What a loom does and why it works for hats

A knitting loom is a circular or rectangular frame with pegs around the edge. You wrap yarn around the pegs in a specific pattern, then use a tool to pull loops over each other. This creates knitted fabric without needles. For hats, a circular loom is fastest because the pegs form a tube as you work — you are building the hat's crown and sides in one continuous piece.

Looms are gentler on your hands than needles and harder to drop stitches on, which makes them good for beginners. A hat takes roughly two to four hours on a loom, depending on the yarn weight and how many pegs you use. Most hats need a loom with 24 to 40 pegs; smaller looms make tighter, smaller hats, and larger looms make looser, bigger ones.

Key Takeaways

  • A circular loom with 24 to 40 pegs works best for an adult hat; the number of pegs determines the hat's width.
  • Cast on by wrapping yarn around each peg once, then pull the bottom loop over the top loop on each peg to anchor the stitches.
  • Knit by wrapping yarn around all pegs in the same direction, then lifting the lower loop over the upper loop on each peg, row by row.
  • Decrease for the crown by skipping pegs as you wrap, moving inward until only a few pegs hold stitches, then pull yarn through to close the top.
  • Bind off by threading yarn through the remaining loops and pulling tight so the hat does not unravel.

Choosing the right loom size and yarn weight

Loom size is measured by the number of pegs and their spacing. A 24-peg loom makes a hat roughly 16 to 18 inches around (child to small adult); a 40-peg loom makes one 20 to 22 inches around (average adult). If you are unsure, measure the head you are knitting for and divide by 3.14 to get the diameter, then check the loom's packaging to see what finished width it produces.

Yarn weight matters because thicker yarn fills the loom faster and makes a denser, warmer hat. Worsted weight (medium thickness) is the easiest to work with on a loom and finishes in two to three hours. Bulky yarn is faster but can be harder to loop neatly; fingering weight takes longer and requires more rows. Start with worsted weight if you have not used a loom before.

Casting on and anchoring your first row

Casting on means putting the first loops on the pegs. Start by tying a knot at the end of your yarn and laying the loom flat in front of you. Peg 1 is your starting point — wrap the yarn around it from the inside of the loom, going clockwise (or counterclockwise; pick one and stay consistent). Wrap around every peg once, going all the way around the circle until you reach peg 1 again.

Now you have one loop on each peg. Take your loom hook (a small tool that comes with the loom) and, starting at peg 1, lift the bottom loop up and over the top loop, then let it drop off the peg. The top loop stays on the peg. Move to peg 2 and repeat all the way around. This anchors your stitches so they do not slip off as you work.

Knitting the body of the hat

Knitting on a loom is a repeating motion: wrap, then lift. Wrap the yarn around all the pegs in the same direction you cast on (clockwise or counterclockwise). Go all the way around until the yarn is back at peg 1. Now use your hook to lift the bottom loop over the top loop on peg 1, and let it fall off. Move to peg 2 and repeat. Keep going around the circle until every peg has had its bottom loop lifted over the top.

You have now completed one row. Wrap around all the pegs again in the same direction. Lift the bottom loop over the top on every peg again. This is the entire process — wrap, lift, wrap, lift. Each time you go around the circle is one row. Most hats need 30 to 50 rows before you start decreasing for the crown, depending on how tall you want the hat. A typical hat is 6 to 8 inches tall before the crown shaping begins.

Keep the tension even as you wrap — not so tight that the loops are hard to lift, and not so loose that they slip. If a loop does slip off a peg, use your hook to pick it back up and place it on the peg before you continue.

Decreasing to shape the crown

Once the hat body is tall enough, you start decreasing by skipping pegs. Instead of wrapping around every peg, wrap around every other peg (peg 1, skip peg 2, wrap peg 3, skip peg 4, and so on). Lift the bottom loop over the top on the pegs that have yarn. The empty pegs stay empty.

After one full round of every-other-peg wrapping, do another round the same way. Then decrease again by wrapping every third peg (wrap, skip, skip, wrap, skip, skip). Continue decreasing in this pattern — every other peg, then every third, then every fourth — until only 4 to 6 pegs have loops on them. The hat will start to bunch up and form a point at the top, which is correct.

Binding off and finishing the hat

When only a few pegs have loops, you are ready to bind off. Cut the yarn, leaving a tail about 6 inches long. Thread the tail through your loom hook. Starting at any peg with a loop, lift the loop off the peg and pull it through the hook. Move to the next peg with a loop, lift that loop off, and pull it through the loop you just removed. Keep going until all loops are off the pegs and threaded through each other. Pull the tail tight to close the top of the hat.

Weave the tail through the loops at the crown one more time to find it, then trim any excess. Turn the hat right-side out (if it is inside-out) and try it on. If the brim is too loose or too tight, you can gently stretch or shrink it by hand, or block it by laying it flat and pinning it to the shape you want, then letting it dry.

Adding a brim and finishing touches

A basic loom hat has a rolled edge at the bottom. If you want a flat brim, you can fold the bottom edge up and stitch it in place with a needle and thread, or you can pick up stitches from the cast-on edge and knit a few extra rows on needles to create a ribbed cuff. This takes an extra 30 minutes but makes the hat look more polished.

You can also add a pom-pom to the crown by wrapping yarn around your fingers 20 to 30 times, sliding it off, tying it in the middle, and fluffing it out. Sew it to the top of the hat with a needle and thread. Some people add a stripe by changing yarn colors mid-hat — just tie the new color to the old one and keep wrapping. The knot will be hidden inside the hat.

Frequently Asked Questions

What size loom do I need for an adult hat?

A 40-peg loom makes a hat about 20 to 22 inches around, which fits most adults. A 36-peg loom makes a slightly smaller hat. If you are knitting for a child, a 24 or 28-peg loom works better. Check the loom's package to see the finished width it produces.

How long does it take to knit a hat on a loom?

A basic hat in worsted-weight yarn takes two to four hours, depending on how tall you make it and how fast you work. Bulky yarn is faster; fingering weight takes longer. Your first hat will take longer than your second because you are learning the rhythm.

Can I use a rectangular loom instead of a circular one?

Yes, but you will have to seam the sides together at the end, which adds time and a visible line. Circular looms are faster for hats because the tube forms as you knit. Rectangular looms work better for scarves and blankets.

What do I do if I drop a stitch?

Use your loom hook to pick the loop back up and place it on the correct peg before you continue. If the dropped stitch has fallen several rows down, you may need to unravel back to that row and pick it up, or use a crochet hook to pull the loop back up through the rows below it.

Can I make the hat bigger or smaller by changing yarn weight?

Thicker yarn makes a looser, bulkier hat on the same loom; thinner yarn makes a tighter, denser one. If you want a significantly different size, use a different loom. A 24-peg loom with bulky yarn is not the same as a 40-peg loom with worsted weight.