Single crochet is the shortest basic crochet stitch in US terminology, made by pulling one loop through a stitch and then through two loops on the hook. The resulting fabric is dense, firm, and relatively low-stretch, with a recognizable V-shaped stitch at the top. It is widely used for amigurumi, bags, borders, baskets, and sturdy blankets.
Quick Answer
A US single crochet uses one yarn-over and two pull-through actions.
The finished stitch is short, dense, and usually more structured than half double crochet or double crochet.
A new row commonly begins with one chain, although pattern instructions determine whether that chain counts as a stitch.
Standard single crochet is worked through both top loops; FLO and BLO create directional texture.
A beginner can usually understand the motion in 10-30 minutes, but consistent tension takes longer.
A typical acrylic project costs about $15-$50, excluding labor and specialty tools.
What Is Single Crochet?
Single crochet, abbreviated sc in US patterns, creates one compact column of yarn for every completed stitch. The hook enters the next stitch, draws up a loop, and then pulls the working yarn through both loops on the hook. Each completed stitch has a front-facing V made from two top loops.
The stitch produces a fabric with small gaps, but those gaps are much less visible than in taller stitches. That structure makes single crochet useful when the fabric must resist abrasion, hold its shape, or conceal stuffing. The trade-off is slower growth in height and greater yarn consumption per square inch.
The Craft Yarn Council’s standardized US crochet terminology identifies single crochet as sc and double crochet as dc. UK patterns use different names: a US single crochet is generally called a UK double crochet. Always identify the pattern’s terminology before beginning, especially when converting instructions from British or Australian publishers.
How the Stitch Is Built
A single crochet contains a front loop and a back loop at its upper edge. Unless a pattern specifies FLO, BLO, or another insertion point, the hook passes under both loops.
The stitch below also contains a vertical post and side bars. Those lower parts matter when working thermal crochet, waistcoat stitch, surface crochet, or stitches into previous rows. In ordinary fabric, however, the two top loops provide the normal insertion target.
How Do You Make a Single Crochet Stitch?
To make a single crochet, insert the hook into the designated stitch, yarn over, pull up a loop, yarn over again, and pull through both loops on the hook. The stitch begins with two loops after the first pull-up and ends with one loop ready for the next stitch.
The Five-Step Method
- Insert the hook under the required loops of the next chain or stitch.
- Yarn over by placing the working yarn over the hook.
- Pull up a loop through the stitch. Two loops now sit on the hook.
- Yarn over again.
- Pull through both loops to finish the stitch.
For a foundation chain, insert the hook into the second chain from the hook unless the pattern gives another instruction. The loop already on the hook does not count as a chain. If a pattern says to make 21 chains for 20 single crochets, that second-chain insertion produces the first stitch.
How Do You Start the Next Row?
A typical US single crochet row begins with one turning chain. Many patterns instruct you to chain one, turn, and place the first single crochet in the first stitch of the previous row. That chain usually provides turning height but does not count as a stitch.
Pattern conventions differ. If the instructions say “chain 1, turn, skip the first stitch,” the turning chain may count as the first stitch, although this is less common for dense single crochet fabric. Follow the written stitch count rather than assuming every turning chain has the same role.
| Row instruction | First insertion point | Does chain count? | Typical result |
|---|---|---|---|
| Ch 1, turn, sc in first stitch | First stitch | No | 20 stitches remain 20 stitches |
| Ch 1, turn, skip first stitch | Second stitch | Usually yes | Edge chain functions as stitch |
| Ch 2, turn, sc in first stitch | First stitch | Usually no | Taller turning space |
| Spiral round, no turning chain | Next stitch | No | Continuous tube with no seam |
What Types of Single Crochet Change the Fabric?
Single crochet variations change the location of hook insertion, the direction of the ridges, the thickness, or the appearance of the stitch. Standard work through both loops creates the most even surface, while FLO and BLO emphasize horizontal ridges. Thermal and waistcoat techniques require more precise insertion and usually take longer.
- Standard single crochet: Worked under both top loops for a stable, balanced surface.
- Front loop only, or FLO: Worked under the loop nearest the viewer, creating horizontal ridges and more flexibility across the fabric.
- Back loop only, or BLO: Worked under the loop farthest from the viewer, producing a ribbed surface and useful fold lines.
- Thermal single crochet: Inserts the hook into a loop from the current row and a corresponding loop from the row below, creating a thick, insulating fabric.
