Rod width, panel width and panel length from your window measurements. Enter your figures below.
How the calculator works
The calculator follows the usual measuring logic for a pair of curtain panels.
- Rod width is the window width plus the extension on each side. Extending the rod past the frame lets the panels stack against the wall, off the glass.
- Total curtain width is the rod width multiplied by the fullness. At 2x fullness, the flat fabric is twice as wide as the rod, which gives the panels their folds when closed.
- Width per panel is half of that total, for a pair that meets in the middle.
- Panel length is the height from the rod to the floor, adjusted for where you want the hem to land.
Before you order
Heading styles hang differently. Panels on rings start below the rod, while grommet and rod-pocket panels sit partly above it. Measure from the point where the top of the fabric will actually hang, and compare the result with the measuring guide of the brand you are ordering from. Custom panels are usually not returnable.