15 FREE Granny Square Bag Patterns – Celtic Knot Crochet
There is something endlessly satisfying about turning a stack of colorful granny squares into a finished bag that you can actually carry out the door. The granny square has been a staple of crochet culture for generations, and its ability to combine with other motifs — especially the intricate, interlocking look of Celtic knotwork — has given it an entirely new life in modern pattern design. Whether you are a beginner looking for a first project or an experienced crocheter wanting to stretch your skills, these free granny square bag patterns offer something for everyone.
This collection focuses on patterns that are either fully free or have a free version available, so you can get started without spending a dime. Let’s dive into the world of Celtic knot crochet and the beautiful bags it can produce.
Why Granny Square Bags Are Having a Major Moment
You only need to spend five minutes scrolling through any fiber arts community to notice that granny square bags are everywhere right now. They have moved far beyond the stereotype of dusty vintage afghans and into high fashion territory, with major designers referencing crochet patchwork in their runway collections year after year.
The granny square bag is popular for several very practical reasons. First, the construction is modular, meaning you can crochet individual squares during small pockets of time — on your lunch break, during a commute, or while watching television — and then assemble them into a bag when you have more space and focus. Second, the format is incredibly forgiving. A slight tension difference from one square to the next creates texture and character rather than a flaw. Third, you can mix and match yarn weights, colors, and even fiber types within the same project to use up your stash while creating something cohesive and beautiful.
When you add Celtic knotwork to the mix, the result is elevated even further. Celtic knot motifs are based on interlaced, continuous lines that historically appeared in illuminated manuscripts, carved stonework, and metalwork throughout Ireland, Scotland, Wales, and the broader Celtic world. In crochet, these patterns are typically achieved through techniques like tapestry crochet, overlay crochet, or cleverly placed color changes that create the illusion of lines weaving over and under each other. The visual complexity is high, but many Celtic knot crochet patterns break the technique down into manageable steps that make the result achievable for intermediate crocheters.
What to Look for in a Free Granny Square Bag Pattern
Before we get into the patterns themselves, it is worth talking about what makes a pattern worth your time. Not all free patterns are created equal, and knowing what to look for will save you frustration.
A good free pattern includes a clear materials list with specific yarn weights and hook sizes. It also specifies the finished dimensions of each granny square and the finished size of the bag, because assembling 20 squares when you needed 24 is a deeply discouraging experience. Stitch counts and row counts at each stage are also signs of a well-tested pattern. Photos of the finished project from multiple angles help you understand how the pieces connect and what the lining or strap situation looks like.
For Celtic knot patterns specifically, look for a pattern that includes a clear chart or diagram in addition to written instructions. Celtic knotwork is inherently visual, and trying to follow the thread of an interlaced design from text alone is genuinely difficult. Color-coded charts make a huge difference.
The 15 Free Granny Square Bag Patterns
1. The Classic Celtic Knot Granny Square Tote
This is the gateway pattern for anyone who wants to combine these two beloved traditions. The design features a traditional four-corner granny square construction with a single Celtic knot worked in a contrast color at the center using overlay crochet. The technique places surface stitches over the base fabric to create the raised, interlaced appearance of knotwork without requiring colorwork within the round itself. The finished tote uses twelve squares joined with a flat slip-stitch seam and is large enough to hold a laptop or a week’s worth of grocery shopping. Look for this pattern on Ravelry or through the Celtic Knot Crochet website, where the designer often releases seasonal free patterns.
2. The Celtic Patchwork Market Bag
Market bags are one of the most useful things you can crochet, and this design proves that utility does not have to sacrifice beauty. The pattern uses a mix of solid-color granny squares and squares featuring a simplified Celtic plait motif worked in two colors. The plait is slightly easier to execute than a full knot because the lines travel in a more predictable path, making it a great starting point if Celtic knotwork is new to you. The bag has an open mesh base and stretchy handles, so it expands beautifully to hold produce, books, or beach essentials.
3. The Mini Celtic Knot Crossbody
Small bags have enormous charm, and this crossbody pattern proves it. The finished bag is made from just four large granny squares — two for the front, two for the back — each featuring a bold Celtic knot in a single contrast color against a neutral background. The designer recommends cotton yarn for structure, and the finished bag measures roughly nine inches wide by seven inches tall, which is the perfect size for a phone, wallet, and keys. The adjustable strap is made from a long crocheted chain reinforced with slip stitches, and the pattern includes an optional zippered lining tutorial as a free bonus.
