All Free Sewing Calculators
Browse all 113 free calculators across 17 categories. Every tool is free, works on any device, and requires no signup.
Calculate fabric quantities, yardage, width conversions and shrinkage for any sewing project.
Fabric Yardage Calculator
Calculate how much fabric you need based on project dimensions and fabric width.
Pattern Fabric Calculator
Work out total fabric needed for a sewing pattern with multiple pieces.
Bias Binding Calculator
Calculate fabric needed to make continuous bias binding strips.
Bias Tape Calculator
Calculate the fabric square size needed to make bias tape and see how much tape a given square will yield.
Interfacing Calculator
Work out how much interfacing you need for garment pieces.
Lining Fabric Calculator
Calculate lining fabric requirements for garments and bags.
Fabric Width Converter
Convert fabric requirements between different bolt widths.
Bolt End Calculator
Check if a bolt end or remnant has enough fabric for your project.
Fabric Shrinkage Calculator
Calculate how much extra fabric to buy to account for pre-wash shrinkage.
Directional Fabric Calculator
Calculate extra fabric needed for one-way prints, nap or directional fabrics.
Fabric Weight Converter
Convert between GSM, oz/yd² and oz/linear yard fabric weight units.
Garment Cost Calculator
Calculate total garment cost from fabric, notions, thread and sewing time with retail comparison.
Pattern Matching Calculator
Calculate extra fabric needed for pattern matching across multiple garment pieces.
Nap Layout Calculator
Calculate extra fabric needed for one-way, nap and directional pattern layouts.
Pattern grading, ease calculations, and body measurement adjustments for perfect fit.
Pattern Sizing Calculator
Find the right pattern size from your body measurements.
Ease Calculator
Calculate wearing ease and design ease for comfortable garments.
Grading Calculator
Grade a pattern up or down between sizes with correct increments.
Pattern Scaling Calculator
Scale a pattern piece by percentage for enlarging or reducing.
Bust Adjustment Calculator
Calculate full bust or small bust adjustments for bodice patterns.
Waist Adjustment Calculator
Adjust waist measurements on skirt and trouser patterns.
Hip Adjustment Calculator
Calculate hip adjustments for skirts, trousers and dress patterns.
Length Adjustment Calculator
Lengthen or shorten pattern pieces at the correct adjustment lines.
Sleeve Length Calculator
Calculate correct sleeve length from shoulder to wrist measurements.
Neckline Calculator
Calculate neckline dimensions and binding length for various neckline styles.
Seam allowances, darts, pleats, gathers, hems and construction detail calculations.
Seam Allowance Calculator
Calculate seam allowance amounts and adjust pattern pieces accordingly.
Seam Allowance Fabric Calculator
Calculate total fabric needed for multiple pattern pieces with seam allowances added to every edge, including waste percentage and cutting layout.
Dart Calculator
Calculate dart dimensions for shaping bodices, skirts and trousers.
Pleat Calculator
Work out fabric needed for box pleats, knife pleats and inverted pleats.
Gather Calculator
Calculate fabric width needed for gathered sections based on fullness ratio.
Ruffle Calculator
Work out fabric requirements for ruffles and flounces.
Tuck Calculator
Calculate fabric needed for pin tucks, released tucks and decorative tucks.
Piping Calculator
Calculate bias strip and cord needed for piping and welting.
Welt Pocket Calculator
Calculate dimensions for single and double welt pockets.
Zipper Length Calculator
Determine the correct zipper length for garments and projects.
Hem Calculator
Calculate hem allowances and fabric needed for different hem types.
Quilt sizing, binding, backing, blocks, sashing, borders and batting calculations.
Quilt Size Calculator
Calculate quilt dimensions for standard bed sizes with drop allowances.
Quilt Binding Calculator
Calculate binding strip fabric and length for finishing quilts.
Quilt Backing Calculator
Work out backing fabric needed with seaming for wide quilts.
Quilt Block Calculator
Calculate number of blocks and fabric for a quilt layout.
Strip Piecing Calculator
Calculate strip quantities for strip-pieced quilt blocks and designs.
Half Square Triangle Calculator
Calculate fabric and cutting sizes for half-square triangle units.
Fat Quarter Calculator
Work out how many pieces you can cut from fat quarters.
Quilt Batting Calculator
Calculate batting size needed with overhang for quilting.
Sashing Calculator
Calculate sashing strip quantities and fabric for quilt layouts.
Border Calculator
Calculate fabric needed for single or multiple quilt borders.
Quilt Sandwich Calculator
Calculate batting and backing sizes needed for a quilt top including overhang allowances.
Quilt Label Calculator
Calculate label dimensions and fabric needed for quilt care labels.
Curtain fabric, lining, tracks, roman blinds and window treatment calculations.
Curtain Fabric Calculator
Calculate fabric needed for curtains with fullness, pattern repeat and hem allowances.
Curtain Lining Calculator
Work out lining fabric and interlining for professional curtains.
Roman Blind Calculator
Calculate fabric, lining, rods and tape for roman blinds.
Pelmet Calculator
Calculate fabric and board dimensions for pelmets and valances.
Curtain Track Calculator
Work out curtain track or pole length for windows.
Curtain Weight Calculator
Calculate the weight of finished curtains for track load capacity.
Tie-Back Calculator
Calculate fabric and dimensions for curtain tie-backs.
Tab Top Calculator
Calculate tab dimensions and fabric for tab-top curtains.
Eyelet Curtain Calculator
Calculate eyelet spacing, heading fabric and ring quantities.
