Interfacing Calculator
Calculate how much interfacing you need based on the number of pieces, average area, and waste factor. Get yards to purchase.
Inputs
Results
Yards to Buy
0.5 yd
How to Use This Calculator
- Enter the number of pattern pieces needing interfacing and average piece area (sq in).
- Set interfacing width (inches) -- typically 20-22 in for woven, 60 in for non-woven.
- Set waste factor (%) -- 15-20% for small pieces, 10% for large pieces.
- Review linear yards to buy, total area (sq in), and total sq feet.
- Match interfacing weight to fabric weight -- lightweight for chiffon, heavyweight for jacket facings.
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