Yarn Quantity Project
Calculator
Results
- Project area (m²)
- 0.35
- Yarn before allowance (g)
- 112
- Yarn needed (g)
- 123.2
- Yarn needed (kg)
- 0.1232
Craft results
| Project area (m²) | 0.35 |
| Yarn before allowance (g) | 112 |
| Yarn needed (g) | 123.2 |
| Yarn needed (kg) | 0.1232 |
formula-map diagram
- Project area (m²)
- 0.35
- Yarn before allowance (g)
- 112
- Yarn needed (g)
- 123.2
- Yarn needed (kg)
- 0.1232
Formula breakdown
Formula
m = (w × l ÷ 10000) × density × (1 + allowance)= 0.35
Note
Simplified model: these are standard craft estimates based on rectangular layouts, quoted gauge and nominal densities. Real fabric nap, directional prints, shrinkage, pattern matching, yarn lots and supplier SAP values vary, so always make a swatch or test piece and buy a little extra.
More in Crafts and sewing
See all →Frequently asked questions
How does yarn weight affect how much I need?+
Heavier yarns (bulky, super bulky) cover an area in fewer yards than fine yarns (fingering, lace) because each stitch uses more yarn length per stitch. This calculator adjusts total yardage needed based on the weight category and the project's finished dimensions.
Does stitch pattern change how much yarn I need for the same size?+
Yes significantly. Cables, ribbing, and textured stitches use notably more yarn than plain stockinette for the same finished dimensions because the yarn travels a longer path per stitch; add 15-30% for dense textured patterns.
Why does the calculator ask for gauge as well as dimensions?+
Yardage estimates are typically expressed as yards needed per square inch or per stitch at a reference gauge; your actual gauge (stitches and rows per inch) determines how many stitches fill your target dimensions and thus how much yarn that requires.
How much extra should I buy beyond the estimate?+
Buy at least 10% extra to cover swatching, gauge variance, and finishing details like seams or edging, and buy it from the same dye lot since lots can vary slightly in color. Running out mid-project with no matching dye lot left is a common frustration.
Is the estimate the same for garments and accessories?+
No, the calculator's estimate depends heavily on the project type because garments include shaping, ribbing, and finishing that use proportionally more yarn than a simple accessory like a scarf; select the closest project type for a more accurate figure.