Crafts & Sewing Tools

Free crafting, sewing and knitting calculators that run entirely in your browser — yarn quantity, knitting gauge, cross-stitch fabric, quilt backing and binding, bias tape, fabric yardage, soap lye (saponification), candle wax, resin volume, bead count, WPI, macramé cord, needle/hook sizes and even stitch spacing. Nothing is uploaded.

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Yarn Quantity Estimator (Knitting & Crochet)

Estimate how many yards, meters and skeins of yarn a knitting or crochet project needs by type, size, weight and craft.

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Knitting & Crochet Gauge Calculator

Turn a gauge swatch into cast-on stitch and row counts for any target width and length, in inches or centimeters.

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Cross-Stitch Fabric Size Calculator

Convert a stitch count and fabric count into finished design size and the fabric to cut, for Aida or over-2 linen.

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Quilt Backing & Batting Calculator

Work out backing yardage, how many fabric widths to seam and the batting size from your quilt top's dimensions.

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Quilt Binding Calculator

Calculate binding length, how many strips to cut and the yardage from your quilt's dimensions and strip width.

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Bias Tape / Continuous Bias Calculator

Find the fabric square that yields a length of continuous bias binding at a given strip width, plus the yardage.

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Fabric Yardage Calculator (Sewing)

Estimate the yards of fabric to buy by fitting rectangular pattern pieces across the bolt, with seam and shrinkage allowance.

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Soap Lye & Saponification Calculator

Calculate the NaOH lye, water and superfat for a cold or hot-process soap recipe from your oil weights.

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Candle Wax & Fragrance Load Calculator

Calculate the wax and fragrance-oil weight for a candle batch from container volume, container count, wax type and scent load.

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Epoxy Resin Volume Calculator

Work out mixed epoxy resin volume, weight and Part A / Part B split for a rectangular or round mold, coating or casting.

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Bead Count & Bead-Weaving Calculator

Estimate how many beads a strand or project needs from bead size and length, with beads per inch, per centimeter and grams required.

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Wraps-Per-Inch Yarn Weight Identifier

Identify an unlabeled yarn's weight from its wraps per inch, with the yarn-weight category, typical gauge and recommended needle and hook sizes.

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Macrame Cord Length Calculator

Calculate the total macrame cord to cut from finished length, knot density and number of working cords, including the folded cut length.

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Knitting Needle & Crochet Hook Size Converter

Convert knitting needle and crochet hook sizes between US, UK/Canadian and metric millimeters with instant lookup tables.

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Increase / Decrease Evenly Calculator

Work out exactly where to place increases or decreases to move evenly from your current stitch count to a target count.

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