- Waistcoat stitch: Enters the center of the V rather than the usual top loops, producing a knit-like vertical appearance.
- Yarn-under single crochet: Wraps the yarn under the hook during one or both yarn-over actions, a common amigurumi technique.
| Variation | Main insertion point | Fabric change | Common application |
|---|---|---|---|
| Standard sc | Both top loops | Balanced, dense surface | Blankets, toys, panels |
| FLO sc | Front top loop | Horizontal ridges, more bend | Fold lines, texture |
| BLO sc | Back top loop | Ribbing, directional stretch | Cuffs, borders, bands |
| Thermal sc | Current and lower-row loops | Extra thickness, low flexibility | Potholders, mats |
| Waistcoat stitch | Center of V | Knit-like vertical columns | Bags, decorative panels |
Yarn-under work is not a separate height category. It changes how the loops cross. In amigurumi, the altered crossing can make the V-shaped stitches look more compact and reduce visible holes, but the technique can also feel slower and may twist the stitch if tension is inconsistent.
What Fabric Does Single Crochet Produce?
Single crochet produces a firm fabric with limited drape, modest stretch, and good surface coverage. The exact result depends on yarn fiber, hook size, tension, and whether the stitch is worked through both loops or one loop.
A dense stitch is not automatically a stiff stitch. A large hook with soft wool can create a flexible single crochet fabric, while a small hook with cotton can produce a rigid fabric that resists folding. Fabric behavior must therefore be judged from a swatch, not the stitch name alone.
Gauge, Height, and Width
Single crochet does not always form a perfect square. Many crocheters obtain a wider stitch than it is tall, especially with loose tension, so a 1:1 height-to-width ratio is only a rough starting assumption. A pattern’s stated gauge takes priority over a general stitch estimate.
Typical unstretched gauges are:
| Yarn and hook example | Stitch gauge | Row gauge | Swatch character |
|---|---|---|---|
| Worsted acrylic, 5 mm hook | 14-16 sc per 4 in | 16-20 rows per 4 in | Medium, stable |
| DK cotton, 4 mm hook | 18-22 sc per 4 in | 20-26 rows per 4 in | Firm, smooth |
| Bulky wool, 6.5 mm hook | 9-12 sc per 4 in | 11-15 rows per 4 in | Thick, flexible |
| Sport cotton, 3.25 mm hook | 22-26 sc per 4 in | 24-30 rows per 4 in | Compact, structured |
To calculate approximate width, divide the stitch count by the stitches per inch. For example, 100 stitches at 4 stitches per inch produce a panel about 25 inches wide before edging. Row count controls height, but row gauge can change after washing or blocking.
Expert insight: the most useful single-crochet swatch is not merely a gauge sample. It reveals whether the hook can enter the stitches without force, whether the edges remain parallel, and whether the fabric is dense enough for the project.
Which Yarn and Hook Work Best?
The best yarn and hook combination depends on the required stretch, durability, surface definition, and washability. Cotton gives crisp stitches and low elasticity, acrylic offers affordability and easy care, and wool provides warmth with more natural recovery.
| Project type | Typical yarn | Typical hook | Main selection reason |
|---|---|---|---|
| Amigurumi | Cotton or cotton blend | 2.25-3.5 mm | Small holes and clear shaping |
| Dishcloth | Worsted cotton | 4-5 mm | Absorbency and wash durability |
| Basket | T-shirt yarn or stiff cotton cord | 8-12 mm | Structural support |
| Blanket | Worsted acrylic or wool blend | 5-6 mm | Warmth and manageable weight |
| Bag | Cotton, linen, or recycled cord | 4-6 mm | Reduced stretching under load |
Hook size changes both gauge and hand comfort. A smaller hook generally makes a denser fabric, but reducing the hook too far can split yarn, deform the loops, and cause wrist fatigue. For amigurumi, crocheters commonly choose a hook 0.5-1.5 mm smaller than the yarn label’s general recommendation.
Acrylic yarn is often the least expensive starting material. Cotton is usually better for bags and dishcloths because it stretches less, while wool can relax and reshape during wet blocking. Fiber choice has a direct consequence: the same stitch count can produce different finished dimensions after washing.
How Does Single Crochet Compare With Other Stitches?
