How wide should my curtain rod be?
Choose how far the rod should extend past each side of your window. Nenxo calculates the full span and checks it against the clear wall space you actually have on the left and right.
Why rod width is different from window width
An outside-mounted curtain rod normally extends beyond the window opening. The calculator does not assume a fixed amount; it uses the extension you enter on each side and keeps that choice visible.
Check both sides independently
A corner on one side and open wall on the other can make a symmetrical extension impossible. Nenxo therefore compares the chosen extension with the left and right clear-wall measurements separately instead of assuming the room is centred.
What “rod length” does not include
The result is the planned rod or pole span. Decorative finials, end caps, manufacturer-specific bracket offsets and required centre supports vary by product. Check the exact hardware dimensions and instructions before ordering or drilling.
Next: turn rod width into curtains
Once you know the span, use the panel calculator to convert it into whole panels and packs, or open the full calculator to add curtain length and product comparison.