Ruffle Calculator — Fabric for Ruffles
Calculate fabric requirements for ruffles and gathered trims.
Length after gathering
Finished depth (excl. seam allowance)
How We Calculate This
Ruffles require strips of fabric cut and gathered. The total strip length depends on the fullness ratio.
The formula
Total strip length = Finished length × Fullness ratio
Strips from fabric = ceil(Strip length ÷ Fabric width)
Fabric metres = Strips × (Ruffle depth + 3cm SA) ÷ 100
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates. Always verify quantities before cutting or purchasing fabric.