Shawls grow by row — later rows are much longer than earlier ones, so when your ball is half gone, you're only about one-third done with the rows.
A top-down triangular shawl starts with just a few stitches and each increase row is longer than the last. This exponential growth means the final 20% of rows consume roughly 40% of the total yardage. The 'half-ball rule' is a useful heuristic: when you reach the halfway point of your yarn ball by weight, you're approximately one-third of the way through the row count. Crescent shawls and asymmetric pi shawls have similar growth curves. Lace shawls use slightly less yarn than stockinette per row because of the open mesh (about 15% less), but they're typically larger, so total yardage is similar. A standard DK triangular shawl takes 500–800 m.
Calculated with 8 yarn weights, size M, 15% reserve. Pattern: Knitting → Stockinette · Crochet → Double crochet.
| Yarn weight | Meters per 100 g | Balls needed | Total meters | Approx grams |
|---|---|---|---|---|
| Lace | 600–1200+ m / 100g | 1 | 782 m | ~98 g |
| Fingering | 350–550 m / 100g | 3 | 883 m | ~205 g |
| Sport | 250–350 m / 100g | 3 | 792 m | ~264 g |
| DK | 200–300 m / 100g | 4 | 831 m | ~332 g |
| Worsted / Aran | 150–220 m / 100g | 4 | 705 m | ~381 g |
| Bulky | 80–140 m / 100g | 6 | 559 m | ~508 g |
| Super Bulky | 40–80 m / 100g | 7 | 387 m | ~645 g |
| Jumbo | < 40 m / 100g | 8 | 235 m | ~782 g |
| Yarn weight | Meters per 100 g | Balls needed | Total meters | Approx grams |
|---|---|---|---|---|
| Lace | 600–1200+ m / 100g | 2 | 938 m | ~117 g |
| Fingering | 350–550 m / 100g | 3 | 1059 m | ~246 g |
| Sport | 250–350 m / 100g | 4 | 950 m | ~317 g |
| DK | 200–300 m / 100g | 4 | 997 m | ~399 g |
| Worsted / Aran | 150–220 m / 100g | 5 | 846 m | ~457 g |
| Bulky | 80–140 m / 100g | 7 | 671 m | ~610 g |
| Super Bulky | 40–80 m / 100g | 8 | 465 m | ~774 g |
| Jumbo | < 40 m / 100g | 10 | 282 m | ~938 g |
The yardage multiplier (×) shows how much more yarn each stitch uses relative to stockinette / double crochet baseline. Sorted by yarn efficiency.
Open mesh saves yarn
Baseline—minimum yardage
Bulkier, +20%
Crossings eat +35%
Two-yarn floats
Minimum draw
Open motifs
Pieced motifs
Airier, lighter
Between sc and dc
Tightest fabric
Fabric area scales from XS to 2XL. Use this to understand why larger sizes need significantly more yarn.
| Size | Area multiplier | Fabric area (m²) |
|---|---|---|
| XS | ×0.78(-22%) | 0.66 m² |
| S | ×0.88(-12%) | 0.75 m² |
| M | ×1.00(baseline) | 0.85 m² |
| L | ×1.14(+14%) | 0.97 m² |
| XL | ×1.28(+28%) | 1.09 m² |
| 2XL | ×1.42(+42%) | 1.21 m² |
They're empirical multipliers measured against stockinette (1.0). Cables and stranded colourwork eat more yarn because of the extra bulk; lace and filet use less. The numbers are averages — if your tension is unusual, drop in a real swatch in advanced mode and we'll override them.
Simple mode falls back to typical gauges for the yarn weight you picked. For wearables we still recommend a 10×10 cm swatch — once you have one, switch to advanced mode and the maths gets sharper.
The base calc is area-based. Tricky shapes (raglan, A-line, hooded) are absorbed by the 10–20% buffer; for full-body cabled sweaters or steeked cardigans we suggest pushing it to 25%.
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