Tie-Up Back Crochet Top Free Pattern: A Step-by-Step Guide to Your New Favorite Summer Project
There is something deeply satisfying about wearing something you made with your own hands, especially when it looks like it came straight from a boutique. A tie-up back crochet top is exactly that kind of project — stylish, breezy, and impressively wearable. Whether you are a seasoned crocheter looking for a fresh summer pattern or an intermediate maker ready to level up from dishcloths and scarves, this free pattern will walk you through everything you need to know to create a beautiful, fitted crop top with a flirty open tie-back detail.
This pattern is designed to be accessible without being boring. It uses basic stitches that most crocheters already know, but the construction and finishing create something that looks far more complex than it actually is. Best of all, you do not need to spend a cent on a pattern — everything is right here.
Why You Will Love This Pattern
Before we get into the yarn and hook, let’s talk about what makes a tie-up back crochet top such a worthwhile project.
First, the silhouette is universally flattering. A cropped front with an adjustable tie-back closure means you can customize the fit at the waist every single time you put it on. Too many crochet garments feel like a gamble when it comes to sizing, but the open tie-back structure gives you a built-in adjustment mechanism that forgives minor gauge variations. This is a huge relief for crocheters who have struggled with fitted garments in the past.
Second, the open-back detail is genuinely chic. This is not a beginner’s approximation of fashion — it is a legitimately stylish design that works for beach cover-ups, festival looks, casual summer outings, and even layered under overalls or high-waisted pants for a trendy layered effect. The tie creates a bow or knot at the small of the back that draws the eye beautifully and adds a touch of elegance to what is otherwise a simple, relaxed top.
Third, it works up relatively quickly compared to other garment projects. If you dedicate a few hours each evening, most people can complete this top in a week of casual crocheting. That is a satisfying turnaround for a wearable you will actually reach for all season long.
Materials You Will Need
Gathering your supplies before you start is always worth the few extra minutes. Here is what this pattern calls for.
Yarn: Approximately 300 to 400 yards of DK weight or light worsted weight cotton yarn, depending on your size. Cotton is strongly recommended over acrylic for this project because it has natural breathability that makes warm-weather wearing comfortable. It also drapes beautifully and holds its shape without stretching out over time. Lion Brand 24/7 Cotton, We Are Knitters The Cotton, and Paintbox Simply DK Cotton are all excellent choices. For a more budget-friendly option, any generic cotton DK yarn from a craft store works well.
Hook: A 4.0 mm or 4.5 mm crochet hook depending on your personal tension. Most crocheters working in cotton will find that going up half a size from the yarn label recommendation creates a looser, more drapey fabric that is better suited to garment construction.
Notions: A yarn needle for weaving in ends, scissors, stitch markers (at least four), a tape measure, and blocking pins or a blocking mat if you want a polished finish.
Optional: A small amount of coordinating ribbon or a thin strip of the same yarn twisted into a cord can be used in place of a crocheted tie if you prefer a different texture at the back.
Gauge
Gauge matters more for garments than for almost any other crochet project, so please take the time to make a swatch before you begin.
The target gauge for this pattern is 16 stitches and 18 rows equal 4 inches (10 cm) in half double crochet using a 4.0 mm hook. If your swatch comes out larger than this, go down a hook size. If it comes out smaller, go up a hook size. Measure your swatch after a light blocking — lay it flat, mist it lightly with water, and allow it to dry completely before measuring.
Sizing Guide
This pattern includes instructions for sizes XS through XL. Because crochet garments are inherently somewhat flexible and the tie-back adds adjustability, sizing here is based on finished bust measurement rather than a range of body measurements.
XS: Finished bust 30 to 32 inches
S: Finished bust 33 to 35 inches
M: Finished bust 36 to 38 inches
L: Finished bust 39 to 41 inches
XL: Finished bust 42 to 44 inches
Throughout the pattern, stitch counts for each size will be listed in order, separated by slashes, like this: XS / S / M / L / XL.
Pattern Notes and Abbreviations
Before you dive in, familiarize yourself with these abbreviations and construction notes.
ch — chain
sl st — slip stitch
sc — single crochet
hdc — half double crochet
dc — double crochet
sp — space
rep — repeat
RS — right side
WS — wrong side
BLO — back loop only
This top is worked in two separate flat panels — a front panel and a back panel — which are then seamed together at the sides and shoulders. The back panel is intentionally narrow, creating the open sides that the tie detail bridges. The tie itself is a simple crocheted cord attached at each edge of the back panel.
