Garment knitter
See the real width created by a legal repeat count.
Enter target size, swatch gauge, repeat multiple, edge stitches, and nearest rounding.
Compares achieved width with intended ease before casting on.
Convert knitting pattern gauge to your swatch gauge. Calculate cast-on stitches, row counts, stitch multiples, and pattern size adjustments.
A quick decision brief for this specific tool
Pattern and blocked-swatch stitch/row gauge, target dimensions, pattern counts, core repeat multiple, edge stitches, and explicit repeat-rounding policy
Legal target cast-on and row count, achieved target dimensions, width difference, and gauge-converted pattern counts and dimensions
Calculate raw counts from the measured swatch; round the repeated core up, down, or nearest; add edge stitches; then convert the legal counts back to achieved dimensions
Choose your path
Convert target and pattern counts through a measured blocked swatch while preserving core-repeat-plus-edge construction and exposing achieved dimensions.
See the real width created by a legal repeat count.
Enter target size, swatch gauge, repeat multiple, edge stitches, and nearest rounding.
Compares achieved width with intended ease before casting on.
Convert an existing pattern to a different gauge.
Enter original gauge/counts and measured swatch, then review converted stitches and rows.
Reconciles shaping and construction separately from the arithmetic.
Control whether the core rounds up or down.
Compare nearest, up, and down policies.
Gets a legal multiple-plus-edge count and understands the size tradeoff.
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The calculator converts stitches per 4 inches into stitches per inch, multiplies by target width, removes the entered edge stitches, rounds the repeated core using the selected policy, then adds the edge stitches back.
cast-on = target width x (your stitches per 4 in / 4)Pattern cast-on stitches are first converted to pattern width, then rebuilt using your gauge.
Because a legal repeat count may not equal the raw decimal stitch count, the result converts the rounded stitches and rows back into inches. Compare those achieved dimensions with the intended size before changing a pattern.
Updated: August 2026
Use the converted cast-on number to keep the finished width close to the designer's intended size.
Set the stitch multiple from the pattern so the calculated cast-on works with cables, lace, or ribbing.
Block the swatch the way you will finish the garment, then measure stitches and rows.
If stitch gauge is correct but row gauge differs, knit to length measurements instead of row counts.
Use blocked-swatch gauge to calculate a target cast-on and convert pattern counts while preserving a repeat such as multiple of 4 plus 2 edge stitches. Choose the rounding policy and see the achieved dimensions before knitting.