🧵 Sewing & Crafts Calculators
Fabric, thread and pattern math for makers.
Choose a Calculator
Subwoofer Box Calculator
Calculate enclosure volume, tuning frequency, and port size for subwoofer boxes.
Open calculator →Thread Calculator
Determine thread size, needle type, and tension settings for sewing projects.
Open calculator →Circle Skirt Calculator
Waist radius and fabric size for a full, half or quarter circle skirt.
Open calculator →Fabric Calculator
Yards of fabric needed for a number of cut pieces.
Open calculator →Knitting Gauge Calculator
Turn your stitch gauge into the cast-on stitches for any width.
Open calculator →Yarn Calculator
Estimate how much yarn you need for knitting or crochet projects.
Open calculator →Quilt Calculator
Estimate fabric yardage and binding for a quilt from block size and quilt dimensions.
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