Pencil Pleat Calculator — Tape & Fabric
Calculate fabric and tape for pencil pleat curtain headings.
Full track or pole length
Track to hem position
0 for plain fabric
15cm for double 7.5cm hem
How We Calculate This
Pencil pleat curtains use heading tape that draws up into even, closely packed folds. Fabric quantity depends on fullness ratio and the heading tape width determines the heading allowance.
The formula
Total width = Track width × Fullness ratio
Fabric widths = ceil(Total width ÷ Fabric width)
Heading allowance = Tape width + 3cm
Cut drop = Drop + Hem + Heading allowance
Tape = Fabric widths × Fabric width + 10cm
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates. Always verify quantities before cutting or purchasing fabric.