4. The Bohemian Celtic Patchwork Shoulder Bag
This pattern leans into the eclectic, free-spirited aesthetic that makes crochet bags so personal. It calls for granny squares in four different sizes, some featuring Celtic knotwork and some featuring traditional raised petal or shell designs, all assembled in a slightly irregular patchwork arrangement that gives the finished bag a rich, layered texture. The color palette in the sample is earthy and warm, but the designer explicitly encourages you to interpret it however suits your own yarn collection. The bag closes with a large wooden button and a crocheted loop, which adds a beautiful handmade detail.
5. The Celtic Knot Bucket Bag
The bucket bag silhouette has been a fashion staple for years, and this crochet interpretation is stunning. The body of the bag is constructed from a ring of eight granny squares, each featuring a circular Celtic knotwork motif that works beautifully with the rounded shape. The base is a crocheted circle rather than a square, which provides stability and helps the bag keep its shape. Drawstring handles made from twisted cord complete the look. This pattern is slightly more advanced than the others because the circular base requires careful increases to lie flat, but the designer provides a row-by-row breakdown that makes it manageable.
6. The Celtic Interlace Clutch
Clutches are underrepresented in the crochet world, which is a shame because they are fast to make and wonderful to carry. This pattern uses six small granny squares featuring a Celtic interlace design — a simplified version of the classic knot in which two lines cross and recross in a regular rhythm — in a 3×2 grid to form the body of the clutch. The bag folds in half and is joined along the sides, with a long folded flap at the top that tucks down and fastens with a magnetic snap. The pattern includes instructions for a simple fabric lining, which keeps small items from slipping through the stitches.
7. The Oversized Granny Square Beach Bag
This is a pattern for those who love maximum impact with minimal joining. Rather than assembling many small squares, the designer teaches you to make one enormous granny square — roughly 20 inches across — and use it as the body panel of a beach bag. Each side of the bag is a single large square with a Celtic knotwork border worked in the final rounds using surface slip stitch. The two panels are joined with a decorative whipstitch in a contrast color, and the handles are wide flat bands crocheted separately and sewn on. This bag holds an extraordinary amount and looks like a genuine statement piece.
8. The Mosaic Celtic Granny Square Satchel
Mosaic crochet is a technique that achieves colorwork effects by working with only one color per row and using long stitches or color placement to create the illusion of a more complex design. This satchel pattern uses mosaic-style Celtic knotwork squares to create a structured bag with a flap closure and an interior pocket. The result is a bag with all the visual richness of intarsia colorwork but with none of the complexity of carrying multiple yarns at once. The pattern is detailed and thorough, with multiple photographs showing the construction process at each stage.
9. The Tapestry Crochet Celtic Knot Bag
For crocheters who are comfortable with tapestry technique — carrying two yarns at once and working over the unused color — this bag offers breathtaking results. Each granny square features a full Celtic knot worked in tapestry crochet, with the background and the knotwork in strongly contrasting colors. The finished bag has a structured, almost architectural quality, because the double strand of yarn in each stitch creates a dense, stiff fabric that holds its shape without a lining. This is an advanced pattern, but the designer provides a video tutorial as a free companion to the written instructions.
10. The Floral Celtic Granny Square Bag
This pattern beautifully bridges the traditional granny square aesthetic — with its floral center rounds — and the Celtic knotwork border that surrounds each motif. The granny squares begin with a classic puff stitch flower at the center, then transition into a Celtic braid border in the final two rounds using a carefully sequenced set of front-post and back-post stitches that create the raised interlaced look. Twelve of these squares are joined into a simple rectangular bag with a drawstring closure. The pattern comes in three color variations, and the free version includes all three colorways in the downloadable file.
11. The Celtic Sampler Tote
A sampler bag is one of the most satisfying projects to complete because every square is a small adventure. This pattern includes instructions for six different Celtic knotwork granny square designs — from a simple two-strand plait to an elaborate triquetra knot — and then assembles them in a 4×3 grid into a large, structured tote bag. Because each square is unique, the project never becomes repetitive, and the finished bag is a genuine showcase of skill. The pattern uses one neutral background color throughout to keep the varied motifs cohesive, while the knotwork itself can be worked in any color you choose.
12. The Celtic Knot Granny Square Backpack
Yes, you can crochet a backpack, and this free pattern proves it is not as complicated as it sounds. The body of the bag is constructed from granny squares featuring a bold diamond-shaped Celtic knot motif, assembled in a cylindrical shape with a crocheted base. The top is gathered with a crocheted channel and drawstring, and the straps are long crocheted bands reinforced with a row of slip stitches for durability. The pattern includes modifications for making a smaller version suitable for children.
