How to Knit a Hat — Beginner Pattern With Circular or Straight Needles

Learning how to knit a hat is one of the fastest ways to finish a useful project as a beginner. A basic beanie uses only knit, purl, and simple decreases. You can work in the round on circular needles or flat on straight needles and seam the back. This pattern fits an average adult head (21–23 inches) with worsted-weight yarn.

Materials and Tools

• Worsted-weight yarn (Category 4): about 150–200 yards for an adult hat
• Needles: US size 8 (5 mm) — 16-inch circular for in-the-round, or straight needles if seaming
• Stitch marker (for circular knitting)
• Tapestry needle for weaving ends and seaming
• Scissors
• Optional: row counter or app

Check your yarn label for recommended needle size and adjust if your gauge is tight or loose.

Step 1: Make a Gauge Swatch (Optional but Helpful)

Cast on 20 stitches and knit stockinette (knit one row, purl one row) for 20 rows. Measure how many stitches fit in 4 inches. Most worsted hats aim for 18–20 stitches per 4 inches. If you have fewer stitches, go down a needle size; if more, go up.

Skipping gauge is fine for a first hat—expect the fit to vary slightly.

Step 2: Cast On

For an adult beanie, cast on 80–96 stitches depending on yarn and head size.

• Smaller head (child): 72–80 stitches
• Average adult: 88 stitches
• Large adult: 96 stitches

Use the long-tail cast-on for a stretchy edge. Leave a tail at least three times the width of the cast-on edge for weaving later.

Step 3: Join and Knit the Brim

In the round (circular needles)

1. Place a stitch marker on the right needle to mark the start of the round.

2. Join carefully so stitches are not twisted.

3. Knit 1, purl 1 around for 1.5–2 inches (about 12–16 rounds) for a ribbed brim.

Flat (straight needles)

Work the same rib pattern back and forth for 1.5–2 inches, then continue to the body in stockinette.

Step 4: Knit the Body

After the brim, knit every round (or every right-side row if flat) until the hat measures 6–7 inches from the cast-on edge to the needles.

Try the hat on by sliding it onto the needle tips (be careful not to drop stitches). It should cover the ears and sit where you want the brim to fold.

Step 5: Shape the Crown With Decreases

Place markers every 8 or 12 stitches around the hat, depending on your stitch count.

Decrease round: Knit to 2 stitches before each marker, knit two together (k2tog), slip marker. Repeat around.

Knit one plain round between decrease rounds until only 8–12 stitches remain.

Common decrease rhythm: decrease every other round until the opening is small, then every round for the last few decreases.

Step 6: Bind Off and Finish

1. Cut yarn, leaving a 12-inch tail.

2. Thread tail through remaining stitches with a tapestry needle; pull tight to close the crown.

3. Weave in all ends on the inside.

4. If you knit flat, mattress-stitch the back seam from brim to crown.

Block lightly by hand-washing in cool water, squeezing (not wringing), and drying flat if you want smoother stitches.

Troubleshooting

| Problem | Fix |

|--------|-----|

| Hat too tight | Cast on more stitches or use larger needles next time |

| Hat too loose | Fewer cast-on stitches or smaller needles |

| Ladder gaps at joins (circular) | Pull the second stitch on each new round slightly snugger |

| Twisted cast-on when joining | Rip back and rejoin with all stitches facing the same way |

| Uneven decreases | Count stitches before each decrease round |

| Yarn ends popping out | Weave at least 2 inches in two directions inside the fabric |

FAQ

How long does it take to knit a hat?

Most beginners finish a simple beanie in 6–12 hours of knitting spread over a few evenings. Experienced knitters often complete one in an evening.

Can I knit a hat on straight needles?

Yes. Knit flat in stockinette, then seam the side and gather or seam the top. Circular needles in the round avoid a back seam.

What yarn is best for a first hat?

Worsted-weight acrylic or wool blend is affordable, easy to see, and forgiving. Avoid fuzzy novelty yarn until you are comfortable with basic stitches.

How do I know when the hat is long enough?

Measure from cast-on to needles. Most adult beanies need 7–8 inches before decreases, including brim, so the hat covers the forehead and ears.

Why does my stockinette curl?

Stockinette naturally curls at edges. A ribbed brim and hat shaping fix this in a beanie. For flat swatches, add a garter or rib border.

The Takeaway

To knit a hat, cast on 80–96 stitches, rib the brim, knit the body to 6–7 inches, decrease evenly at the crown, and bind off. Circular needles give a seamless finish; straight needles work with a side seam. Check fit as you go, weave ends cleanly, and your first beanie will be wearable—not perfect, but yours.