Sewing & Tailoring
Sewing calculators for pattern grading, fabric requirements, seam allowance, elastic length, and custom fit measurements.
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Custom Fit Adjustment Calculator
Calculate pattern adjustments at bust, waist, and hip by comparing your body measurements to the pattern. Get per-seam adjustments for accurate fitting.
Elastic Length Calculator
Calculate the correct cut length for elastic based on body measurement, desired stretch ratio, and overlap for joining. Get comfort recommendations.
Fabric Requirement Calculator
Estimate yards of fabric needed for your garment based on type, size, fabric width, and layout efficiency. Works for shirts, pants, dresses, jackets, and skirts.
Gathering Ratio Calculator
Calculate the fabric length needed for gathered sections based on finished length and fullness ratio. Typical ratios: 1.5× for light, 2× for medium, 3× for heavy gathering.
Interfacing Calculator
Calculate how much interfacing you need based on the number of pieces, average area, and waste factor. Get yards to purchase.
Pattern Grading Calculator
Calculate adjusted measurements for grading sewing patterns between sizes. Get proportional adjustments for bust, waist, hip, shoulder, and sleeve.
Pleating Calculator
Calculate how much fabric you need for knife, box, or inverted box pleats. Enter finished width, pleat depth, count, and type.
Seam Allowance Calculator
Calculate the total extra fabric needed for seam allowances across all pattern pieces. Enter piece count, seam allowance width, and total seam length.
Thread Consumption Calculator
Calculate how much thread you need for your sewing project based on total seam length, stitch type, and stitch length. Includes 15% safety margin.
Zipper Length Calculator
Calculate the correct zipper length for your garment opening. Accounts for zipper type (regular, invisible, separating) and seam allowances.