How to sew a hat from knit fabric: choose fleece, brushed wool, or a wool-blend knit, check comfort, stretch, and shrinkage, take head circumference and height measurements, sew a simple rectangle hat using head circumference minus 3 cm, or make a classic double-layer hat from a pattern.
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Things you will learn
For cold weather, the source suggests fleece, brushed wool, or blended fabrics with synthetic and wool fibers.
Test the fabric against your neck or inner elbow before cutting; a scratchy fabric will be uncomfortable as a hat.
The stretchier the fabric is, the more stretch allowance you need to account for when sewing.
Before cutting, rinse the knit fabric in warm water, gently squeeze it out, and dry it flat to check shrinkage and colorfastness.
For the simple rectangle hat, the source subtracts 3 cm from a 54 cm head circumference and uses a 51 cm width.
What you will make
You can sew two basic versions: a simple hat from a rectangular piece of fabric or a classic double-layer hat from a wedge pattern. The source also shows beanie, ear-style, turban, and companion-fabric versions as design ideas based on the same foundation.
Materials and tools
Materials
Knit fabric, For cold weather, use fleece, brushed wool, or blended fabrics with synthetic and wool fibers.
Matching thread, Used for seams and for hand-closing the opening in the double-layer hat.
Sheet of paper, Optional; placed under the knit fabric to stabilize it while stitching.
Tools
Measuring tape, For head circumference and hat height.
Sharp scissors, For cutting knit fabric.
Sewing pins, For pinning folds, marks, and pattern pieces.
Domestic sewing machine, Main tool; a serger is helpful but not required.
Serger, Speeds up sewing and finishes knit edges neatly, but a regular machine can be used.
Ballpoint or twin needle, Makes sewing stretchy fabric easier.
Larger needle size, In the source, N90 is suggested as a test option instead of N70 for thin fabric.
Before cutting, hold the fabric against your neck or inner elbow. If it feels scratchy, the hat will not be pleasant to wear.
Check shrinkage and colorfastness
Rinse the knit fabric in warm water, gently squeeze it out, and dry it flat. This reveals shrinkage and color bleeding, especially in printed fabrics.
Take two measurements
You need head circumference and finished hat height. For head circumference, place the measuring tape around the head through the middle of the ears and forehead without pulling too tightly. Measure height from the crown to the lower edge of the hat.
How to prepare the machine for knit fabric
The source gives three practical tricks for sewing stretchy fabric on a regular domestic machine.
Install a larger needle size
If N70 is recommended for thin fabric, the source suggests testing N90. The photo shows the difference in the stitch result.
For thin fabric, N90 can be tested instead of N70.
Lower the needle slightly and check the motion
After adjustment, turn the handwheel manually and make sure the needle does not hit the shuttle.
After adjustment, check the needle manually with the handwheel.
Check by hand first
Do not start sewing with the foot pedal until you have manually checked that the needle does not catch the shuttle.
Place a sheet of paper under the fabric
A sheet of paper underneath stabilizes the knit fabric so it stretches less while stitching. After sewing, remove the paper by dampening it slightly.
Paper underneath helps prevent the fabric from stretching while sewing.
Simple rectangle hat
This version is sewn without a separate paper pattern.
Calculate the rectangle
For the width, use head circumference. For a closer fit, subtract 3 cm: in the source example, 54 - 3 = 51 cm. Height depends on the style; for a winter hat with an 8–12 cm cuff, the source gives a 51 × 33 cm rectangle.
The simple version is sewn from a rectangle.
Sew the hat along the height
Fold the rectangle right sides together and stitch along the height.
Align the open edge and center the seam
Turn the piece and align the open edge so the vertical seam runs exactly through the center.
Align the open edge so the seam sits in the center.
Mark 3 cm on both sides of the center seam
From the central vertical seam, measure 3 cm to each side.
Measure 3 cm from the center seam on each side.
Match the side fold to the mark
Fold the hat so the side fold meets the mark, then pin it at that point.
Match the side fold to the mark.
Sew the top seam
Sew the top seam with a serger or with a regular machine followed by edge finishing.
The top seam can be sewn with a serger or regular machine.
Turn the hat right side out
After turning, shape the top. Finished, the simple version looks like a soft knit fabric hat with a neat crown.
Finished simple hat from a rectangle.
Classic double-layer hat from a pattern
This version is closer to a sporty hat: it fits the head well and works for fall or a mild winter.
Use the base pattern
For the classic hat, the source suggests making the hat double-layered and using a wedge pattern.
The classic version fits the head closely.Base pattern for a double-layer hat with wedges.
