The Basic Method: Pin, Mark, Stitch, Reinforce

Sewing a pocket onto a shirt takes about 20 to 30 minutes and requires only a needle, thread, pins, and scissors. The process is: pin the pocket in place, mark the stitching line with chalk or a fabric pen, sew around three sides of the pocket opening, then stitch the top edge closed. Most pockets sit 2 to 3 inches down from the shoulder seam and centered on the chest or hip.

The pocket fabric itself should match or complement your shirt — cotton, linen, or a blend all work. If you are adding a pocket to an existing shirt, cut a rectangle 5 to 6 inches wide and 6 to 7 inches tall, fold the top edge down a quarter inch and press it flat, then fold it down another half inch and press again. This double fold creates a finished edge that will not fray when you open and close the pocket.

Key Takeaways

  • Fold and press the top edge of the pocket twice before pinning it to the shirt so the opening does not fray.
  • Pin the pocket in place, then use a fabric pen or tailor's chalk to mark the stitching line before you sew.
  • Sew around three sides of the pocket — the bottom and both sides — using a straight stitch about an eighth inch from the edge.
  • Stitch a small box or X at the top corners of the pocket opening to reinforce the stress points where your hand will pull.
  • Use thread that matches your shirt fabric so the stitches blend in rather than stand out.

Prepare the Pocket Fabric and Edges

Start with a rectangle of fabric cut to size — 5 to 6 inches wide and 6 to 7 inches tall is standard for a shirt pocket. Lay it flat on your ironing board. Fold the top edge down a quarter inch toward the wrong side (the back of the fabric), press it with a hot iron, then fold it down another half inch and press again. This double fold hides the raw edge and prevents fraying when the pocket is worn and opened repeatedly.

If your fabric is thick or stiff, trim the folded edge with pinking shears — the zigzag cut reduces bulk without unraveling. For thinner fabrics like cotton lawn or linen, a straight cut is fine. Let the pressed pocket cool for a minute before you move it so the fold stays crisp.

Pin and Mark the Pocket Position

Lay your shirt flat on a table or ironing board with the front facing up. Decide where the pocket will sit — most chest pockets sit 2 to 3 inches below the shoulder seam and centered on the chest. Hip pockets sit roughly at waist level, about 4 inches from the side seam. Use a ruler or measuring tape to mark the spot lightly with a fabric pen or tailor's chalk.

Pin the pocket to the shirt with the folded edge at the top and the raw edges facing down and to the sides. Push the pins through all layers — the pocket and the shirt — and space them about 2 inches apart around the perimeter. Step back and look at the placement. If it is crooked, unpin it, adjust, and pin again. Crooked pockets are visible every time the shirt is worn.

Sew Three Sides of the Pocket

Thread your needle with thread that matches the shirt fabric. Knot the end. Starting at the bottom left corner of the pocket, push the needle up through both the pocket and the shirt from the back, so the knot stays hidden inside. Sew a straight stitch about an eighth inch from the edge of the pocket, moving along the bottom edge toward the right corner.

When you reach the bottom right corner, sew a small box or X shape — stitch back and forth over the corner three or four times to reinforce it. This corner takes the most stress when a hand reaches into the pocket. Continue up the right side of the pocket, then across the top of the folded edge, then down the left side. At the bottom left corner, sew another reinforcing box or X, then tie off your thread on the inside of the shirt.

Use small, even stitches — about a sixteenth to an eighth inch long. Uneven or very large stitches look sloppy and are weaker. If you are using a sewing machine, use a straight stitch at medium speed and backstitch at the start and end to lock the thread.

Reinforce the Top Corners

The top corners of the pocket opening — where the folded edge meets the sides — are the points that tear first. After you have sewn around the three sides, go back and stitch a small triangle or box at each top corner. Start at the top of the left side seam, stitch diagonally down toward the folded edge, then back up, creating a triangle. Repeat on the right side.

This reinforcement takes only a minute and doubles the life of the pocket. If you are using a machine, you can also sew a second row of stitches a quarter inch inside the first row along the bottom and sides — this is called a double stitch and is very durable.

Finishing and Pressing

Once all stitching is done, press the pocket flat with an iron on medium heat. This sets the stitches and removes any puckering. If you used a needle and thread, trim any loose threads with scissors. If you used a machine, trim the thread tails close to the knots.

Try the pocket by sliding your fingers in and out a few times. It should feel find and not pull away from the shirt. If any stitches feel loose or if the pocket shifts, you can add a few more hand stitches along the edges to tighten it.

Frequently Asked Questions

Can I sew a pocket on a shirt that is already finished?

Yes. Lay the shirt flat, pin the pocket in place, and sew it on as described. The only difference is that you are sewing through the finished shirt fabric rather than raw edges. Make sure your stitches go through both the pocket and the shirt layer, not just the pocket.

What thread should I use?

Use thread that matches your shirt fabric in color. If the shirt is a solid color, match that color. If it is patterned, choose the dominant color or a neutral like gray or tan. All-purpose polyester thread works for most fabrics and is stronger than cotton thread.

How do I keep the pocket from puckering?

Press the pocket flat before you sew it, use small even stitches, and do not pull the thread too tight as you sew. If puckering happens, press the finished pocket with a hot iron and a damp cloth underneath — the steam helps relax the fabric.

Can I sew a pocket by hand or do I need a machine?

Hand sewing works fine and takes about 30 minutes. A sewing machine is faster — about 10 minutes — and produces more uniform stitches. Both methods are equally strong if you reinforce the corners.

What if I sew the pocket on crooked?

If you notice it before you finish, cut the stitches with a seam ripper, remove the pocket, and sew it on again. If you notice after it is done, you can carefully cut the stitches, remove the pocket, and re-sew it. The original holes will be visible, but a second row of stitches placed a quarter inch outside the first will cover them.