Fabric Calculator
Calculate fabric yardage for sewing and quilting projects with seam allowance, directional prints, waste buffer, and cutting layout estimates.
Why Use a Fabric Calculator?
Sewing and quilting projects fail when you buy too little fabric or waste money on excess yardage. This calculator estimates how much fabric you need based on finished piece size, seam allowance, fabric width, piece count, and optional safety margin.
How Yardage Is Calculated
The tool adds seam allowance to each finished dimension, then packs cut pieces across your fabric width. When directional prints are disabled, it can rotate pieces 90° for a tighter layout. Directional prints add a 10% buffer because all pieces must align with the fabric grain.
Standard Fabric Widths
Quilting cotton is commonly 44-45 inches wide. Home decor and fleece often run 54-60 inches. Quilt backing can be 90-108 inches. Pick the width you plan to buy so the layout matches the store bolt.
Related tools: Cross Stitch Size Calculator for needlework sizing, Baking Pan Size Converter for recipe scaling, and Cooking Converter for kitchen measurements.
Frequently Asked Questions
How much extra fabric should I buy?
Most sewers add 10% for shrinkage and cutting errors. Use 15-20% for plaids, large motifs, or beginner projects.
What seam allowance should I use?
Quilting typically uses 1/4 inch. Garments often use 5/8 inch. Curtains and home decor may use 1 inch for hems.
What is a directional print?
Directional fabric has a pattern that only looks correct one way, such as text, animals, or flowers with stems. Pieces cannot be rotated, so you usually need more yardage.
Does the calculator include pre-wash shrinkage?
Use the safety margin field to add 5-20% for shrinkage. Cotton can shrink 2-5% after the first wash.
How are yards converted from inches?
One yard equals 36 inches. The report shows total length in inches, yards, and meters so you can buy fabric in either unit system.