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Both calculators run independently β€” change the inputs on either side to compare results.

Sewing

Fabric Gathering Ratio Calculator

Calculate the pre-gathered fabric length needed to achieve the right fullness for ruffles, skirt hems, and sleeves. Accounts for gathering ratio, fabric drape, and hem allowances.

Fill in the required fields to see your result.
Sewing

Fabric Gathering Calculator

Compute the flat cut length of fabric needed to gather down to a target finished length, using a chosen gather ratio. Useful for ruffles, gathered skirts, curtain headers, and shirring projects.

Fill in the required fields to see your result.

Key differences

Fabric Gathering Ratio CalculatorFabric Gathering Calculator
CategorySewingSewing
Inputs required42
ResultFabric Length to Cut (inches)Fabric Length Needed (inches)
What it doesCalculate the pre-gathered fabric length needed to achieve the right fullness for ruffles, skirt hems, and sleeves. Accounts for gathering ratio, fabric drape, and hem allowances.Compute the flat cut length of fabric needed to gather down to a target finished length, using a chosen gather ratio. Useful for ruffles, gathered skirts, curtain headers, and shirring projects.