to last st, k1 — 49sts
2nd, 4th, 6th, 8th & 10th Rows: S1, purl to last st, k1
3rd Row: (K4, k2tog) repeat to last st, k1 — 41sts
5th Row: (K3, k2tog) repeat to last st, k1 — 33sts
7th Row: (K2, k2tog) repeat to last st, k1 — 25sts
9th Row: (K1, k2tog) repeat to last st, k1 — 17sts
11th Row: (K2tog) repeat to last st, k1 — 9sts
Cut yarn (leaving a long ‘tail’ to use for sewing up), draw the end through all stitches, pull up tightly.
Sew up the seam.
Darn away ends.
To make a bow
Cast on 15, or 17 stitches
Knit 3 rows
K2, purl to last 2sts, k2
Knit a row
K2, purl to last 2sts, k2
Knit 3 rows
Cast off
Darn away ends.
Wrap a length of yarn round the middle 4 or 5 times, and pull tight.
Attach to the hat. Darn away ends.
Add a small ribbon flower decoration if desired.
0 – 3 months Baby
Requirements:
- DK yarn (around 15 – 18g, if you are using acrylic DK)
- 4mm needles
Measurements:
- Width: 12” all around (30.5cm)
- Height: 5¾”
Instructions:
Using 4mm needles, cast on 65sts
Knit 7 rows
8th Row: S1, purl to last st, k1
9th Row: S1, *yon, k2tog tbl, yon, k2tog,* repeat from * to * to end
10th Row: S1, purl to last st, k1
11th Row: S1, knit across row
12th Row: S1, purl to last st, k1
Repeat the last 4 rows 5 times more
Shape Top ~
1st Row: (K6, K2tog) repeat to last st, k1 — 57sts
2nd, 4th, 6th, 8th, 10th & 12th Rows: S1, purl to last st, k1
3rd Row: (K5, K2tog) repeat to last st, k1 — 49sts
5th Row: (K4, K2tog) repeat to last st, k1 — 41sts
7th Row: (K3, K2tog) repeat to last st, k1 — 33sts
9th Row: (K2, K2tog) repeat to last st, k1 — 25sts
11th Row: (K1, K2tog) repeat to last st, k1 — 17sts
13th Row: (K2tog) repeat to last st, k1 — 9sts
Cut yarn (leaving a long ‘tail’ to use for sewing up), draw the end through all stitches, pull up tightly.
Sew up the seam.
Darn away ends.
6 – 9 months Baby
Requirements:
- DK yarn (around 18 – 20g, if you are using acrylic DK)
- 4mm needles
Measurements:
- Width: 13¼” (33.5cm) all around
- Height: 6½” (16.5cm)
Instructions:
Using 4mm needles, cast on 73sts
Knit 7 rows
8th Row: S1, purl to last st, k1
9th Row: S1, *yon, k2tog tbl, yon, k2tog,* repeat from * to * to end
10th Row: S1, purl to last st, k1
11th Row: S1, knit across row
12th Row: S1, purl to last st, k1
Repeat the last 4 rows 6 times more
Shape Top ~
1st Row: (K6, K2 tog) repeat to last st, k1 — 64sts
2nd, 4th, 6th, 8th, 10th & 12th Rows: S1, purl to last st, k1
3rd Row: (K5, K2tog) repeat to last st, k1 — 55sts
5th Row: (K4, K2tog) repeat to last st, k1 — 46sts
7th Row: (K3, K2tog) repeat to last st, k1 — 37sts
9th Row: (K2, K2tog) repeat to last st, k1 — 28sts
11th Row: (K1, K2tog) repeat to last st, k1 — 19sts
13th Row: (K2tog) repeat to last st, k1 — 10sts
Cut yarn (leaving a long ‘tail’ to use for sewing up), draw the end through all stitches, pull up tightly.
Sew up the seam.
Darn away ends.
Finishing tips
- Use a tapestry needle to sew the seam neatly and to weave in ends securely.
- For a snugger fit, choose a slightly firmer yarn or smaller needles and check gauge.
- Optional decorations (bow, ribbon flower) can be sewn on the front — avoid small items that could be a choking hazard for very young babies.