If you have never worked a seamed garment before, do not be intimidated. A simple whip stitch seam with your yarn needle creates a clean join that lies flat and comfortable against the skin.
The Pattern: Front Panel
Foundation: Chain 73 / 81 / 89 / 97 / 105.
Row 1 (RS): Hdc in the third chain from the hook and in each chain across. Turn. You should have 71 / 79 / 87 / 95 / 103 hdc.
Rows 2 through 4: Chain 2, turn. Hdc in each stitch across.
Row 5 (Textured Row): Chain 2, turn. Hdc in BLO of each stitch across. This creates a subtle ridge that adds visual interest to the fabric without complicating the stitch pattern.
Rows 6 through 10: Chain 2, turn. Hdc in each stitch across.
Row 11: Repeat Row 5.
Continue in this established pattern — alternating a textured BLO row every fifth row — until your piece measures 7 inches from the foundation chain, or your desired length to the underarm. End with a RS row.
Armhole Shaping:
Next Row (WS): Sl st across the first 5 stitches. Chain 2, hdc across until 5 stitches remain. Turn, leaving the last 5 stitches unworked. You now have 61 / 69 / 77 / 85 / 93 stitches.
Decrease Row: Chain 2, hdc2tog over the first two stitches, hdc across until 2 stitches remain, hdc2tog. Turn.
Repeat the Decrease Row 3 more times. You should have 53 / 61 / 69 / 77 / 85 stitches remaining.
Continue working even (no decreases) in the established ridge pattern until the armhole measures 6 / 6.5 / 7 / 7.5 / 8 inches. End on a WS row.
Shoulder and Neckline Shaping:
Left Shoulder: Chain 2, hdc across 15 / 17 / 19 / 21 / 23 stitches. Turn. Work 3 more rows on these stitches only, then fasten off.
Center Neckline: Skip the center 23 / 27 / 31 / 35 / 39 stitches and join yarn at the beginning of the right shoulder section.
Right Shoulder: Hdc across the remaining 15 / 17 / 19 / 21 / 23 stitches. Work 3 more rows on these stitches, then fasten off.
The Pattern: Back Panel
The back panel is worked narrower than the front to create the open-back effect. The sides of the back panel will not reach all the way to the front panel sides — that gap is intentional and will be bridged by the tie cords.
Foundation: Chain 41 / 45 / 49 / 53 / 57.
Row 1 (RS): Hdc in the third chain from the hook and in each chain across. Turn. You should have 39 / 43 / 47 / 51 / 55 hdc.
Work in the same ridge pattern as the front panel (textured BLO row every fifth row) until the piece measures the same length as the front panel to the underarm. End on a RS row.
Armhole Shaping:
Work armhole shaping exactly as described for the front panel, leaving 5 stitches unworked at each end and working 4 decrease rows total.
You will have 23 / 27 / 31 / 35 / 39 stitches remaining after all decreases.
Continue working even in pattern until the armhole measures the same as the front panel armhole. End on a WS row.
Shoulder Shaping:
Left Shoulder: Chain 2, hdc across 15 / 17 / 19 / 21 / 23 stitches. Work 3 more rows on these stitches, then fasten off.
Center Back: The remaining center stitches (if any) can be left unworked or fastened off — depending on your size, the back panel may have no center stitches after the two shoulder sections are worked off.
Right Shoulder: Join yarn at the remaining stitches and work 4 rows, then fasten off.
The Tie Cords
The tie-up detail is what elevates this top from simple to stunning, and it is refreshingly easy to make.
You will make two cords, one for each side of the back opening. Each cord should be approximately 24 to 30 inches long — longer if you prefer a generous bow, shorter if you want a sleeker knot.
Cord Method: Chain 100 stitches (or more for a longer tie). Sl st in the second chain from the hook and in each chain across. Fasten off, leaving a 6-inch tail for attaching.
The resulting cord will be a neat, firm, slightly rounded chain strand that ties beautifully.
Alternatively, you can create a sturdier cord using this method: Chain 5, sl st in the first chain to form a tiny ring, then work sc stitches in a continuous spiral into the center of the ring, working around and around and pulling the cord tightly as you go. This tubular cord is thicker and holds a bow particularly well.
