Sewing Calculators
Estimate fabric yardage for curtains, dresses, upholstery, and general sewing projects. Every calculator supports imperial and metric units with purchase rounding to standard shop increments.
Select a calculator below to get started, or browse our sewing guides on the blog for tips on measuring and planning your next project.
Latest in Sewing
- Thread Consumption CalculatorCalculator ·
- Curtain Lining CalculatorCalculator ·
- Button Spacing CalculatorCalculator ·
Fabric Yardage Calculator
Fabric yardage for any sewing project — pattern repeat, 42-60-inch widths, nap and shrinkage allowances, and ⅛-yard or 10-cm shop purchase rounding.
Curtain Fabric Calculator
Curtain fabric — fullness ratios for pencil pleat, pinch pleat, eyelet, and tab top headings; pattern repeat rounding; imperial or metric output ready.
Upholstery Fabric Calculator
Upholstery fabric for sofas, chairs, and cushions — armchair piece list with 4-inch tuck-in, 54 or 60-inch widths, pattern repeat, nap, and 10-15% waste.
Bias Binding Calculator
Continuous bias binding yield from a fabric square — enter square size and strip width (2.25-inch traditional quilt binding) for total bias tape inches.
Dress Fabric Yardage Calculator
Dress fabric yardage — style multipliers for shift, A-line, fit-and-flare, and circle skirts; sleeve allowance; fabric width 45/54/60-inch; shop rounding.
Roman Blind Fabric Calculator
Roman blind fabric and lining yardage — 1.5-inch hems, 4-inch dowel-pocket bottom, 2-inch top mount, pattern repeat handled, and 6-8-inch pleat spacing.
Elastic Calculator for Sewing
Elastic length for waistbands, cuffs, casings, and necklines — woven 75%, braided 80%, knitted 85% stretch ratios with standard overlap and width sizing.
Button Spacing Calculator
Even button spacing for shirts, blouses, coats, and cardigans — placement math plus a ⅛-inch (3 mm) buttonhole ease over the button diameter.
Curtain Lining Calculator
Work out how much lining your curtains need from your face-fabric widths — shorter lining drops, no pattern repeat, plus optional interlining.
Thread Consumption Calculator
Estimate the thread a sewing project needs by stitch type — straight, zigzag, serger or coverstitch — with needle, looper and spool counts.