The Ultimate Guide to Crocheting a Granny Square Tote Bag and Purse

There’s something deeply satisfying about carrying a bag you made yourself. When that bag is built from granny squares — those cheerful, colorful motifs that have lived at the heart of crochet tradition for generations — the satisfaction multiplies. Whether you’re a seasoned crocheter looking for your next meaningful project or a beginner ready to level up beyond scarves and dishcloths, a granny square tote bag or purse is one of the most rewarding things you can make with a hook and yarn.

This guide walks you through everything you need to know: the history behind the stitch, how to choose your materials, how to construct a bag from individual squares, how to finish it like a professional, and how to personalize it so the finished piece feels completely your own. By the time you reach the end, you’ll have a full roadmap for creating a bag that’s sturdy, stylish, and genuinely one of a kind.

A Brief History of the Granny Square

The granny square is one of those crafting elements so embedded in popular culture that it can be easy to forget it has a real history. The basic construction — working in rounds from a central ring outward, with clusters of double crochet stitches separated by chain-space corners — dates back to at least the late 19th century, when it appeared in Victorian needlework manuals as a way to use up leftover yarn scraps. Because fabric and fiber were expensive commodities, nothing went to waste, and small colorful motifs joined together were an economical way to create blankets, shawls, and household items.

By the 1960s and 1970s, the granny square had become a defining symbol of the counterculture handmade movement. Hippies wore them as vests and ponchos, carried them as bags, and stitched them into floor pillows. The aesthetic was deliberately imperfect and colorful — a rejection of mass production in favor of personal expression.

Today, the granny square is experiencing a full-blown renaissance. Contemporary designers are using them in runway fashion, interior design, and accessories. The traditional form has also evolved: there are solid granny squares, granny hexagons, granny triangles, and countless modern variations that move far beyond the classic multi-colored look. For bag making specifically, the granny square offers a natural structure that is both decorative and functional.

Why Make a Granny Square Bag?

Before diving into the how, it’s worth pausing on the why. Why choose a granny square construction for a bag rather than simply crocheting a bag in continuous rounds or rows?

The first reason is versatility. Granny squares can be made in any color combination, with any weight of yarn, and in any size. This means your bag can be a bold statement piece in contrasting colors or a subtle, sophisticated accessory in a single tonal palette. You have complete creative control at the most granular level.

The second reason is portability. Making the squares themselves is an ideal on-the-go project. You don’t need to carry your entire work-in-progress to the dentist’s waiting room — just a small ball of yarn, your hook, and the handful of squares you’re currently working on. The assembly happens at home when you have more space.

The third reason is structural integrity. When multiple layers of yarn-over-yarn fabric are joined together, the resulting material is thicker and more stable than a simple crocheted fabric. For a bag that needs to hold its shape and bear some weight, this is a genuine advantage.

Finally, there’s the community aspect. Granny square patterns are among the most shared, discussed, and adapted in the entire crochet world. Whatever question you have, someone in an online group or forum has already answered it. The collective knowledge base is enormous, and that makes troubleshooting much easier.

Choosing the Right Yarn

The yarn you choose will determine almost everything about the finished bag — its weight, durability, texture, and how it looks after repeated use. This is not the place to make a hasty decision.

For a tote bag that will carry groceries, library books, or a laptop, you want something substantial. Cotton yarn is the gold standard for bag making. It has almost no stretch, which means your bag will hold its shape rather than drooping under the weight of its contents. It’s also washable, which matters for something that will inevitably spend time on café floors and market tables. Worsted weight or bulky cotton works beautifully for a tote, giving you thick, solid fabric without requiring too many hours of work.

If you’re making a smaller purse rather than a full-sized tote, you have more flexibility. A fingering or DK weight cotton or cotton-blend yarn will give you a finer fabric with better drape. This is particularly nice if you’re incorporating a lining and want the crochet to feel more like textile than craft project.

Acrylic yarn is an option, particularly if you’re new to the craft and don’t want to invest heavily in an experimental first bag. Modern premium acrylics are soft, colorfast, and durable. The downside is that they stretch more than cotton, so you’ll want to add a lining and possibly an internal stabilizer to keep the bag’s shape over time.

Jute, linen, and hemp yarns are increasingly popular for bags and offer a natural, earthy aesthetic. They’re stiffer than cotton, which actually works in a bag’s favor, but they can be rough on the hands during the making process. If you go this route, consider a cotton-linen blend that gives you the best of both materials.

