Partial Skein Yarn Yardage Estimator
If you knit or crochet, you’ve likely encountered leftover partial skeins of yarn. Knowing how much yarn remains helps plan future projects, but requires a bit of math. This tool estimates yardage quickly: weigh your partial skein, input the numbers below, and get an instant result. Note that this is an approximation; factors affecting accuracy are explained in the details below.
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Partial Skein Yarn Yardage Estimator
How the Estimation Works
The calculation uses a simple proportional formula:
Remaining Yardage = (Remaining Weight ÷ Original Weight) × Original Yardage
Since yarn yardage correlates directly with weight, a 100g skein labeled 200 yards gives 2 yards per gram (200 ÷ 100). If 35g remains, you have approximately 70 yards (35g × 2 yards/g). This assumes consistent density—generally reliable within the same dye lot.
Why accuracy varies slightly:
- Yarn tension: Loose winding vs. tight balls affect weight minimally.
- Moisture absorption: Humidity can add negligible weight.
- Fiber blends: Density may differ slightly between batches.
- Label accuracy: Manufacturer yardage/weight specs are averages.
Practical tip: Keep yarn labels until projects are complete. For lost labels, check Ravelry or the manufacturer’s website for original specifications.
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