FiberTools

How do fiber arts calculators work?

Enter your gauge swatch measurements, yarn weight, or pattern details, the calculator applies standard fiber arts formulas to give you instant, accurate results.FiberTools calculators use CYC yarn weight standards, gauge mathematics, and pattern conversion formulas validated against industry references.

Why does gauge matter in knitting and crochet?

Gauge determines the final size of your project. Even one stitch per inch off gauge can make a garment several sizes too large or too small over 200 rows.Gauge varies by knitter tension, needle material, yarn fiber content, and stitch pattern, two crafters using the same yarn and hook size can produce swatches that differ by a full stitch per inch.

What are CYC yarn weight standards?

The Craft Yarn Council (CYC) defines 8 standard yarn weights: Lace (0), Fingering (1), Sport (2), DK (3), Worsted (4), Bulky (5), Super Bulky (6), and Jumbo (7).CYC standards help crafters substitute yarns reliably across patterns from different designers and countries.

What is the difference between knitting and crochet needle sizing?

Knitting uses needle sizes in US numbers (1–50) or metric millimeters. Crochet uses hook sizes in US letters (B/1 through S/35) or metric millimeters, which is the most universal sizing system.Metric millimeter sizing is recommended for precision since US letter and number systems vary by manufacturer, a US size G hook from one brand may measure 4.0mm while another measures 4.25mm.