All calculators
Every FiberCalc tool runs in your browser with inches/cm and yards/meters—start with the blanket yarn calculator (about 1,815 yd for a 50×60″ worsted throw) or pick any card below.
Blanket Yarn Calculator
Estimate skeins, yards, and grams of yarn for knit or crochet blankets by size and yarn weight.
Yarn Sweater Calculator
Estimate how much yarn you need for a sweater by size, yarn weight, and knit or crochet.
Yarn Hat Calculator
Calculate yarn yardage and skeins for knit or crochet hats by circumference and depth.
Yarn Scarf Calculator
Estimate yarn needed for scarves and wraps by dimensions and yarn weight.
Amigurumi Yarn Calculator
Estimate yarn for amigurumi projects from finished height and yarn weight.
Yarn Substitution & Weight Converter
Convert yardage between Craft Yarn Council yarn weights and grams, ounces, yards, meters.
Knitting Gauge Calculator
Convert swatch stitches and rows to gauge, finished size, and resized pattern stitch counts.
Crochet Blanket Size & Stitch Calculator
Calculate starting chain, stitches across, and rows for a crochet blanket from gauge and size.
Increase & Decrease Evenly Calculator
Space increases or decreases evenly across a row or round with clear instructions.
Cast-On Calculator
Calculate how many stitches to cast on from gauge, desired width, ease, and ribbing.
Fabric Yardage Calculator
Estimate fabric yards or meters for garments, curtains, upholstery, and tablecloths.
Quilt Size Calculator
Plan quilt dimensions from block grid, sashing, and borders — or fit blocks to a target size.
Quilt Backing Calculator
Calculate backing fabric yardage, panel count, and seam orientation for any quilt size.
Quilt Binding Calculator
Find binding strip count and fabric yardage from quilt perimeter and strip width.
Half-Square Triangle & Block Cutting Calculator
Calculate HST square sizes and yield for 2-at-a-time, 4-at-a-time, and 8-at-a-time methods.
Cross-Stitch Fabric (Aida Count) Calculator
Convert stitch counts and Aida count into design size and fabric cut size with margins.
Needle & Hook Size Converter
Convert knitting needle and crochet hook sizes between US, UK, and metric millimeters.
Seam Allowance & Pattern Grading Helper
Add seam allowances to finished measurements and grade pattern measurements between sizes.