Whatever yarn you choose, buy more than you think you need. Running out of a discontinued colorway mid-project is one of the most frustrating experiences in crafting, and buying a little extra now costs far less than the heartache of an unfinishable project later.

Tools and Notions You’ll Need

Beyond yarn and a hook, a granny square bag project calls for a few additional supplies that are worth gathering before you begin.

A crochet hook sized appropriately for your yarn is obviously essential. Most cotton worsted yarns suggest a 5mm hook, but granny squares for bags often look better worked at a slightly tighter gauge — try going down half a size from your yarn’s recommendation to get a denser, more structured fabric.

Stitch markers are invaluable for keeping track of rounds, particularly when you’re working in a color that makes it hard to see individual stitches clearly.

A yarn needle with a blunt tip is needed for weaving in ends — and granny square projects produce a lot of ends. Plan for this. If you’re making a bag with 12 squares, each worked in three colors, that’s potentially 72 ends to weave in. Some crafters choose to crochet over their ends as they go to reduce this workload.

Fabric for lining is strongly recommended for any bag you plan to actually use. Quilting cotton is the classic choice: it comes in thousands of patterns, it’s easy to cut and sew, and it’s available at virtually every fabric store. If you don’t sew, iron-on fabric stiffener or a purchased bag insert can serve a similar stabilizing function.

Bag hardware — magnetic snaps, D-rings, swivel clips, and rivets — can elevate a homemade bag to something that looks genuinely professional. These are available inexpensively online and at craft stores. A magnetic snap closure, in particular, transforms a simple tote into a secure purse.

Leather or faux leather straps are worth considering as an alternative to crocheted handles if you want maximum durability and a modern aesthetic. They can be attached with Chicago screws, which require no sewing at all.

Understanding Granny Square Construction

The classic granny square starts with a magic ring or a small chain joined into a ring. From there, you work in rounds, building outward with clusters of double crochet stitches and chain spaces at each corner. The standard granny square is worked in rounds and produces a square with four distinct corner spaces.

A basic three-round granny square in worsted weight yarn on a 5mm hook will measure approximately 4 inches (10cm) across. This is a useful benchmark for planning your bag’s dimensions. A simple large tote might use a 4×4 grid of squares for each side panel, giving you a bag face that’s roughly 16 inches wide by 16 inches tall — a comfortable, generous size for a market bag or beach tote.

For a smaller structured purse, a 3×3 grid of squares per side, perhaps using a finer yarn or a smaller hook to reduce each square’s dimensions, is a good starting point.

The great thing about modular construction is that you can literally lay your squares on a table, play with the arrangement, and adjust the dimensions before committing to any joining. This is planning made tactile.

How to Join Granny Squares for a Bag

The joining method you choose affects both the appearance and the structural integrity of your bag, so it deserves careful thought.

The flat slip stitch join is the most invisible method. You hold two squares with wrong sides together and slip stitch through the back loops of both pieces simultaneously. The result is a nearly seamless join on the right side. It’s ideal for a bag where you want the squares to be the focal point without visible seams.

The flat single crochet join creates a subtle ridge on the right side of the work. Many crafters actually love this look — it adds texture and definition between the squares. For a boho or artisanal aesthetic, this join is a great choice.

The standing join, sometimes called the join-as-you-go method, involves attaching each new square to its neighbor during the final round of construction rather than sewing them together afterward. This eliminates the separate joining step entirely and can produce beautifully seamless results, though it requires planning ahead about color placement and working order.

For a bag specifically, consider reinforcing your joins at stress points — the bottom corners, the base of the handles, and anywhere two squares meet along the bag’s opening. A second pass of slip stitches or a small whip stitch with a yarn needle adds durability without affecting the appearance significantly.

Constructing the Bag from Squares

Once your squares are joined into panels, the assembly of the bag itself follows a logical sequence.

Start with two identical side panels joined at the bottom edge and two side seams. This creates the main body of the bag. For a tote, you can then add a crocheted base — either a rectangle of single or double crochet, or a grid of smaller squares — that gives the bag a flat bottom and helps it stand upright when filled.

For a boxed-bottom tote (the kind with that neat rectangular base that makes it easier to pack), join your side panels and then pinch the bottom corners and sew or crochet them flat before attaching the base. This creates depth and means the bag will stand on its own.

For the purse handles on a tote bag, a crocheted chain of 60 to 80 stitches covered in single crochet stitches creates a simple, sturdy strap. Working three or four rows of single crochet around the chain gives you a flat, comfortable handle. For reinforcement, run the strap through a D-ring at each end and fold it back, securing it with tight stitching through all layers.

