How to Sew a Laundry Bag: A Complete Tutorial with Free Pattern Guide
Whether you’re heading off to college, trying to keep a shared bathroom organized, or simply tired of buying flimsy mesh bags that fall apart after a season, sewing your own laundry bag is one of the most satisfying beginner sewing projects you can take on. It’s practical, customizable, and once you understand the basic construction, you can make them in every size imaginable — from a petite delicate-wash bag to a giant dorm-ready drawstring sack.
This tutorial walks you through everything you need to know: the best fabrics to use, how to take measurements, step-by-step sewing instructions, and tips for adjusting the pattern to suit your needs. By the end, you’ll have a durable, good-looking laundry bag you actually want to grab on laundry day.
Why Make Your Own Laundry Bag?
Store-bought laundry bags are everywhere, but they tend to share the same problems. The drawstrings fray or snap within a few months, the fabric is too thin to hold heavy loads, and they’re usually made in one generic size that works okay for some people and not at all for others. When you sew your own, you control every variable: the fabric weight, the bag dimensions, the type of closure, and the color or pattern.
There’s also something genuinely useful about understanding how a simple bag is constructed. Once you’ve sewn one laundry bag, you’ll see that the same basic technique applies to tote bags, pillowcases, shoe bags, and produce bags. You’re not just making a bag — you’re building a foundational skill set.
And if you’re looking for a handmade gift idea that’s thoughtful without being overly precious, a set of matching laundry bags is exactly the kind of thing a new college student, a traveler, or a new homeowner will actually use.
Choosing the Right Fabric
The fabric you choose will determine how long your bag lasts and how well it functions. Here are the most popular options:
Cotton Canvas or Duck Cloth is the gold standard for laundry bags. It’s sturdy, breathable, washable, and comes in a huge range of colors and prints. A medium-weight canvas (around 7 to 10 oz) is ideal — heavy enough to hold a full load without straining the seams, but not so stiff that it becomes difficult to work with on a home sewing machine.
Cotton Muslin works well if you want something lighter and less expensive. It’s a good choice for smaller delicate-wash bags or for a beginner who wants an affordable fabric to practice with. The downside is that muslin isn’t as durable, so these bags tend to have a shorter lifespan under heavy weekly use.
Nylon Ripstop is excellent for travel laundry bags. It’s lightweight, dries quickly, and packs down to almost nothing. The trade-off is that it can be slightly slippery to sew and doesn’t have the same cozy, handmade aesthetic that cotton offers.
Mesh Fabric is specifically worth considering if you want a bag you can throw directly into the washing machine with delicate items inside. It allows water and detergent to circulate freely while keeping small items contained. Mesh requires a bit more care during sewing because it can shift or fray at the edges, but a tight zigzag stitch or serged seam handles this well.
For this tutorial, medium-weight cotton canvas is the recommended fabric. It’s beginner-friendly, easy to find at any fabric store, and creates a bag that will hold up through years of weekly use.
Materials You’ll Need
Before you start cutting, gather everything together so the project goes smoothly from start to finish.
For a standard-sized laundry bag measuring approximately 18 inches wide by 24 inches tall (which holds a medium load comfortably), you’ll need about one yard of fabric. If you’re making a larger bag, pick up an extra half yard to be safe.
For the drawstring, you have a few choices. A cotton cord or rope measuring about ¼ inch in diameter and roughly 60 inches long works beautifully. You can also use nylon cord, a fabric ribbon, or a piece of twill tape. If you want a more refined finish, purchase ready-made cording from the notions section of any fabric store.
You’ll also need matching or contrasting thread, a hand sewing needle or bodkin (a thick blunt needle used specifically for threading drawstrings), fabric scissors or a rotary cutter and cutting mat, straight pins or fabric clips, a ruler or measuring tape, and a sewing machine with a standard straight stitch and a zigzag stitch capability.
