Photo to Knitting Colorwork Chart: Gauge, Floats and Yarn

The knitting chart tool converts a photo into a grid of colored stitches and rows. It produces a colorwork chart for a section, so choose garment dimensions and shaping separately.

Start with your gauge

Knitted stitches may have different widths and heights. Knitting a square-pixel image directly can change its proportions. Enter a gauge measured with your actual yarn and needles.

At 22 stitches and 30 rows per 10cm, a section of 110 stitches by 90 rows measures 50cm wide by 30cm high. The tool uses these stitch proportions in the chart. See swatch and target-size calculations for the underlying method.

Set the crop and actual yarn colors

Upload the photo, adjust framing, and set stitches and rows. If the grid limits prevent preserving the ratio, review the crop.

Start with fewer colors and a small section, then replace the proposed colors with your intended yarn colors. The screen cannot reproduce yarn texture or dye differences; knit a small colorwork swatch to check contrast.

Check floats and your colorwork method

For stranded work such as Fair Isle, a float is the strand carried behind stitches where that color is not used. The tool flags colors per row and long carries, but it does not decide how you should catch floats or control tension.

In-the-round mode also checks the carry between the last stitch and first stitch. Select flat or round knitting to match your work. Review large intarsia color blocks and isolated dots, changing colors or cleaning small dots where needed.

Treat yarn amounts as estimates

Enter the swatch’s stitches, rows and weight to calculate yarn usage per stitch. The tool applies that value to each color’s stitch count and adds 10% allowance to estimate weight. Enter skein weight to calculate estimated skeins. Actual use varies with gauge, yarn, tension, floats and finishing allowance; use a representative swatch and review the estimate.

The estimate covers the charted section. It does not include other garment pieces, sleeves or ribbing.

Check the PDF reading direction

Row 1 is at the bottom. For flat knitting, follow the marked right-side and wrong-side reading directions; in the round, read consistently in one direction. Check the reading instructions, colors, counts and finished size in the downloaded PDF.

For changing the section’s stitch count across rows, see increase and decrease placement.

For a C2C blanket graph or a tapestry crochet chart, see how to turn a photo into a crochet pattern.