Single crochet is shorter and denser than half double crochet and double crochet. It normally uses more yarn per unit of covered area and grows more slowly in height, but it provides better structure and smaller openings.
| Feature | Single crochet | Half double crochet | Double crochet |
|---|---|---|---|
| US abbreviation | sc | hdc | dc |
| Typical height | 0.25-0.4 in | 0.4-0.6 in | 0.6-0.9 in |
| Fabric density | High | Medium | Lower |
| Typical drape | Low to medium | Medium | Medium to high |
| Relative work speed | Slowest | Moderate | Fastest |
| Common use | Toys, bags, baskets | Hats, garments, blankets | Shawls, open blankets |
The measurements in the table are typical practitioner ranges, not universal standards. Yarn weight, tension, hook size, and stitch construction can move every value.
Choose single crochet when the project needs shape retention, controlled stuffing coverage, or a surface that tolerates frequent handling. Choose half double crochet when you want a compromise between density and speed. Choose double crochet when height, drape, or a more open fabric matters more than compact structure.
Single crochet is usually a poor choice for lightweight summer garments that require fluid movement. It can also make a large blanket heavy because the dense fabric uses substantial yarn.
How Long Does It Take and What Does It Cost?
A beginner often understands the basic motion in 10-30 minutes, but even tension and accurate edge counting usually require several practice swatches. A typical intermediate crocheter may need 2-3 minutes for a 60-stitch row, depending on yarn thickness and whether the row includes shaping.
| Project example | Approximate size | Typical material cost | Continuous crochet time |
|---|---|---|---|
| 8-inch amigurumi | 6-10 oz yarn | $8-$25 | 3-8 hours |
| 12 x 18-inch basket | 12-20 oz yarn | $15-$40 | 5-12 hours |
| 36 x 48-inch throw | 2,000-3,000 yd yarn | $35-$100 | 20-40 hours |
| 48 x 60-inch blanket | 3,500-5,000 yd yarn | $60-$180 | 35-75 hours |
These are typical US retail ranges for yarn and basic supplies. A basic aluminum or ergonomic hook commonly costs $3-$12, while a complete beginner setup with one skein, a hook, a needle, and stitch markers often falls between $10 and $30.
Project cost depends more on yarn fiber and yardage than on the stitch abbreviation. Premium wool, hand-dyed yarn, and imported cotton can multiply material cost, while acrylic purchased during a sale can reduce it substantially. Labor time is separate from the retail material budget.
Expert insight: blanket estimates often understate finishing time. Weaving ends, joining panels, adding borders, washing, drying, and correcting count errors can add 10%-25% beyond the time spent making the rows.
How Do You Count Single Crochet Stitches?
Count the V-shaped tops across the row, including the edge stitch but excluding the turning chain unless the pattern explicitly counts it. Each visible V normally represents one completed stitch.
For a flat rectangle, place a stitch marker in the first and last actual stitch of every row during practice. Count after each row until the edge shape becomes familiar. If the stitch count changes by one, inspect the first and last stitch before undoing the entire row.
The turning chain causes many counting errors. A chain-one turning loop usually sits beside the edge rather than directly above a stitch. Crocheting into that chain can create an unintended increase, while skipping the true first stitch creates a decrease.
What Happens When a Stitch Is Missed?
A missed stitch narrows the fabric by one stitch from that row onward. Repeated missed edge stitches create a trapezoid, while missed interior stitches produce a hole or a visible indentation.
To repair the problem, compare the current row with the previous row and identify the last point where the count changed. Undo back to that point, then rework the row. If the mistake is several rows old, a deliberate decrease or increase can restore the count, but the correction may remain visible.
Why Does Single Crochet Become Too Tight?
Single crochet becomes too tight when the working loop is pulled smaller than the hook shaft, the hook is too small for the yarn, or the crocheter grips the fabric while forming each stitch. Dense stitches magnify tension differences, so a small change in loop size can make hook insertion difficult.
Use the hook throat to form the loop rather than pulling the yarn tight with the fingers. Let the completed stitch slide to the widest part of the shaft, then return the hook to the throat before drawing through both loops.
| Problem | Likely cause | Visible symptom | Practical correction |
|---|---|---|---|
| Hook will not enter stitch | Tight working loops | Split or distorted V | Relax tension, use larger hook |
| Row widens | Extra edge insertion | Slanted side edge | Mark first and last stitches |
| Row narrows | Missed first or last stitch | Trapezoid panel | Count every completed row |
| Holes show in toy | Hook too large or loose yarn-over | Visible stuffing | Reduce hook by 0.5-1.5 mm |
| Surface twists | Inconsistent yarn-under | Slanted V shapes | Use one wrap method consistently |
If hand pain appears, stop and change the setup. A larger ergonomic handle, a lighter grip, regular breaks every 20-30 minutes, and a slightly larger hook can reduce force without changing the project dramatically.