Optional but helpful: a fabric marking pen or chalk for marking seam allowances and the drawstring casing line, and an iron and ironing board for pressing seams flat as you go.
Taking Measurements and Cutting Your Fabric
The beauty of this project is that the pattern is essentially a rectangle. No complex curves, no tricky set-in sleeves — just clean, straight lines that are easy to measure and cut.
For a standard bag, cut one rectangle measuring 38 inches wide by 28 inches tall. When the fabric is folded in half along the width, the bag will measure 19 inches wide by 28 inches tall before seaming. After you sew the seams and fold down the casing at the top, the finished bag will be roughly 18 inches wide by 24 inches tall.
If you want a smaller bag for delicates, cut a rectangle 26 inches wide by 22 inches tall. For an extra-large dorm bag that can hold multiple outfits, go with 50 inches wide by 36 inches tall.
Always add at least a half inch to one inch of extra length and width to account for seam allowances. This tutorial uses a half-inch seam allowance throughout, which is standard and easy to measure on most sewing machines using the throat plate markings.
Once you have your rectangle cut, take a moment to press it with your iron. Even with sturdy canvas, starting with a flat, crease-free piece of fabric makes everything easier.
Step-by-Step Sewing Instructions
Step One: Prepare the Fabric
Fold your fabric rectangle in half lengthwise, so the right sides (the printed or finished sides) are facing each other. The fold will become the bottom of your bag. Pin or clip the two open sides together along the raw edges, leaving the folded edge at the bottom intact. You should now have a rectangle that is folded in half, with two raw open sides — the left edge and the right edge — and one folded closed edge at the bottom.
Step Two: Mark the Drawstring Opening
Before you sew the side seams, you need to mark where the drawstring opening will be. On each side, measure down from the top raw edge approximately 2 inches and make a small mark with your fabric pen or chalk. This is where you’ll leave a gap in your stitching so the drawstring can pass through.
Step Three: Sew the Side Seams
Starting at the top raw edge of one side, sew downward using a straight stitch with a half-inch seam allowance. When you reach your 2-inch mark, backstitch to secure the thread, then stop and lift your presser foot. Move your fabric forward about 1 inch (this is your drawstring gap) and begin sewing again from there, continuing all the way down to the folded bottom corner.
Repeat on the other side. You should now have a tube-like shape with a gap near the top of each side seam.
Finish your seam allowances using a zigzag stitch along the raw edges, or if you have a serger, run each seam through the serger to prevent fraying. This step is important for longevity, especially for a bag that will be washed frequently.
Press the seams open with your iron.
Step Four: Reinforce the Drawstring Openings
Go back to each of those small gaps you left in the side seams. To reinforce them so they don’t pull and tear over time, use a seam ripper to carefully open the seam allowances on either side of the gap and press them flat. Then, using your sewing machine’s zigzag stitch or a short bartack, sew across the top and bottom of each gap a few times to secure the edges. This small step makes an enormous difference in how long the bag lasts.
Step Five: Create the Drawstring Casing
Lay your sewn bag flat with the top raw edge facing up. Fold the top edge down by a quarter inch toward the wrong side (the inside of the bag) and press it flat with your iron. This small fold prevents the raw edge from fraying inside your casing.
Now fold the top edge down again by 1.5 inches and press it flat. This creates the casing channel through which your drawstring will run. Pin or clip this fold in place all the way around.
Sew around the entire top of the bag close to the lower folded edge of the casing, about one-eighth of an inch from the fold. Then sew a second line of stitching about one-eighth of an inch from the top folded edge. You now have a finished casing channel with two parallel lines of topstitching and the drawstring opening at each side seam.
Step Six: Thread the Drawstring
This is the moment that feels the most satisfying. Cut your cording to about 60 inches (for a standard bag) and attach a safety pin or bodkin to one end. Feed the pin through one drawstring opening, work it all the way through the casing channel, and bring it out the opposite opening. Then feed the same end back into the opening it just came out of, run it through the second half of the casing, and bring both ends out through the same original opening.
