The pattern says 20 stitches per 4 inches; your yarn says 16. Every count in the pattern converts by that one ratio: cast-ons, markers, row counts. Enter both gauges and any number from the pattern; its converted twin comes back. One gauge adjustment, applied everywhere, keeps the pattern’s proportions.
The Two Gauges
That number counts
Work Instead
160stitches
for the pattern’s 200 · ratio 0.800
Convert every number in the pattern by its own ratio: stitches by 0.800, rows by 0.786, and snap anything inside a stitch repeat to the repeat.
- The pattern’s 200 measures40.0 in
- Yours at that size160 sts
- Stitch ratio0.800
- Row ratio0.786
The Formula
your count = pattern’s count × (your gauge ÷ pattern’s gauge)One ratio converts everything: a 200-stitch chest at 20-per-4 becomes 160 at 16-per-4 and measures the same 40 inches. Rows convert by the row-gauge ratio, which is rarely the same number, the trap in every “just re-gauge it” plan.
Worked Example
A worsted pattern (20 sts, 28 rows per 4 in) knit in bulky (16 sts, 22 rows):
- Stitch ratio: 16 ÷ 20 = 0.8, the 200-stitch chest becomes 160.
- Row ratio: 22 ÷ 28 = 0.786: “knit 56 rows” becomes 44.
- Yarn: the same square inches at a heavier gauge, expect bulky-sweater yardage (the knitting yarn calculator‘s bulky column), not the pattern’s worsted figure.
What Converts Cleanly, What Needs Care
- Clean: plain widths: cast-ons, chest counts, marker spacing, plain lengths in rows.
- Care: shaping written as counted repeats (“decrease every 6th row 8 times”): convert the total rows and redistribute with the decrease calculator.
- Won’t convert: stitch-pattern repeats. A 12-stitch cable is 12 stitches at any gauge; converted counts snap to the repeat, so round to it.
Assumptions and Defaults
- Counts round to whole stitches and rows; even counts round to even when the original was even.
- The finished measurements stay the pattern’s: that’s the point. Changing size too? Scale the number first, then convert.
- Fabric behaves differently at different gauges: bulky drapes stiffer at sweater shapes drafted for worsted. Swatch for fabric, not just number.
Conversion Questions, Answered
Can I knit a pattern at a different gauge?
Yes, you can knit a pattern at a different gauge by multiplying every count by your gauge ÷ the pattern’s gauge. The 200-stitch worsted chest becomes 160 stitches in bulky and measures exactly the same; rows convert by their own ratio, and stitch-pattern counts round to the nearest repeat.
Does converting gauge change how much yarn I need?
Yes, converting gauge changes the yarn entirely, because the yardage follows the new gauge rather than the pattern’s. A worsted sweater reworked in bulky needs bulky-sweater yardage, which means fewer yards of a thicker yarn and usually more grams.
How do I convert “decrease every 6 rows, 8 times” to my gauge?
To convert an instruction like decrease every 6 rows, 8 times, convert the span rather than the recipe: 48 pattern rows become about 38 of yours, still with 8 decreases, now roughly every 5th row. When the division comes out uneven, the decrease calculator spaces them exactly.
Is converting gauge the same as resizing?
No, converting gauge keeps the size and changes the yarn, whereas resizing keeps the yarn and changes the size by scaling counts by the new size ÷ the old size. To do both, resize first and then convert, so each step works from clean numbers.