Attach each cord firmly to the side edge of the back panel using your yarn needle and the tail you left during fastening off. Position the cords at the natural waist level — typically about 3 to 4 inches from the bottom hem of the top. Weave the attachment in generously so it can withstand the tension of being tied.
Assembly
Lay your two panels side by side on a flat surface with the right sides facing up. Use stitch markers to pin the shoulder seams together, aligning the edges neatly.
Using your yarn needle and a length of yarn, whip stitch the shoulder seams closed on both sides. Turn the work right sides together for a cleaner seam if you prefer, or work right sides facing out for a deliberately visible seam detail.
For the side seams, you will only seam a portion of the side — from the hem up to the beginning of the armhole. The gap above that (where the armhole shaping begins) will remain open to form the armhole itself, and the remaining gap between the front side edge and the back panel edge forms the open back through which the tie cords will wrap around to the front and tie.
Try the top on before fully committing to your seaming to make sure the open gap aligns correctly with your natural waist and that the tie cords reach comfortably to tie at the front or back as you prefer.
Finishing Touches
Once your seams are secure, it is time to finish the edges for a polished look.
Neckline Edging: Join yarn at the right shoulder seam with a sl st. Work one round of sc evenly around the entire neckline, working approximately 1 sc per row end along the vertical edges and 1 sc per stitch along the horizontal edges. When you reach the starting point, sl st to join and fasten off. For a slightly more decorative edge, replace the second round with reverse single crochet (also called crab stitch), which creates a beautiful twisted rope effect that is a popular finish for crochet garments.
Armhole Edging: Repeat the same process around each armhole opening.
Hem Edging: Work one round of sc around the bottom hem of the front panel, then one round of sc along the bottom of the back panel.
Weave in all ends thoroughly with your yarn needle. For cotton yarn, it helps to split the plies slightly as you weave so the ends are truly locked in and will not come undone with washing.
Blocking: This step is optional but highly recommended. Wet blocking a cotton garment transforms it. Submerge the finished top in cool water and gently press out the excess water without wringing. Lay it flat on your blocking mat, shape it to the intended dimensions, and allow it to dry completely. The fabric will relax, the stitches will even out, and the top will look professionally made rather than handcrafted.
Styling Your Tie-Up Back Crochet Top
One of the joys of making your own clothing is that you can style it however you like, without worrying about whether it comes in a different color. Here are a few ideas for wearing your finished top.
Over a swimsuit at the beach, the open tie-back and breezy cotton construction make it a perfect cover-up that actually covers up. Throw it on over a one-piece or bikini top and pair it with linen trousers or a sarong.
For a festival or outdoor concert, pair it with high-waisted wide-leg jeans and sandals. The tie detail at the back gives you something interesting to show off when you are walking away from the crowd.
For a more polished summer look, tuck the front into a midi skirt and leave the back untucked. The tie becomes a focal point rather than just a closure, especially if you use a contrasting yarn color for the cords.
Layered under overalls with just the tie cords peeking out at the sides is another favorite look — it hints at the detail underneath without fully revealing it and works beautifully for casual daytime outings.
Customization Ideas
This pattern is a wonderful base to build on once you have made the basic version.
You can add a shell stitch or fan stitch border to the hem and neckline for a more decorative look. Simply work the edging in a multiple of three or four stitches and substitute a simple shell (five dc in one stitch, skip two, sl st in the next) for a lacy, airy trim.
Changing the texture of the main body by substituting moss stitch (alternating sc and ch 1, offset each row) gives the fabric a beautiful, slightly open hand that is even breezier than solid hdc. The gauge will shift, so make a fresh swatch if you go this route.
Adding thin shoulder straps instead of a wide strap construction creates a more lingerie-inspired silhouette that is very popular right now. Simply work the shoulder section narrow and elongate it, then seam the strap at a point on the front neckline rather than across the full shoulder width.
A Note on Sizing and Fit
Crochet garments are wonderfully forgiving, but it is worth repeating that swatching and trying the work on your body as you go are the two most important habits you can build. Hold the front panel up to your body before you seam it. Try the top on before you finish all the edges. These small check-ins save enormous amounts of frogging later.
If you find that the top is slightly too wide after blocking, the tie cords can compensate significantly by pulling the back in tighter. If the top is slightly too narrow, the same open back gives you the option of leaving a small intentional gap, which can actually look like a design choice rather than a sizing error.
The beauty of handmade garments is that imperfections become
