Work out how many stitches you need for any width, then round to fit your stitch pattern's repeat so the pattern lines up perfectly.
Exact proportional count
Add stitches to expand width
Prior to whole-number rounding
Difference of 0.00 inches from goal

Many stitch patterns repeat over a set number of stitches. A pattern might say "multiple of 6 + 2", meaning the total must be some number of 6-stitch repeats plus 2 extra stitches for the edges, such as 14, 20 or 26 stitches.
If your stitch count doesn't fit the multiple, the pattern won't line up at the end of the row: a shell will be cut in half, or a cluster won't have room. This calculator finds the stitch count closest to your target width that fits the repeat exactly.
Your sample has 30 stitches across 7.5 inches, and you want a piece 24 inches wide. Your stitch pattern is a multiple of 6 + 2.
98 stitches comes out about 24.5 inches wide, the closest fit to 24 inches that keeps the pattern intact. To start the piece, use the chain calculator to add the right number of turning chains.
Want to make a pattern wider or narrower than written? Measure the gauge from your swatch, enter the new width, and use the pattern's multiple. You'll get a stitch count that keeps the design working at the new size.
Remember that changing the width also changes how much yarn you need. Run the new size through the yarn calculator before you buy.
Stitches per inch = sample stitches ÷ sample width. Raw stitches = target width × stitches per inch. With a repeat: repeats = round((raw stitches − extra) ÷ multiple), and final stitches = repeats × multiple + extra.
Your stitch count must be a multiple of 8, plus 3 extra stitches, such as 19, 27 or 35. The extra stitches usually balance the pattern at the edges.

Gauge is the translation key between the designer's hands and yours. Learn how to make a swatch that tells the truth, measure it, match the pattern, and use the math to size any project.
Read guide
Every part of a crochet pattern explained, from skill levels and multiple sizes to repeats, stitch counts, shaping language, charts and schematics, plus what to do when something seems wrong.
Read guideCalculate stitch density and precise rows and stitches needed for your target project dimensions.
Calculate exact starting foundation chain count with turning chain and pattern repeat adjustments.
Evenly distribute increase stitches across any row or round with step-by-step crochet instructions.