A cat hat is a small, fitted cap you knit in the round using basic stitches and decreases

A cat hat sits snugly on a cat's head with two ear holes or ear flaps sticking up. You knit it from the bottom up using circular needles or double-pointed needles, working in stockinette stitch (knit every round) until the hat reaches the cat's ears, then you decrease stitches to shape the crown. Most cat hats take 2 to 4 hours to complete and use worsted-weight yarn in a single color, though you can add stripes or a chin strap if you want.

The finished hat should measure about 5 to 6 inches around the head for an average adult cat. Kittens need smaller hats (3 to 4 inches), and large breeds like Maine Coons need larger ones (7 to 8 inches). The best way to know your cat's size is to wrap a soft measuring tape around their head just above the ears, then add half an inch for comfort.

Key Takeaways

  • Measure your cat's head circumference above the ears, then add half an inch to find the finished hat size.
  • Cast on 32 to 40 stitches depending on your yarn weight and cat size, then knit in the round using circular or double-pointed needles.
  • Work stockinette stitch (knit every round) for 2 to 3 inches, then begin decreasing stitches to shape the crown.
  • Create ear holes by binding off 4 to 6 stitches on opposite sides of the hat before you start decreasing.
  • Weave in ends and try the hat on your cat in short sessions to check the fit before you commit to wearing it.

Choosing yarn weight and needle size

Worsted-weight yarn (also called medium or #4 weight) is the easiest choice for a beginner cat hat because it knits quickly and shows your stitches clearly. Acrylic yarn works well because it is washable, affordable, and comes in many colors. You need only 50 to 100 yards total, so you can use leftover yarn from another project.

Match your needle size to your yarn label. Most worsted-weight yarn calls for US size 7 to 9 needles. If you use circular needles, choose a 16-inch length so the stitches fit comfortably without stretching. If you prefer double-pointed needles, buy a set of four or five needles in the same size. Both methods work equally well for a hat this small.

Casting on and setting up the round

Cast on 32 stitches for a small cat (3 to 4 inches finished), 36 stitches for a medium cat (5 to 6 inches), or 40 stitches for a large cat (7 to 8 inches). Use the long-tail cast-on method, which creates a neat, stretchy edge that sits comfortably on a cat's head.

Join your cast-on stitches into a circle without twisting. If you are using circular needles, slip the working yarn onto the needle and knit the first stitch to close the loop. If you are using double-pointed needles, distribute the stitches evenly across three or four needles, then knit the first stitch with the fourth needle. Place a stitch marker after the first stitch to mark the beginning of each round.

Knit one round plain to find the join, then begin your pattern. This first round should feel loose and straightforward—if your stitches are tight, your hat will be uncomfortable for your cat.

Knitting the body and creating ear holes

Knit in stockinette stitch (knit every round) for 2 to 3 inches, depending on how tall you want the hat to sit on your cat's head. Count your rounds by marking every tenth round with a safety pin or scrap yarn so you do not lose track.

When you reach the height you want, create the ear holes. On the next round, knit to the first ear position (usually at the side of the hat, about 8 to 10 stitches from your stitch marker). Bind off 4 to 6 stitches, then knit to the opposite side of the hat and bind off another 4 to 6 stitches. This leaves two openings where your cat's ears will poke through.

On the following round, cast on new stitches above each bind-off to close the gaps. Use the backward-loop cast-on method, which is fast and creates a neat edge. You now have two ear holes and can continue decreasing to shape the crown.

Decreasing to shape the crown

Decrease stitches evenly around the hat to taper it toward the top. The most common method is to knit 2 stitches together (k2tog) at regular intervals. For a hat with 36 stitches, decrease 6 stitches per round by knitting 2 together every 6 stitches. For 40 stitches, decrease every 5 stitches.

Decrease every other round until you have 12 stitches left on your needles. Then decrease every round (knit 2 together around) until 6 stitches remain. Cut your yarn, thread it through the remaining stitches with a tapestry needle, and pull tight to close the crown. Weave the tail to the inside of the hat.

The decreases should feel gradual and even. If you decrease too quickly, the crown will pucker. If you decrease too slowly, the hat will be floppy at the top.

Finishing and fitting the hat

Weave in all loose ends using a tapestry needle, working them along the inside edge of the hat so they do not show. Gently block the hat by laying it flat on a towel and shaping it to the right size, then let it dry. Blocking is optional but helps the hat hold its shape.

Try the hat on your cat in short sessions—most cats tolerate a hat for only a few minutes at first. Slip it over their head gently and make sure the ear holes align with their ears. The hat should sit snugly without sliding down or pinching. If it is too loose, you can add a chin strap by crocheting or knitting a short cord and sewing it under the chin, or you can unravel and reknit with fewer cast-on stitches.

Never force a hat onto a cat or leave it on for longer than they are comfortable. Some cats enjoy wearing hats for photos; others will shake them off when ready. Both reactions are normal.

Common mistakes and how to avoid them

The most common mistake is casting on too many stitches, which makes the hat too large and loose. Measure your cat carefully before you start, and remember that a snug fit is better than a loose one—a loose hat will slip over your cat's eyes or fall off entirely.

Another frequent problem is twisting the stitches when you join the circle. Before you knit the first round, lay your cast-on stitches flat and make sure they all face the same direction around the needle. A twisted join creates a spiral seam that looks uneven.

Tight tension in the crown decreases can also cause puckering. Keep your tension even and consistent throughout the decrease rounds. If you notice the crown bunching, you may be pulling too hard when you knit 2 together.

Frequently Asked Questions

Can I knit a cat hat without circular needles?

Yes. Double-pointed needles work just as well for a small hat. Distribute your cast-on stitches evenly across three needles, then use the fourth needle to knit. The technique is the same; only the needle style changes. Some knitters find double-pointed needles easier for small projects because they are shorter and lighter.

What if my cat's ears are very large or very small?

Adjust the size of your ear holes to match your cat's ears. Large ears need larger holes (bind off 6 to 8 stitches instead of 4 to 6). Small ears need smaller holes (bind off 2 to 4 stitches). You can also move the ear holes higher or lower on the hat by changing when you bind them off.

How do I add stripes or a pattern to the hat?

Change yarn colors every few rounds to create horizontal stripes. Carry the unused color loosely up the inside of the hat, or cut and rejoin each time you switch colors. For a beginner, horizontal stripes are much easier than colorwork patterns. Vertical patterns require more advanced techniques like intarsia or Fair Isle.

Can I make a hat with a chin strap?

Yes. After you finish the hat, pick up stitches along the inside edge below each ear hole and knit a short I-cord (a thin tube) about 3 to 4 inches long. Sew both ends together under the chin. An I-cord is made by knitting 4 stitches on a double-pointed needle, sliding them to the other end without turning, and repeating until the cord is long enough.

How long does a cat hat take to knit?

A straightforward hat in worsted-weight yarn takes 2 to 4 hours for a beginner, depending on your speed and experience. Experienced knitters can finish one in 1 to 2 hours. The time includes casting on, knitting the body, decreasing the crown, and weaving in ends, but not blocking.