Studio Matrx Monthly · Volume 1 · Issue 1 · June 2026
Amogh N P
 In loving memory of Amogh N P — Architect · Designer · Visionary 
Curtain Calculator

Curtain Fullness Calculator

Pick a heading and fullness, enter your track width and fabric roll width — get the flat fabric width and the number of widths you need to join, plus an estimate of total metres. The single-purpose companion to the cost calculator.

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At 2× fullness, a 1.52m track wants 3.05 m of flat cloth — 3 widths of 1.4m fabric joined together. Common roll widths are 54" (≈1.37m) and wide-width 2.8–3m railroaded fabric.

Flat fabric width

0.00 m

0 fabric widths · 8.52 m total

Widths needed

3

of 1.4m cloth

Fabric metres

8.52 m

incl. 0.4m hem / drop

Fullness

Pencil

Per panel

2 widths

each of two panels

Flat fabric is 2× the window — that gathered surplus is what makes the folds.

Read before you buy: this gives the bare cloth width and widths to join. Add extra for the pattern repeat (large repeats can need a full extra width), and confirm hem and heading allowances with your tailor (0.3–0.5m per drop is typical). Fabric roll widths vary — 54" is common in India, but wide-width / railroaded goods change the width count entirely. When in doubt, round up.

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