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.
Inputs
Results
Cut Fabric Length
49.25 in
How to Use This Calculator
- Enter the finished gathered length (inches) that the fabric must gather down to.
- Set the fullness ratio (1.5:1 = light gathering, 2:1 = moderate, 3:1 = full ruffle).
- Enter seam allowances (inches) for the gathering and attachment seams.
- Review total fabric length to cut before gathering, total yards, and gathering excess.
- Check that your machine can gather the selected fabric weight -- heavy fabric requires stronger gathering.
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