How to Add a Stitch in Knitting: How Far the Rules Bend

To add a stitch in knitting, work an increase and choose it by where it sits. Knit into the front and back of one stitch (kfb) for a quick increase that leaves a small visible bar. Lift the strand between two stitches and knit it through the back or front leg (M1L or M1R) for a closed increase that leans left or right. Work a yarn over when the design wants an eyelet in that spot. Cast new stitches onto the needle when you need several at once at an edge. All four change your stitch count, so count the row afterward. The Craft Yarn Council defines each abbreviation, and your own pattern's key outranks that list.

What a pattern means when it tells you to add a stitch

"Add a stitch" names an outcome. At least four operations produce it, and the pattern has usually already decided which one it wants, somewhere other than the shaping row itself: a key, a special-instructions box, a note above the section.

The outcome is not always a single stitch, either. In the Running Circles Sweater (DROPS Children 47-8), one yoke round reads "Knit 1 round and increase 14-18-20-18-24-20 stitches evenly spaced," which takes the yoke to 88-96-104-104-112-112 stitches. Twenty new stitches in a single round for the mid-size, spread across the whole circumference, with no shaping line anywhere.

The Craft Yarn Council publishes the standard abbreviation list, and it carries a note that matters more than the list: "designers and publishers may use special abbreviations in a pattern, which you might not find on this list. Generally, a definition of special abbreviations is given at the beginning of a book or pattern." I have spent eleven years checking exactly that kind of sentence in another field, where two schools print the same drill name on grading sheets for two different movements, and the belt card is the only thing that settles it. The pattern key is the belt card. Read it before the shaping row.

Choose by the fabric you want, not by the tutorial you learned first

Every increase does two things: it changes the count, and it leaves a mark. The count is identical across methods. The mark is what you are choosing.

| Increase | What it leaves in the fabric | Where it earns its place | Count change | |---|---|---|---| | kfb | a small horizontal bar below the new stitch | side lines, garter, textured fabric, edges that get seamed | +1 | | M1L | closed, leans left | the left side of a shaping line | +1 | | M1R | closed, leans right | the right side of a shaping line | +1 | | yarn over | an open eyelet | lace, deliberate holes, decorative shaping | +1 | | yarn over worked twisted on the next row | closed, no eyelet | plain fabric, where a designer wants speed | +1 | | cast-on at the edge (backward loop, cable) | new fabric and a new edge you can pick up later | underarms, extending a row, gussets | + however many you cast on |

Stockinette in the middle of a plain front shows everything, so a closed increase belongs there. A side line at the fold hides a small bar completely. That is the whole decision.

KFB leaves a bar, and a published pattern still calls for it

The advice that dominates beginner tutorials is: use kfb for everything. It is easy to teach: no picked-up strand, no leg to choose. It also leaves a bar, and on a stockinette sleeve that bar becomes a row of small dashes anyone can see.

That does not make kfb an error. DROPS 91-5 specifies it outright for body shaping: "When the garment meas 11 cm inc 1 st at each side of both thread markers. 1 inc = k into the back and into the front of the same st." That is the kfb family, with the two legs worked in the opposite order, and the pattern puts it at the two side markers. In the smallest size the body goes from 172 stitches to 192 over five increase rounds, four stitches each, spaced every 4.5 cm. My reading is that the placement is the reason the method is fine: at the side line, a bar reads as part of the garment's edge rather than as a defect in the middle of a plain field. Beginners get told "kfb is a beginner increase" when the honest statement is narrower — kfb is a visible increase, and visibility is sometimes what a designer wants.

M1L and M1R exist because shaping has a direction

The Craft Yarn Council's list gives them separate entries: M1R is "make one right; single right-leaning knit increase," M1L is "make one left; single left-leaning knit increase." Both lift the strand between two stitches; the direction you pick it up and the leg you knit into decide the lean.

Placement is written into the pattern. The Lightweight Raglan Pullover from Purl Soho, designed by Laura Ferguson, has this sleeve instruction: "Increase Round: K1, make 1 left (m1L), knit to last stitch, make 1 right (m1R), k1. [2 stitches increased]" One stitch in from each end, mirrored so both edges shape symmetrically, and the single edge stitch stays clean for seaming or picking up later. That round takes the smallest sleeve from 52 stitches to 54. In the same company's Simple Tee, worked top down, the raglan increases sit one stitch either side of each marker, and Purl Soho's answer to a knitter asking about the order is direct: work the M1R before the marker and the M1L after it, every time, so the increases stay oriented along the raglan.

Use one increase on both sides and half the shaping leans the wrong way. Nobody will name the flaw. They will notice that one sleeve looks tidier.

A yarn over is an increase, and the hole is optional

A yarn over adds exactly one stitch, the same as kfb and the same as M1L. The Craft Yarn Council lists it as an abbreviation like any other. The difference is that a yarn over leaves the new stitch open, so the fabric gets an eyelet.

In lace, that eyelet is the design; the increase and the hole are one and the same decision, usually paired with a decrease so the count stays put. The error is not the hole. The error is an open increase where the pattern specified a closed one, or a closed increase where the chart wanted the eyelet to show.

The hole is also removable. The Running Circles Sweater's own increase tip reads: "Increase 1 stitch by making 1 yarn over, which is worked twisted on the next round to avoid a hole." Same operation, same stitch, and the hole closes because the next round works that loop through its twisted leg. So a yarn over and a make-one are separated by one round of treatment, and a pattern that names a yarn over for plain stockinette has not made a mistake.

