Slip Stitch Crochet: The Shortest, Most Useful Stitch
The slip stitch is the shortest stitch in crochet and, paradoxically, one of the most useful. Abbreviated 'sl st' in patterns, it barely adds any height at all — which is exactly why it is so valuable. Rather than building fabric upward, the slip stitch joins, edges, seams, travels, and decorates. Almost every project that works in the round uses slip stitches to close each round; almost every garment uses them to seam pieces together; and countless edgings rely on them for a clean, finished border. Learning to work a neat, even slip stitch is one of the quiet skills that separates rough-looking projects from polished ones.
What Is a Slip Stitch?
A slip stitch is worked by inserting the hook into a stitch, yarning over, and drawing that yarn through both the stitch and the loop already on the hook — all in a single motion. Because there is no second pull-through, the stitch stays flat against the fabric and adds virtually no height. This single-step construction makes it the simplest stitch mechanically, even simpler than the single crochet, though its very tightness can make it tricky to keep even at first.
Slip Stitch Anatomy
A row of slip stitches creates a tight, slightly raised ridge of small Vs lying close to the fabric. Because the stitch is so short, the top loops sit very near the loops of the row below, which is what makes slip stitches easy to work too tightly. When used for joining, the slip stitch nearly disappears into the seam; when used as fabric, the dense Vs give a smooth, almost woven texture that resembles knitting more than typical crochet.
When to Use the Slip Stitch
The slip stitch shines in finishing and construction. Use it to join the last stitch of a round to the first, closing a seamless ring. Use it to seam two pieces invisibly along an edge. Use it to travel across several stitches without adding height — for example, to reposition your yarn before starting a new section. Use it for edgings that need to lie flat. And use it for surface crochet, drawing decorative lines of color across finished fabric. Our dedicated guide on slip stitch uses in crochet covers each of these applications in depth.
Materials You Will Need
As with most stitches, you need only yarn and a hook. Because slip stitches are naturally tight, many crocheters reach for a hook one size larger than the yarn label suggests when working slip-stitch fabric or a slip-stitch join. Smooth, light-colored worsted yarn again makes the stitch easiest to see while learning. A stitch marker is useful for marking the joining stitch when working in the round, so you always know where each round begins and ends.
Step-by-Step: How to Slip Stitch
Step one: insert your hook into the next stitch (or the designated stitch), going under both top loops. Step two: yarn over by wrapping the working yarn over the hook. Step three: in one smooth motion, pull that yarn through both the stitch and the loop already on your hook. One slip stitch is complete, and you still have a single loop on the hook. Keep the motion loose and unhurried — the most common slip-stitch problem is pulling this single loop too tight to work into on the next pass.
A Visual Way to Picture It
Picture the slip stitch as 'stitching down' rather than 'building up.' Where a single crochet stacks a small block of fabric on top of the row below, the slip stitch lays a flat thread directly onto it, like a line of running stitches in sewing. When joining a round, imagine pulling the two ends of a circle together with a single tug — the slip stitch is that tug, made permanent. This mental image helps explain why it adds no height: it is a connector, not a builder.
Common Slip Stitch Mistakes
The single biggest mistake is working slip stitches too tightly, which makes the next row or round nearly impossible to hook into. Other common errors include accidentally adding height by pulling through in two steps (turning it into a single crochet), losing track of the joining stitch in the round, and inconsistent tension that makes a joining seam pucker. Because slip stitches are so short, even small tension differences show up as a tight, gathered edge.
Troubleshooting Slip Stitches
If your slip stitches are too tight, switch to a larger hook or work into the front loop only for extra give. If a joined round looks puckered, you are likely tightening the joining stitch — consciously leave it loose. If you cannot find the first stitch to join into, place a stitch marker in it at the start of the round. And if your slip-stitch fabric is curling or stiff, that density is normal; blocking the finished piece and using a larger hook both soften the result. Pattern terminology can add confusion too, so it helps to keep a crochet abbreviations reference nearby.
Tips for Better Slip Stitches
Work slip stitches more loosely than feels natural — aim for the same loop size you would use for a chain. When joining rounds, insert into the very first stitch of the round, not the chain that started it, unless the pattern says otherwise. For invisible seams, work slip stitches through the back loops or outer loops of both pieces held together. And practice a short slip-stitch swatch before using the stitch for an important join, so your tension is even when it counts.
Best Projects Using the Slip Stitch
Slip stitches appear in nearly every project, but they take center stage in a few. Slip-stitch hats and cowls use rows of slip stitches for a warm, stretchy, knit-look fabric. Amigurumi and granny-square projects rely on slip stitches to join rounds and motifs. Garments use them for seams. Decorative surface crochet uses them to draw designs across finished pieces. For construction-heavy work, slip stitches pair naturally with the joining and seaming methods explored in our crochet techniques category.
How the Slip Stitch Compares to Other Stitches
The slip stitch and the chain stitch are the two shortest elements in crochet, but they differ in purpose: the chain is worked into the air to build a foundation, while the slip stitch is worked into existing fabric to join and travel. Compared to the single crochet, the slip stitch is shorter and flatter because it skips the second pull-through. And compared to taller stitches like the half double crochet, it adds essentially no height — placing it firmly at the bottom of the stitch-height ladder alongside the chain.
Conclusion
The slip stitch proves that the smallest stitch can be the most useful. It joins your rounds, seams your pieces, finishes your edges, and even creates whole fabrics when worked in rows. The key is to keep it loose and even, resisting the natural tendency to pull it tight. Once you are comfortable joining and seaming with slip stitches, explore the basic building stitches next — and revisit the crochet stitch library to see how this humble stitch underpins so much of what you make.