Curtain Panel Calculator

Adjust the calculator values below

Required gathered width 144 in
Finished width per panel 72 in
Cut width per panel 76 in
Fabric widths per panel 2
Total vertical drops 4
Joining seams per panel 1
Raw drop length 96 in
Pattern-adjusted drop length 96 in
Base fabric length 10.67 yd
Extra allowance 1.07 yd
Fabric to buy in yards 11.73 yd
Fabric to buy in metres 10.73 m
11.73 yd / 10.73 m
Fabric to buy Standard roll-direction estimate using equal panels and full-width vertical drops
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Curtain Panel Calculator

Use this curtain panel with curtain coverage width, curtain fullness, and custom fullness ratio to get fast results, understand the formula behind the...

How curtain width and fullness work

The coverage width is multiplied by the selected fullness ratio to find the total finished curtain width. That width is divided equally among the panels, and two side allowances are added to each panel's cut width. The calculator then rounds up the number of usable fabric widths required for every panel so matching panels receive the same number of joined drops.

How fabric length is estimated

A raw vertical drop is the finished curtain length plus the header and bottom allowances. When a vertical pattern repeat is entered, each drop is rounded up to a whole repeat before it is multiplied by the total number of drops. The final extra-fabric percentage is added after that pattern adjustment, and the purchase amount is shown in both yards and metres.

Check construction and pattern details before cutting

This is a standard roll-direction estimate for equal panels made from full-width vertical drops. It does not optimize railroaded fabric, half-width joins, horizontal pattern placement, centered motifs, paired mirror images, lining, interlining, tiebacks, returns, overlaps, heading-specific take-up, or supplier cut increments. Confirm the heading system, fabric orientation, shrinkage, usable width, repeat, matching plan, and cutting layout before ordering or cutting.

Frequently asked questions

Common questions about curtain panel, useful assumptions, result interpretation, and mistakes to avoid.

What does curtain panel mean?

Curtain Panel describes a specific relationship between the values you enter, especially Curtain coverage width and Curtain fullness. The result is useful when those values describe the same real-world case.

When is curtain panel useful?

Curtain Panel is useful when you need a quick estimate before comparing options, checking a document, planning a task, or explaining a number to someone else.

Which assumptions matter most for curtain panel?

The most important assumptions are the ones behind Curtain coverage width, Curtain fullness, units, timing, and scope. If those assumptions are wrong, required gathered width can look precise but still be misleading.

How should I interpret curtain panel?

Read required gathered width with the inputs beside it. A high or low answer only makes sense after you know the unit, time period, comparison point, and any limits of the calculation.

Why might curtain panel look different somewhere else?

Another tool may use different rounding, units, default assumptions, formulas, or boundaries. Compare the inputs before assuming either answer is wrong.

What mistake should I avoid with curtain panel?

Avoid mixing values from different people, projects, dates, unit systems, or scenarios. The calculation works best when every input belongs to the same case.

What should I compare with curtain panel?

Age Calculator can help with a nearby question when you want a second view of the same decision, measurement, or planning problem.