What a Japanese knot bag is and why you might make one

A Japanese knot bag is a small drawstring pouch made from a single rectangle of fabric, folded and tied at the corners so the knots form handles. You do not need a pattern, a sewing machine, or much fabric — most are made from scraps roughly 10 by 20 inches. The bag closes by pulling the drawstring tight, and the knots sit naturally in your hands when you carry it.

The appeal is speed and simplicity. A beginner can finish one in under an hour with hand-sewing alone. The construction uses only straight seams and a basic running stitch, so it is a good first project if you have never sewn before. The finished bag holds small items — a phone, keys, notions, a packed lunch — and the fabric knots are sturdy enough for regular use.

Key Takeaways

  • Cut a rectangle of fabric roughly 10 by 20 inches, fold it in half lengthwise, and sew two sides closed, leaving the top open.
  • Turn the bag right-side out through the opening, then fold the raw edges inward and sew them closed to finish the top.
  • Cut a drawstring from fabric or cord, thread it through a channel you sew near the top, and tie knots at both ends to form handles.
  • The entire project uses basic running stitch and takes one to two hours by hand, or 20 minutes with a machine.

Cutting and preparing your fabric

Start with a rectangle of fabric. The standard size is 10 inches wide by 20 inches long, but you can adjust this based on what you want to carry. A 10-by-20 rectangle makes a bag roughly 5 inches wide and 4 inches deep when finished. If you want something larger, add 2 inches to both dimensions; if smaller, subtract 2 inches.

Use any weight of fabric — cotton, linen, quilting cotton, or even old clothing work well. Avoid stretchy fabrics like knits unless you are comfortable working with them. If your fabric is wrinkled, press it flat with an iron before you begin. Lay the rectangle out in front of you with the right side (the side you want to show) facing down.

Sewing the side seams

Fold the rectangle in half lengthwise so the right sides face each other and the long edges line up. You now have a long, narrow double layer. Pin or hold the two long edges together.

Sew along one long edge using a running stitch — push the needle through both layers, then back up a short distance away (roughly 1/8 inch), then down again, repeating the motion. Keep your stitches small and even. Leave a 1/2-inch seam allowance (the distance between your stitches and the edge). Sew all the way to the corner, then sew along the short end (the bottom of the bag) and up the other long side. Stop about 2 inches from the top on the second long side — this opening is where you will turn the bag right-side out.

When you reach the end, tie off your thread by making a small knot on the inside and weaving the needle back through a few stitches before cutting the thread short.

Turning the bag and finishing the opening

Reach through the 2-inch opening and gently pull the fabric through until the bag is right-side out. The seams are now on the inside where they belong. Use a blunt tool like a chopstick or the back of a spoon to push the corners out so they are sharp and square.

Fold the raw edges of the opening inward by about 1/2 inch on both sides, and press them flat with your fingers or an iron. Pin the opening closed. Sew it shut using a running stitch, staying as close to the folded edge as you can. This seam will be visible on the outside, so try to keep your stitches even and small.

Adding the drawstring channel and threading the cord

Measure down about 1 inch from the top of the bag and mark a line all the way around using a pencil or fabric pen. Sew along this line using a running stitch, going all the way around the bag. This creates a channel between the line you just sewed and the top edge of the bag.

Cut a drawstring from fabric or use a length of cord. If you are using fabric, cut a strip about 1/2 inch wide and 24 to 30 inches long. Fold it in half lengthwise and sew it closed to make a thin cord, or straightforward use it as-is. If you are using store-bought cord, 24 to 30 inches is a good length.

Attach a safety pin to one end of the drawstring. Push the safety pin through the channel you sewed, working it around the entire bag until the drawstring comes back out where it started. Remove the safety pin. You now have a loop of drawstring running through the channel.

Tying the knots and finishing

Pull both ends of the drawstring so they are even. Tie a knot at each end, making the knots large enough that they cannot slip back through the channel. These knots form the handles of the bag.

Pull the drawstring tight to close the bag. The fabric will gather at the top, and the two knots will sit naturally in your hands when you pick it up. Trim any loose threads from the seams.

Your bag is now finished. You can adjust how tight it closes by pulling the drawstring, and you can open it fully by loosening the cord.

Variations and fabric choices

Once you have made one bag, you can experiment with different fabrics and sizes. Patchwork bags made from several fabric pieces sewn together before folding create a striped or block pattern. Lined bags use two layers of fabric sewn together before the main construction begins, which adds structure and hides the seams.

Heavier fabrics like canvas or denim hold their shape better and wear longer, but they are harder to sew by hand. Lighter fabrics like cotton voile or linen are easier to work with and create a softer, more flexible bag. Printed or patterned fabrics show off the knot detail more dramatically than solid colors.

Frequently Asked Questions

Can I make this bag on a sewing machine instead of by hand?

Yes. Use a straight stitch and a 1/2-inch seam allowance, just as you would by hand. A machine will finish the bag in about 20 minutes. Backstitch at the beginning and end of each seam to find the thread. The only step that requires hand-sewing is closing the turning opening if you prefer an invisible seam, though you can machine-sew it closed if you do not mind the visible stitches.

What size should I cut my fabric if I want a bigger bag?

Add 2 inches to both the width and length. A 12-by-22-inch rectangle makes a noticeably larger bag. Keep in mind that bigger bags are heavier to carry and require longer drawstrings — measure around the finished bag and add 4 inches to find the right drawstring length.

Can I use a drawstring that is not fabric?

Yes. Cord, ribbon, twine, or even yarn work well. The only requirement is that it slides smoothly through the channel and does not fray. Cord and ribbon are easiest to work with because they do not tangle.

What do I do if my stitches are uneven or loose?

Uneven stitches are normal on a first project and do not affect how the bag works. If stitches are loose enough that fabric is pulling through, you can reinforce them by sewing over the same seam a second time. If a seam tears during use, you can hand-sew it closed again using the same running stitch.

How do I keep the knots from coming untied?

Tie a double knot (one knot on top of another) at each end of the drawstring. You can also sew the knot in place by stitching through it a few times with needle and thread, which locks it permanently.