For a clutch or small purse, consider a shorter strap or a chain loop, or forgo a strap entirely in favor of a wrist loop or chain.

Adding a Lining

A lining transforms the interior of your bag from raw crochet to something finished and functional. It prevents small items from falling through the gaps in the fabric, reduces stretch, and gives you a surface to which you can attach pockets, snap closures, and organizer panels.

To make a simple lining, measure your bag’s interior dimensions carefully — height, width, and depth. Cut your fabric pieces with a half-inch seam allowance on all sides, sew them together into a fabric “bag,” fold the top raw edge under, and slip the lining inside the crocheted bag with the wrong sides facing. Pin the lining to the crochet just below the bag’s opening and hand-sew it in place with a whip stitch or ladder stitch, catching only the inside surface of the crochet so the stitches don’t show on the outside.

If you want an interior pocket, sew it to the lining before inserting the lining into the bag. A simple rectangular pocket — sewn on three sides and left open at the top — takes about twenty minutes to make and dramatically improves the bag’s usability.

Color Theory for Granny Square Bags

Color is where granny square projects get genuinely fun, and also where the most common mistakes happen. A few guiding principles will help you make confident choices.

A monochromatic palette — one color in several shades from light to dark — is sophisticated and modern. It’s particularly effective for structured purses where you want the bag to feel polished rather than playful.

A complementary palette — colors opposite each other on the color wheel, like orange and blue or yellow and purple — creates maximum visual impact. If you want your bag to turn heads at the farmers market, complementary colors will do it.

An analogous palette — colors that sit next to each other on the color wheel, like coral, peach, and golden yellow — is harmonious and easy to wear with a wide variety of outfits. This is a safe, beautiful choice for an everyday bag.

The classic random multi-color granny square look, where every square uses different scrap yarn combinations, celebrates the stitch’s origins as a use-it-up tradition. This is the most forgiving approach for beginners because nothing has to match anything else.

One tip: lay all your yarn choices side by side before you begin and photograph them. Looking at a photo rather than the skeins themselves makes it much easier to assess whether the colors work together.

Finishing Touches That Make a Difference

The difference between a bag that looks homemade and a bag that looks handcrafted often comes down to finishing. These final details are worth taking time over.

Blocking your squares before assembly makes the joining process much easier and produces a more even finished fabric. For cotton, this means wetting the squares, pinning them to a foam mat in their target dimensions, and allowing them to dry flat. Even a quick spritz with a spray bottle and a gentle press with an iron through a damp cloth can make a significant difference.

Weaving in ends securely — going in one direction for several stitches, then doubling back — prevents them from working loose with use and washing. A small dot of fabric glue on the tip of a woven end adds an extra measure of security.

Pressing the finished bag gently with a steam iron gives the fabric a crispness that elevates the entire piece. Use a pressing cloth to protect the yarn.

If you’ve used leather straps or hardware, finish any raw leather edges with leather edge paint or beeswax conditioner for a truly professional result.

Care and Longevity

A well-made granny square bag can last for years with proper care. For cotton bags, machine washing on a gentle cycle in a mesh laundry bag is usually fine. Reshape while damp and dry flat to prevent distortion.

Store the bag stuffed with tissue paper or a small pillow insert when not in use. This prevents the sides from collapsing and creasing in ways that can be difficult to reverse.

If the bag develops any loose joins over time, a quick reinforcement stitch with matching yarn takes only a few minutes and prevents small problems from becoming large ones.

The Joy of the Process

Here’s something worth saying plainly: a granny square bag project is not just about the finished object. The process of making it — sitting with a cup of tea and a small pile of colorful yarn, working round after round of a cheerful motif, watching a pile of individual squares slowly become something you’ll carry into the world — is itself valuable.

Crochet has well-documented benefits for focus, stress reduction, and a sense of creative accomplishment. A project like this gives you dozens of small satisfactions along the way, not just the one big satisfaction at the end. Each finished square is a little victory. Each joined seam is progress. Each woven-in end is a completed chapter.

Whether you’re making this bag for yourself or as a gift for someone who will understand exactly how much time and care went into it, you’re participating in a tradition that stretches back through generations of crafters who found meaning and beauty in turning simple materials into something functional and lovely.

Pick up your hook. Choose your colors. Start that first ring. The bag you make will be unlike any other bag in the world — and that’s the whole point.