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Yardage, gauge and shaping math for knitters and crocheters. Covers how much yarn a project consumes, how to convert a pattern to…
Yardage, cutting layout and shrinkage math for garment sewing, home decor and quilting. Covers buying fabric off the bolt…
Cost, consumption and production-time math for apparel decorators. Covers screen print quoting and ink yield, embroidery stitch…
Batch and volume math for studio makers who mix materials by weight: casting resin and silicone, epoxy flood coats, container…
Bench math for jewelers and leatherworkers: metal weight and value, karat alloying, ring blank layout, and getting the most…
Lumber buying, cut-list and wood-science math for woodworkers. Covers board feet, moisture content and seasonal movement, shelf…
Material, time, cost and calibration math for desktop and shop digital fabrication. Covers filament and resin consumption, print…
Optical and exposure math for photographers and videographers: depth of field and hyperfocal focusing, sensor crop equivalence…
Most used in crafts, textiles, 3d printing & photography
- Yarn Yardage & Skeins CalculatorArea-density (yards per square inch) methodThis calculator turns a swatch into a shopping list. Measure your swatch, tell it how much yarn went into it, give it the…
- Knitting Gauge & Cast-On CalculatorCraft Yarn Council gauge convention (4 in / 10 cm swatch)Enter what your blocked swatch actually measures and this calculator tells you how many stitches to cast on and how many rows…
- Fabric Yardage CalculatorCut-length nesting method (usable width after selvedge)Tell this calculator the size of your pattern piece, how many you need, and how wide your fabric is, and it works out how many…
- Curtain Fabric & Fullness CalculatorWorkroom drapery convention (fullness ratio method)Enter your rod width, the drop you want and the fabric you have chosen, and this calculator returns the number of fabric widths…
- Quilt Binding CalculatorDouble-fold (French) binding geometryEnter your quilt's finished size and this calculator returns the length of binding you need, the number of strips to cut, and…
- Quilt Backing Yardage CalculatorLongarm loading convention (4 in overhang per side)Enter your quilt top's finished size and this calculator gives you the backing yardage, including the overhang every longarm…
- Half Square Triangle (HST) CalculatorQuarter-inch patchwork seam conventionTell this calculator the finished size of the half square triangle you want and it gives you the square to cut, by whichever…
- Screen Printing Pricing CalculatorCost-plus quoting on a target gross marginThis calculator builds a screen printing quote the way a shop's books do: blanks, screen setup, ink, press time at your labour…
- Embroidery Stitch Count EstimatorStitch-density geometry (area ÷ stitch footprint)Embroidery is quoted per thousand stitches, but you only learn the stitch count after the design has been digitised — which is…
- Resin Mold Volume & Mixing CalculatorMix ratio by weight or by volume, per the resin data sheetTwo questions decide whether a resin pour succeeds: how much to mix, and how to split it between the two components. This…
- Epoxy Coverage & Flood Coat CalculatorUS gallon = 231 in³ exactly (NIST SP 811)Epoxy is sold by volume and applied by thickness, so the only calculation that matters is area × depth. This calculator does it…
- Candle Wax CalculatorWeight-based fragrance loading (IFRA usage limits)Wax is sold by weight and containers are sold by volume, so every candle batch starts with a conversion. This calculator does…