Curtains & Windows

Curtain Fabric Calculator

Estimate fabric length for paired curtains using fullness, usable fabric width, drops, hems, and repeat.

Free interactive tool

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Method & guidance

How the Curtain Fabric Calculator works

Finished curtain width determines total fabric widths; each cut drop includes hem and pattern allowance.

How to use this tool

  1. Collect accurate values for track or rod width, finished curtain length, fabric width.
  2. Enter measurements in the displayed units and select the choices that match this project.
  3. Select Calculate / Generate, then compare the outputs with the stated Curtain Fabric Calculator method.
  4. Apply the result only after checking product specifications and real site conditions.

Example calculation or use case

For a worked Curtain Fabric Calculator example, use Track or rod width = 2.2 m, Finished curtain length = 2.4 m, Fabric width = 1.4 m, Fullness multiplier = 2. The tool then applies this method: Finished curtain width determines total fabric widths; each cut drop includes hem and pattern allowance.

Frequently Asked Questions

What information does the Curtain Fabric Calculator use?

It uses the measurements and choices shown in the form. Finished curtain width determines total fabric widths; each cut drop includes hem and pattern allowance.

How accurate is the Curtain Fabric Calculator result?

The calculation is mathematically consistent with the stated assumptions. Pattern matching can consume more fabric than a plain cloth; verify the exact repeat. Real products, site conditions, and supplier specifications can still change the final decision.

Should I include an allowance?

Use the result as a planning baseline and keep a sensible reserve for site variation, delivery, or fitting.

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