How to Resize a Knitting Pattern
Pattern resizing uses a simple ratio: divide the desired size by the original size, then multiply that ratio by the original stitch and row counts. If a pattern is written for a 10-inch width and you want 14 inches, the ratio is 1.4 — so 120 stitches becomes 168 stitches.
This works for both scaling up and scaling down. The same math applies to sewing patterns when you need to adjust the number of repeats or the overall dimensions of a piece.
Common Pattern Resize Ratios
| Resize | Ratio | 100 stitches becomes |
|---|---|---|
| Reduce by 25% | 0.75 | 75 stitches |
| Reduce by 10% | 0.90 | 90 stitches |
| No change | 1.00 | 100 stitches |
| Increase by 10% | 1.10 | 110 stitches |
| Increase by 25% | 1.25 | 125 stitches |
| Increase by 50% | 1.50 | 150 stitches |
| Double | 2.00 | 200 stitches |
Resizing Tips by Project Type
| Project | Resize Consideration | Extra Step |
|---|---|---|
| Sweater | Resize each panel separately | Recalculate armhole and neckline shaping |
| Hat | Adjust crown decreases | Check decrease intervals after resize |
| Blanket | Straightforward ratio scaling | Recalculate yarn needed |
| Socks | Resize circumference and foot length separately | Adjust heel turn stitches |
| Sewing garment | Scale pattern pieces proportionally | Re-mark notches and grain lines |
FAQ
Does resizing affect my yarn requirements?
Yes. Yarn usage scales roughly with the square of the resize ratio. If you scale a pattern to 150% in both width and height, you'll need approximately 2.25 times the original yarn (1.5 x 1.5). Use our yarn yardage calculator to estimate the new amount.
Can I resize just the width without changing the height?
Yes. Simply adjust only the stitch count while keeping the row count the same. This calculator assumes proportional scaling, but you can manually override rows for one-directional resizing.
What about stitch pattern repeats after resizing?
After calculating the new stitch count, round to the nearest multiple of your stitch pattern repeat. For example, if your cable pattern repeats every 8 stitches and the calculator gives 170, round to 168 or 176.
Related Tools
- Stitch Calculator — calculate cast-on stitches from gauge
- Knitting Gauge Calculator — measure your swatch accurately
- Yarn Yardage Calculator — estimate yarn for the resized project