Edges, row ends, and rounds are three different problems

Adding a stitch inside a row is shaping. Adding stitches at an edge is construction, and it uses a cast-on rather than an increase.

The Running Circles Sweater divides the yoke like this: knit half the back, put the sleeve stitches on a thread, "cast on 6 stitches under the sleeve," knit the front, hold the second sleeve, cast on 6 more, knit the remaining back stitches. For the smallest size that is 30 + 6 + 61 + 6 + 31 = 134 stitches, which is the number the pattern prints. The arithmetic closes in all six sizes. Those twelve new stitches are not decoration: the sleeve instruction later says to "knit up 1 stitch in each of the 6 stitches cast on under the sleeve," turning 44 held stitches into 50.

A bottom-up sweater does the same joint in reverse. The Lightweight Raglan Pullover moves 10 (14, 18, 22, 26) (30, 34, 38, 42) sleeve stitches onto a holder at the underarm, dropping the smallest sleeve from 86 stitches to 76. Which way the stitches move depends on the direction the garment is built.

For a cast-on at an edge, the backward loop is fastest and gives a soft edge; a cable cast-on is firmer and bulkier. Both are pattern-specified when they matter. In the round there is no edge to work from, so the marker takes its place: the Purl Soho sleeve increases sit one stitch either side of the round marker, and DROPS marks a single underarm stitch and shapes on each side of it.

Count before you continue

Every number above came off a pattern page. The Craft Yarn Council's yarn weight chart puts Category 4 medium yarn at 16 to 20 stitches per 4 inches on 4.5–5.5 mm needles, then says plainly: guidelines only, always follow the gauge stated in your pattern. It gives no row gauge at all. Row gauge is what converts a shaping instruction written in centimetres into rows you can count.

Watch how much that varies. Purl Soho's Lightweight Raglan runs 28 stitches and 33 rows to 4 inches. DROPS Children 47-8 runs 21 stitches and 28 rows to 10 cm. DROPS 91-5 gives 23 stitches and 30 rows, then spaces its increases every 4.5 cm, which at that row gauge is 13.5 rows — a figure the pattern never prints, because you are expected to derive it or to measure. Purl Soho's Ribbed Raglan Pullover lists two gauges for one fabric: 45 stitches unstretched, 34 gently stretched, both at 37 rounds. And the Everyday Linen Raglan gives stitch gauge on the page while its row gauge, 8 to the inch blocked, exists only in the designer's reply to a reader in the comments.

Before you work a shaping row:

1. Read the pattern's own key and confirm what its increase abbreviation means there.
2. Write down the stitch count before the row.
3. Find the stated interval — every 7th round, every 4.5 cm, whatever it says — and do not swap in a generic rhythm.
4. Work the increase at the stated distance from the edge or marker.
5. Count after the row and compare with the number the pattern prints.

Step three is where I have done damage in my own field: I once copied an advanced rank label into a beginner guide because it matched wording I already had, without checking that school's sequence. Substituting "increase every 4th row" for a pattern that said every 7th is the same mistake, and it produces a sleeve of the wrong length with a perfectly correct stitch count.

Step five is the part that survives fatigue. Late at night, with the decisions already made hours ago, judgment about lean and bar and eyelet has left the building, and arithmetic still works: 52 stitches, 17 increase rounds, 2 stitches each, gets you 86. That is the count the Lightweight Raglan Pullover prints for the smallest sleeve, and it either matches or it does not.

Questions knitters actually ask

How can I discreetly add a stitch in knitting?

Use M1L or M1R. Both lift the strand between two stitches and knit it through one leg, which closes the new stitch and leaves no hole and no bar. Place it one or two stitches in from the edge, and mirror the pair on opposite sides of a shaping line so both sides lean the same way.

How do I add a stitch in the middle of a row?

Work an increase between two existing stitches at the position your pattern names. M1L and M1R are the invisible choice, kfb the fast visible one, and a yarn over the open one. The count goes up by one for each. In plain stockinette across a front or a sleeve, use a closed increase.

How do I add a missing stitch in knitting?

Find why it is missing first. A dropped stitch shows as a ladder and gets hooked back up its rungs with a crochet hook, restoring the original count. If you skipped an increase instead, work it on the next row at the same position; one row of offset is invisible in a garment, and the alternative is ripping back.

How do you increase a stitch in knitting without leaving a hole?

Use M1L or M1R, which knit a lifted strand through its twisted leg so no gap forms. Alternatively, work a yarn over and knit it twisted on the next row, which DROPS specifies in its Running Circles Sweater to avoid a hole. A kfb also leaves no hole, though it does leave a small bar.

How can I add a stitch at the end of a row?

Cast it on rather than increasing. A backward loop cast-on adds stitches directly to the needle at the end of a row and is the usual choice; a cable cast-on gives a firmer, bulkier edge. Patterns state the number, like the 6 stitches DROPS casts on under each sleeve when dividing the yoke.

How can I increase stitches in the round?

There is no row edge in the round, so shaping is placed relative to a marker. Purl Soho's Lightweight Raglan Pullover works "K1, m1L, knit to last stitch, m1R, k1" for two stitches per round, and DROPS marks one underarm stitch and increases on each side of it. Count each round after working it.

Which increase should lean toward the sleeve seam?

Follow your pattern's order rather than choosing by feel. Purl Soho's Lightweight Raglan Pullover puts the left-leaning m1L just after the first stitch of the round and the right-leaning m1R just before the last, so the two edges mirror each other. Reverse the pair and one side leans against its own shaping line.