Stitch the wedge tops
Sew the tops of all wedges separately for the outer hat and for the lining.
Sew the back seam
After the wedges are sewn, stitch the back seam.
Join the outer hat and lining right sides together
Place the lining and outer piece right sides together, then stitch around. Leave a small opening on the back half for turning.
Turn and close the opening by hand
Turn the hat right side out and close the opening by hand with an invisible stitch.
Adjust the lining for a child’s hat
The same method can be used for a child’s hat, but for a better fit the source recommends a 4-wedge lining.
For a child’s version, the source recommends a 4-wedge lining.
Cuff and base-model variations
The last images in the source are shown as knit fabric hat ideas.
Make a cuffed hat
If you increase the height by 5–6 cm and make the lower part from contrast fabric, the same pattern becomes a cuffed hat. For a solid-color version, you can simplify it: fold the fabric in half right sides together, trace the pattern, and cut with 1 cm seam allowances. Then there is no seam along the bottom, and the cuff height can be adjusted.
Beanie
The source selection includes a classic beanie shape. Use it as a shape idea, not as a separate pattern.
Beanie idea from the source selection.
Hat with ears
Another option from the selection is a hat with ears in a medieval-inspired style.
Hat-with-ears variation.
Turban-style hat
The source shows the turban as inspiration. In the discussion, someone specifically asked about a twisted knit strip on top, but the article does not explain how to sew it on.
The turban is shown as inspiration, without step-by-step instructions.
Do not invent hidden steps
The source has no step-by-step turban instructions, so do not invent the twisted-strip construction.
Companion fabrics and decoration
A set made from companion fabrics with decoration can be sewn from the same base. From the discussion: a child’s hat can also be made from an old fleece jacket.
Decorated set variation.
Finish and variations
Finish
Check the fit, seams, and cuff
After turning, try the hat on: it should not feel scratchy, the seam should not stretch the fabric into waves, and the cuff should hold the chosen height.
Variations
Child’s hat from an old fleece jacket
From the discussion: a child’s hat can be made from an old fleece jacket. This is a separate upcycling idea; still take the measurements from the child.
Hat and snood set
The source includes a beginner video tutorial for a hat and snood; the text instructions for the snood are not repeated here because they are not in the original article.
The finished hat feels unpleasant against the skin.
Likely cause
The fabric was not tested for scratchiness before cutting.
How to fix it
Before sewing, hold the fabric against your neck or inner elbow. For sensitive skin, avoid scratchy brushed wool.
The hat became too small after washing
Problem
The finished item shrank after washing.
Likely cause
Natural wool or down shrank.
How to fix it
Before cutting, rinse the knit fabric in warm water, gently squeeze it out, and dry it flat. This lets you see shrinkage in advance.
The seam stretched the knit fabric
Problem
The seam became wavy.
Likely cause
The stretchy fabric was not stabilized.
How to fix it
Place a sheet of paper under the fabric, then remove it after stitching by dampening it slightly. A ballpoint or twin needle also helps.
The needle hits the shuttle
Problem
After adjustment, the needle does not move correctly.
Likely cause
The needle was lowered slightly, but the motion was not checked by hand.
How to fix it
Turn the handwheel manually and make sure the needle does not catch the shuttle before sewing with the machine.
The simple hat is too loose
Problem
The hat does not fit snugly.
Likely cause
The stretch of the knit fabric was not accounted for, or 3 cm was not subtracted from the head circumference.
How to fix it
For the rectangle version, the source subtracts 3 cm from head circumference: for example, 54 - 3 = 51 cm. Very stretchy fabric may need a larger stretch allowance.
?FAQ
What fabric works for a knit fabric hat?
For cold weather, the source suggests fleece, brushed wool, and blended fabrics with synthetic and wool fibers.
Should I wash the fabric before cutting?
The source recommends rinsing the knit fabric in warm water, gently squeezing it out, and drying it flat. This checks shrinkage and colorfastness.
What measurements do I need for the hat?
You need two measurements: head circumference and finished height. For head circumference, the tape runs through the middle of the ears and forehead without being pulled too tightly.
How do I calculate a simple no-pattern hat?
For the rectangle version, take head circumference and subtract 3 cm. In the example: 54 - 3 = 51 cm. For a winter hat with an 8–12 cm cuff, the source gives a 51 × 33 cm rectangle.
Can I sew it without a serger?
Yes. A serger and a ballpoint or twin needle make the work faster, but the source says you can manage with a domestic sewing machine.
Does the article include a turban hat pattern?
No. The turban is shown in the selection as an idea, and the discussion asked about the twisted strip on top. The original article does not include step-by-step instructions for that version.
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