Pencil Pleat Calculator
Calculate fabric and tape for pencil pleat curtain headings.
Cushions, duvet covers, tablecloths, napkins and home furnishing calculations.
Cushion Cover Calculator
Calculate fabric for cushion covers with zip or envelope back.
Duvet Cover Calculator
Calculate fabric for duvet covers in standard UK sizes.
Pillowcase Calculator
Work out fabric for standard, housewife or Oxford pillowcases.
Table Runner Calculator
Calculate fabric for table runners with overhang.
Tablecloth Calculator
Calculate fabric for round, square or rectangular tablecloths.
Napkin Calculator
Work out fabric needed for a set of cloth napkins.
Bed Skirt Calculator
Calculate fabric for gathered or tailored bed skirts.
Bolster Calculator
Calculate fabric for cylindrical bolster cushion covers.
Thread quantities, fabric calculations, hoop sizing and stabiliser requirements.
Embroidery Thread Calculator
Estimate thread consumption for machine embroidery designs.
Cross Stitch Fabric Calculator
Calculate fabric size needed for cross stitch patterns.
Hoop Size Calculator
Find the right embroidery hoop size for your design.
Stabiliser Calculator
Calculate stabiliser type and quantity for embroidery projects.
Embroidery Design Sizing Calculator
Scale embroidery designs and calculate stitch counts.
Thread Conversion Calculator
Convert between thread weight systems and estimate spool needs.
Aida Count Calculator
Calculate finished design size based on Aida cloth count.
Embroidery Floss Calculator
Estimate hand embroidery floss skeins needed for a project.
Buttons, elastic, ribbon, snaps, boning and other sewing notions calculations.
Button Spacing Calculator
Calculate even button spacing and placement for garments.
Elastic Calculator
Calculate elastic length for waistbands, cuffs and casings.
Ribbon Calculator
Work out ribbon length needed for trims, bows and decoration.
Hook and Eye Calculator
Calculate hook and eye spacing and quantities for closures.
Snap Spacing Calculator
Calculate even snap placement and quantities.
Boning Calculator
Calculate boning lengths and quantities for corsets and bodices.
Webbing Calculator
Calculate webbing length for bag straps, belts and hardware.
Velcro Calculator
Calculate hook-and-loop tape length for closures and fastenings.
Hemming, taking in, letting out, tapering and garment alteration calculations.
Hem Shortening Calculator
Calculate new hem position and fabric to remove when shortening.
Taking In Calculator
Calculate how much to take in at seams for a smaller fit.
Letting Out Calculator
Check seam allowances and calculate letting-out possibilities.
Tapering Calculator
Calculate tapering amounts for gradual seam adjustments.
Shoulder Adjustment Calculator
Calculate shoulder width and slope adjustments.
Crotch Depth Calculator
Calculate crotch depth adjustments for trousers.
Rise Adjustment Calculator
Adjust trouser rise for comfort and fit.
Armscye Calculator
Calculate armscye (armhole) circumference and adjustments.
Trouser Hem Calculator
Calculate new hem position and fabric needed for trouser length alterations.
Skirt Hem Calculator
Calculate new hem position and fabric for skirt length alterations.
Stitch calculations, thread consumption, fabric costs and geometric pattern maths.
Stitch Per Inch Calculator
Calculate stitch length settings and stitches per inch conversions.
Thread Consumption Calculator
Estimate total thread needed for seaming a garment.
Fabric Cost Calculator
Calculate total fabric cost from meterage and price per metre.
Pattern Piece Area Calculator
Estimate the area of pattern pieces for fabric layout planning.
Circle Skirt Calculator
Calculate radius, fabric and cutting layout for circle skirts.
Gored Skirt Calculator
Calculate gore panel dimensions for 4, 6, 8 or 12 gore skirts.
Yoke Calculator
Calculate yoke dimensions for skirts and bodices.
Flounce Calculator
Calculate inner and outer radii for circular flounces.
Optimise fabric cutting layouts, minimise waste and plan pattern piece placement.
Buttonholes, closures, trims and garment detail calculations.
Fabric properties, shrinkage prediction and fiber content calculations.
Zip lengths, closures and garment construction detail calculations.
Waistbands, closures and garment construction detail calculations.
Waistband Calculator
Calculate fabric cut size, interfacing dimensions, elastic length and notions for any waistband type.
Sleeve Ease Calculator
Calculate sleeve cap ease based on armhole measurement, garment style and fabric type.
Lining Calculator
Calculate lining fabric needed from shell pattern measurements and garment type.
Placket Calculator
Calculate button placket dimensions, button spacing and buttonhole length for garment construction.
Dart manipulation, bodice block and pattern construction calculators.
Useful reference guides and charts for sewing, fabrics and garment construction.
Common Fabric Widths Reference
Standard fabric bolt widths from 90cm to 150cm and which fabric types come in each.
Sewing Machine Needle & Thread Guide
Needle types, sizes and recommended fabric pairings with thread weight chart.
Standard Seam Allowances
Standard seam allowances from 6mm to 25mm with UK vs US pattern conventions.
UK Dress Size Measurement Chart
UK dress sizes 6 to 22 with bust, waist and hip measurements plus US and EU equivalents.
Why Use SewCalcs?
Every calculator on this page is completely free, requires no signup, and works on any device. Get accurate results instantly with clear breakdowns you can trust.
SewCalcs gives you 113+ specialist calculators across 17 categories. Results include detailed breakdowns and let you input your own prices for cost estimates tailored to your needs.