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Curtain Length Calculator

Curtain planning tool

Choose where your curtains should fall.

Turn a floor or sill reference measurement into a hanging drop, full finished length, and cut length. Measure the reference drop from the actual hanging point, such as the ring eye or track glider. The full finished length runs from the curtain's top edge to its hem.

03

Choose where the curtain ends

Measure vertically with the rod or track already installed.

Measurement unit
in

Measure from the track glider, ring eye, or other true hanging point—not automatically from the top of the pole.

in

Use a negative value for clearance above the floor or sill, or a positive value for a break, puddle, or below-sill finish. The style supplies an editable default.

in

Measure from the ring eye, hook, or glider to the curtain's top edge. Enter 0 when the stated curtain length begins at the hanging point.

Making allowancesFor sewn curtains and cut length
in

Enter the total extra fabric consumed by the heading construction.

in

Enter the total fabric consumed by the hem construction. A double 4-inch hem needs an 8-inch allowance.

Style adjustments are editable planning defaults: ½ inch above a sill or floor, 1 inch for a soft break, and 6 inches for a puddle or below-sill finish. Full finished length includes any curtain top above the hanging point. Heading and hem allowances mean the total extra fabric consumed by construction.