When Should You Use It for Amigurumi?
Single crochet is the standard shaping stitch for many amigurumi because its compact fabric limits stuffing gaps and makes increases and decreases easy to track. Most soft toys are worked in continuous spiral rounds, so the crocheter does not turn at the end of each round.
Yarn under can make the stitches look more like small X shapes on the exterior, while conventional yarn over commonly produces V shapes. Either method can work, but switching between them changes tension and visual consistency.
Use a stitch marker in the first stitch of every spiral round. Count the round regularly, especially after increases and decreases. A common shaping sequence is six single crochets into a magic ring, followed by evenly spaced increases until the base reaches the intended circumference.
What Is the Difference Between a Spiral and Flat Round?
A spiral round continues directly into the next stitch without a turning chain, creating a nearly invisible transition but a slightly sloping round boundary. A joined round ends with a slip stitch and often uses a turning chain, creating a clearer seam but more predictable round height.
Spirals suit stuffed animals and seamless tubes. Joined rounds suit motifs, color changes, and pieces where the round boundary must align.
How Should You Block and Finish the Fabric?
Single crochet changes shape less dramatically during blocking than taller, more open stitches, but fiber still matters. Acrylic usually responds to gentle washing and shaping rather than high heat, cotton can relax and stretch, and wool can be reshaped with moisture.
To finish a flat panel, weave the yarn tail through several stitch paths on the wrong side, change direction, and trim the remainder. A tail of 4-6 inches gives enough length for secure weaving. For amigurumi, hide tails inside the stuffed form only after securing them firmly.
Blocking cannot transform dense single crochet into lace. It can correct slightly uneven edges, settle tension, and improve dimensions, but it will not create the drape of double crochet.
Frequently Asked Questions About What Is Single Crochet
Is Single Crochet the Same as Double Crochet in the UK?
Yes, in standard terminology, a US single crochet is called a UK double crochet. The stitch itself is the same construction, but the abbreviations differ. A US double crochet corresponds to a UK treble crochet, so checking the pattern’s terminology prevents an entire project from being worked at the wrong height.
How Many Chains Do I Need for a Single Crochet Row?
For a basic flat row, make the number of desired stitches plus one foundation chain when the turning chain does not count. For example, 21 chains usually produce 20 single crochets. Pattern instructions override this general rule because some designs count the turning chain as a stitch.
Can Single Crochet Stretch?
Single crochet has limited natural stretch compared with ribbed crochet or taller stitches. BLO and FLO versions can stretch more across their ridges, while cotton single crochet usually stretches less than wool or acrylic. A bag made from dense single crochet may still expand under weight, so lining or reinforcing the handles can help.
Why Does My First Row Look Uneven?
The foundation chain is often tighter than the following rows, which makes the first row difficult to enter and causes an uneven lower edge. Use a hook 0.5-1 mm larger for the chain, loosen the chain tension, or work into the chain’s back ridge for a cleaner edge.
Is Single Crochet Reversible?
Standard single crochet appears similar on both sides, but the front and back surfaces are not perfectly identical. Yarn-under amigurumi, FLO, BLO, color changes, and textured variations make the difference more noticeable. For a reversible item, examine both sides of a swatch before committing to the full project.
Does Single Crochet Use More Yarn Than Double Crochet?
Usually, yes, when comparing similarly sized areas made with the same yarn and tension. Single crochet packs more stitches into the fabric and gains less height per row, so it often requires more yardage and more working time. The exact difference depends on gauge, project dimensions, borders, and shaping.
Conclusion: What Is Single Crochet Best For?
What is single crochet in practical terms? It is a short, dense crochet stitch that trades speed and drape for structure, coverage, and reliable shaping. Use it for amigurumi, baskets, bags, borders, dishcloths, and sturdy blankets; choose taller stitches when a project needs lightweight fabric, openness, or fluid movement.
Start with standard work through both loops, one turning chain, and a marked first and last stitch. Then test a small swatch before selecting yarn, hook size, or a variation such as FLO, BLO, thermal, waistcoat, or yarn-under single crochet.