When you pull on both ends, the bag should cinch closed. Tie a knot at the end of each cord to prevent it from slipping back through the casing.
Step Seven: Turn and Press
Turn the bag right side out, push the corners out fully with a blunt tool (a chopstick works perfectly), and give the entire bag a final press with your iron. Check all of your seams, make sure the casing sits flat, and test the drawstring by cinching and releasing it a few times.
That’s your finished bag.
Tips for Getting a Professional-Looking Result
Pressing every seam as you go is the single biggest thing you can do to make your bag look store-quality rather than homemade. Many beginners skip ironing because it feels like an interruption, but it genuinely changes how the finished piece looks.
Cut carefully and accurately. Because this bag has so few pieces and so few seams, any small cutting error will show up in the finished product. Take your time with the cutting stage, measure twice, and use a rotary cutter and cutting mat if you have one.
Sew slowly through the thick layers at the corners and along the top casing, especially if you’re working with canvas. Forcing your machine through thick fabric too quickly can result in skipped stitches or a bent needle.
If you want to add a label or personalize the bag, do it before you sew the side seams. An iron-on label, an embroidered name, or even a fabric paint design is much easier to apply to a flat piece of fabric than to a finished bag.
Pattern Variations to Try
Once you’ve sewn the basic version, there are several easy modifications worth trying.
A two-cord drawstring uses two separate cords instead of one. Thread one cord from the left opening all the way around the casing and back out the left opening, and a second cord from the right opening all the way around and back out the right. The two cords pull in opposite directions, creating a tighter, more secure closure. This style is especially useful for bags that will be carried over a shoulder.
A lined laundry bag adds an inner layer of fabric, which makes the bag much more polished and helps it hold its shape. Cut two rectangles instead of one, sew them right sides together around all edges except for a turning gap, turn right side out, and press. Then proceed with the casing and drawstring as described above.
A flat bottom construction gives the bag more volume. After sewing the side seams, pinch each bottom corner flat so the side seam aligns with the bottom fold, creating a triangular point. Sew straight across this triangle about 2 to 3 inches from the tip, then trim the excess. When you turn the bag right side out, the bottom will be flat and boxy rather than rounded.
Adding an exterior pocket is another popular upgrade. Cut a smaller rectangle of coordinating fabric, hem the top edge, and baste the remaining three sides to the front panel of the bag before you sew the side seams. The pocket gets sewn into the seams automatically, and you end up with a useful exterior pouch for detergent pods, dryer sheets, or quarters for the laundromat.
Caring for Your Handmade Laundry Bag
A canvas laundry bag can be washed in cold or warm water on a normal cycle. To prevent any initial shrinkage from distorting the shape, prewash your fabric before you cut and sew it. This is especially important with cotton, which can shrink significantly on the first wash.
Dry on a low heat setting or hang to dry. High heat will wear out the cording faster and can cause the bag to shrink unevenly if the fabric wasn’t prewashed.
If the drawstring ever starts to fray at the ends, just trim back the frayed section, re-knot, and you’re back in business. Because you made the bag yourself, you know exactly how it was constructed and you can repair any part of it easily.
Final Thoughts
A handmade laundry bag is exactly the kind of project that reminds you why sewing is worth learning in the first place. It’s quick — most people finish one in under two hours — it’s genuinely useful, and it requires nothing more than basic straight-line sewing skills. The pattern is a single rectangle. The construction is logical and forgiving. And the result is something durable enough to use every single week for years.
Whether you’re sewing your first project ever or you’re an experienced maker looking for a quick and practical make, this is a project worth returning to. Make one for yourself, adjust the dimensions to suit your space, and then make a few more as gifts. Once you’ve mastered the basic version, the variations are limited only by the fabrics you fall in love with at the fabric store.
Happy sewing.