13. The Heritage Celtic Bag
This pattern draws direct inspiration from the carved knotwork found on standing stones and ancient monuments in the Celtic world. The squares feature more geometric, angular knotwork compared to the flowing designs in some of the other patterns on this list, giving the finished bag a bold, graphic quality. The designer recommends a chunky weight yarn for speedy construction, and the entire bag can be finished in a single weekend. The hardware — two large D-rings and a swivel hook — give the finished bag a polished, professional look.
14. The Ombre Celtic Granny Square Tote
Color is one of the most powerful tools in crochet, and this pattern uses an ombre or gradient effect across the granny squares to create movement and depth in the finished bag. Each square features the same Celtic knotwork motif, but the background color shifts gradually from deep navy at the base of the bag to pale lavender at the top. The knotwork is worked in a consistent metallic gold throughout all squares, which ties the gradient together beautifully. The pattern includes a color planning guide to help you achieve the gradient effect using any color combination you choose.
15. The Everyday Celtic Granny Square Bag
The final pattern on this list is perhaps the most practical of all. It is designed to be a true everyday bag — spacious enough for a full day’s worth of essentials, durable enough for daily use, and beautiful enough to receive compliments from strangers. The construction uses a double-layer panel approach, with each panel made from a 3×3 grid of granny squares featuring a repeating Celtic knot. The two panels are joined and then reinforced with a row of single crochet around the entire perimeter, which stiffens the edges and helps the bag maintain its rectangular shape. The magnetic snap closure and optional inner lining instructions make this pattern one of the most complete free designs available in this category.
Tips for Working Celtic Knotwork in Crochet
If you are new to Celtic knotwork patterns, a few practical tips will help you get started on the right foot.
First, swatch before you commit. Celtic knot motifs depend on precise stitch placement to create the interlaced effect, and tension that is even slightly off can make the design look muddled. Work a test square with your chosen yarn and hook before starting the full project.
Second, use stitch markers generously. When you are tracking the path of an interlaced design across multiple rounds, stitch markers at key crossing points prevent you from losing your place. There is no such thing as too many markers on a complex Celtic knot chart.
Third, choose colors with high contrast for your first Celtic knotwork project. The beauty of the interlaced design depends on being able to clearly see where one line passes over or under another, and that is only visible when the knotwork color stands out strongly from the background. Once you are comfortable with the technique, you can experiment with more subtle tonal combinations.
Fourth, block your squares before joining. Celtic knotwork squares often have slight distortions from the texture and directionality of the stitches, and a good wet block — pinning the squares flat and allowing them to dry — will give you neat, even squares that join beautifully.
Finally, be patient with yourself. Celtic knotwork crochet is more demanding than standard granny squares, and the first few squares of any new motif will take longer than the rest as you learn the rhythm of the design. By the fifth or sixth square, most crocheters find they have internalized the pattern and their speed increases significantly.
Joining Methods That Work Best for Bags
How you join your granny squares matters enormously for a bag, because bags take more physical stress than, say, a wall hanging or a blanket. The join needs to be both attractive and strong.
The flat slip-stitch join worked through both loops is one of the strongest options and creates a neat, nearly invisible seam. The join-as-you-go method, in which you connect each square to its neighbors during the final round, produces a flexible fabric with no visible seam at all. The decorative whipstitch join creates a raised ridge on the right side of the work that can be used as a design element, especially when worked in a contrast color that picks up one of the tones in the Celtic knotwork. For bags specifically, avoid the single crochet flat join, which creates a prominent ridge on the wrong side that can feel uncomfortable against your body.
Making Your Bag Last
A crochet bag is only as durable as the yarn and construction choices you make. For bags that will see regular use, cotton, hemp, linen, or a cotton-acrylic blend will serve you better than wool alone, which can stretch under the weight of bag contents over time. If you choose a thinner yarn, consider working with two strands held together to create a denser, more structured fabric. Always reinforce the handles by working multiple rows of reinforcing stitches where they attach to the bag body, because this is the highest stress point in any bag design.
An inner lining, even a simple one sewn from quilting cotton or canvas, dramatically extends the life of a crocheted bag and makes it feel more finished and professional. Most fabric stores carry iron-on interfacing that can be fused to the lining fabric before sewing, which adds structure and helps the bag keep its shape.
Whether you are drawn to the meditative rhythm of working granny squares, the challenge of mastering Celtic knotwork, or simply the idea of carrying a bag that you made with your own hands, this collection of free patterns gives you fifteen excellent places to start. Each one celebrates the intersection of tradition and creativity that makes crochet such a rich and enduring craft. Pick up your hook, choose your colors, and start making something beautiful.
