Knitting chart paper, A4
Knitting chart paper on A4, ruled with cells wider than they are tall because knit stitches are.
Opens with these settings already loaded. Change anything you like, then download as PDF, PNG or SVG.
Gauge in stitches per 10 cm
UK, European and Australian patterns state gauge over 10 cm rather than 4 inches, and that is the number you already have if you knit from those patterns. Enter the stitch count and the row count over whatever distance you measured and the generator rules the cells to that ratio. The unit never comes into it, because a ratio has no unit: 22 stitches by 30 rows describes the same fabric whether you counted across 10 cm or 4 inches.
Why the cells are not square
A knit stitch is wider than it is tall, commonly somewhere near 5 stitches to 7 rows over the same distance. Chart a design on square cells and the knitted result comes out flatter than the drawing, so circles turn into wide ovals and lettering spreads sideways. The full explanation is here, including why the error gets worse on large motifs and is nearly invisible on small ones.
A4 for European pattern filing
Knitting publishing outside North America runs on A4, and most pattern PDFs from UK and Scandinavian designers are laid out for it. Charting on the same size means your working charts sit in the same folder and the same punched binder as the pattern they belong to, with no trimming. If you are in the US and want Letter, the Letter version is set up in inches.
Printing it accurately
This only measures correctly if your printer doesn't rescale the page. In the print dialog set Scale: 100%, not "Fit to page" or "Shrink oversized pages". If you're not sure it worked, print the calibration page, measure the ruler on it with a real ruler, and it will tell you exactly what your printer is doing to the page.