How to Read a Cable Chart

Cable charts look intimidating at first glance — a grid of boxes filled with diagonal lines and cryptic symbols. But once you understand the logic behind the symbols, cable charts are actually clearer than written-out cable instructions. The chart shows you visually what the finished fabric should look like.

Here's how to decode every symbol you'll encounter.

The Basic Structure of a Cable Chart

A cable chart is a grid where:

Each column represents one stitch

Each row represents one row of knitting

Row numbers run up the right side — row 1 is at the bottom, the highest row number is at the top (you read the chart upward, just as your knitting grows upward)

Right-side rows are read right to left (the direction you knit)

Wrong-side rows are read left to right (the direction you knit on the return)

Some patterns only chart the right-side rows and give written instructions for wrong-side rows ("purl all stitches on WS"). That's fine — check the pattern notes.

What the Filled and Empty Squares Mean

Before you get to the cable symbols, you need to know what plain stitches look like on a chart:

Filled square (dark or with a dot) — Knit stitch on the right side, purl stitch on the wrong side. This is the standard stockinette symbol.

Empty square (hollow or with a dash) — Purl stitch on the right side, knit stitch on the wrong side. Reverse stockinette or seed stitch ground.

Square with a horizontal line — Some charts use this specifically for purl; always check the key.

The background texture of a cable panel is usually reverse stockinette (purl bumps on the right side). The cables themselves stand in relief against this purl background, which is why the cable columns look raised and defined.

Understanding the Cable Crossing Symbol

The cable crossing is shown as a box spanning multiple columns, divided by diagonal lines. Here's how to read it:

Diagonal lines slanting from bottom-right to top-left (leaning left /) — the cable crosses to the left. The held stitches go in front of the work (C_F or front cable). This creates a left-twisting cable.

Diagonal lines slanting from bottom-left to top-right (leaning right ) — the cable crosses to the right. The held stitches go behind the work (C_B or back cable). This creates a right-twisting cable.

The width of the symbol box tells you the stitch count. A symbol spanning 4 columns is a 4-stitch cable (C4F or C4B). A symbol spanning 6 columns is a 6-stitch cable (C6F or C6B). Count the columns to know how many stitches are involved.

Some charts split the cable box to show which stitches go where. The symbol might show 2 columns on one side of the diagonal and 2 columns on the other, indicating 2 stitches held and 2 stitches knitted. The stitches shown on the bottom of the diagonal are knitted first; the stitches shown on top are knitted from the cable needle.

Reading the Chart Key — Always Check First

Chart symbol conventions vary between publishers, designers, and software. Before you start reading any cable chart, find the key and read it completely. Look for:

What does a filled square mean in this chart?

Which diagonal direction means "hold in front"?

Are there any symbols for twisted stitches, bobbles, or other textural elements?

Are wrong-side rows shown or written out separately?

If the chart uses a symbol you don't recognise, the key will explain it. Never guess at a symbol — the key is always there for a reason.

How Many Stitches Are Involved?

Count the columns covered by the cable symbol. A cable crossing always uses an even number of stitches, split equally between the held group and the working group.

4 columns — 2 stitches held + 2 stitches knitted = C4F or C4B

6 columns — 3 stitches held + 3 stitches knitted = C6F or C6B

8 columns — 4 stitches held + 4 stitches knitted = C8F or C8B

Some cables involve uneven splits — for example, holding 2 stitches while knitting 3, then knitting the held 2. These are sometimes called traveling cables or cross-stitch cables. The key will clarify the exact stitch count in those cases.

Tracking Your Row on the Chart

Losing your place on a cable chart is one of the most common (and frustrating) mistakes. Use these strategies:

Magnetic chart holder: A magnetic board with a magnetic strip that you move up row by row. The strip covers all the rows you've already worked, so you can only see the current row and above. These are inexpensive and genuinely helpful.

Sticky note: Place a sticky note above the current row. You see the current row at the top of the exposed section and can also look down at what you've already done — helpful for checking your progress.

Row counter: A click counter (mechanical or app-based) to track your current row number. Cross-reference with the chart.

Highlighter tape: Semi-transparent colored tape that you can move up the chart. Doesn't damage the printed chart.

On a cable chart, you're always working the row indicated by the row number. Row 1 is the first row you work. Row 2 is next. The cable crossing rows are usually odd-numbered (right-side rows) — even rows are usually plain purl-back rows.

Combining Cables with Textural Stitches

Many cable patterns don't just have pure cables — they mix the cable columns with seed stitch, moss stitch, twisted stitches, or bobbles for texture. On the chart, each of these has its own symbol.

Common additional symbols to learn:

Twisted knit stitch (tbl) — often shown as a stitch with a diagonal line through it. Knit through the back loop.

Bobble — usually shown as a circle or filled circle. A cluster of stitches worked in and out of one stitch to create a textured bump.

No stitch — shown as a dark filled square (different from a knit stitch — check the key). Used to show where stitches don't exist due to shaping.

When a panel combines cables and texture, work section by section across the chart. Don't try to read the whole row at once — read it in chunks: background stitches, cable crossing, background stitches.

What to Do When the Chart Looks Wrong

If your knitted fabric doesn't look like the chart photo, stop and compare. Common discrepancies:

Cable twisting the wrong way — you read the diagonal direction incorrectly, or confused front and back hold. Check the key and the corresponding written instruction.

Pattern shifted by one row — you started the cable crossing one row early or late. Look at the number of plain rows between crossings in the pattern photo vs. your fabric.

Background texture wrong — you've been knitting where you should be purling, or vice versa. Check whether the squares in the background section are filled or empty.

When the chart and the written instructions conflict, most knitters follow the written instructions — the chart may contain a printing error. If you have both, use them together to cross-check your work.

Cable charts make complex patterns manageable. Once you've worked through a chart a few times, glancing at the grid tells you exactly what's coming — you can anticipate the crossing three rows ahead. That visual preview is something written instructions simply can't give you. If you're new to cables entirely, start with the beginner cable guide before tackling a full chart.

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