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Knitting Gauge Calculator

Convert knitting pattern gauge to your swatch gauge. Calculate cast-on stitches, row counts, stitch multiples, and pattern size adjustments.

Use this result well

Inputs that matter
Pattern and blocked-swatch stitch/row gauge, target dimensions, pattern counts, core repeat multiple, edge stitches, and explicit repeat-rounding policy
Output to expect
Legal target cast-on and row count, achieved target dimensions, width difference, and gauge-converted pattern counts and dimensions
How it works
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
  • A repeat such as multiple of 4 plus 2 means a core multiple of 4 and 2 separate edge/extra stitches.
  • Arithmetic does not preserve ease, shaping, borders, cables/lace, fabric behavior, or blocked gauge automatically; reconcile every affected instruction.

Choose your path

Built around the job you need to finish

Convert target and pattern counts through a measured blocked swatch while preserving core-repeat-plus-edge construction and exposing achieved dimensions.

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.

Pattern adapter

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.

Repeat-sensitive knitter

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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Reference & details

How it works

Gauge conversion

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 scaling

Pattern cast-on stitches are first converted to pattern width, then rebuilt using your gauge.

Achieved dimensions

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

Example Scenarios

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.

Common Mistakes to Avoid

Measuring an unblocked swatch

Block the swatch the way you will finish the garment, then measure stitches and rows.

Forcing row gauge to match

If stitch gauge is correct but row gauge differs, knit to length measurements instead of row counts.

FAQ

No. Needle material, yarn, technique, fabric properties, washing, and blocking all affect gauge. Swatch with the intended materials and decide whether to change the fabric or recalculate counts.

A stitch multiple is the repeated core requirement. For multiple of 4 plus 2, enter 4 as the core repeat and 2 as edge or extra stitches; the calculator rounds the core and then restores the extra stitches.

Many patterns can be worked to a measured length. Stitch gauge controls width and fit more directly.

Nearest, up, and down can produce different legal stitch counts. The result shows the achieved width for the selected policy so you can evaluate the size tradeoff.

About Knitting Gauge Calculator

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.