When learning how to measure for curtain rods, use these curtain rod placement guidelines:

- Extend the rod at least 6 inches beyond each side of the window frame, where space allows, leaving additional room for fuller panels.

- Mount it 4–6 inches above the frame, or 1- 2 inches below the crown molding for more height.

- Position end brackets to accommodate the selected rod extension and panel arrangement.

- Use the provided center bracket for support for rods longer than 60 inches.

Before comparing curtain rod sizes, gather a few basic tools:

- Steel tape measure
- Pencil
- Level
- Stud finder if you will be mounting into drywall

Avoid a fabric tape measure, which can stretch and give inaccurate readings.

Start by measuring the window frame width. Then measure from the top of the frame to the ceiling to see how much mounting space you have.

The right curtain rod length depends on your window width, panel fullness, and available wall space. Begin by measuring the window from the outside edges of the trim, then determine how far the rod should extend on each side.

To maximize natural light, allow enough room beside the window for the panels to sit clear of the glass. Extend the rod at least 6 inches beyond each side of the window trim, where space allows. Fuller double- or triple-width panels may need 9–12 inches per side. 

For decorative stationary panels, choose single, double, or triple fabric widths according to the window’s scale and your desired fullness. Wider windows may call for additional fabric widths to create a balanced composition. Use these measurements as starting points, adjusting them to suit your window and finished treatment.

Note: Rod length refers to the rod alone. Finials and end caps add to the overall width, so account for their dimensions when checking the available wall space.

Next, decide how high to hang the curtain rod above the window. For a classic look, mount the curtain rod 4–6 inches above the top of the window frame. If you want the room to seem taller, place it 1 to 2 inches below the crown molding

Keep in mind that higher curtain rod placement changes the panel length you need. Decide how high to hang the rod before ordering curtains. Make sure the panels still reach the floor or sill at the right length.

Position the end brackets to accommodate your selected rod extension and panel arrangement, allowing enough room for the fabric to sit clear of the glass. When determining placement, consider panel fullness, whether the curtains are stationary or operable, and the available wall space.

Install end brackets approximately 4–6 inches inward from each end of the rod, adjusting placement to accommodate the rod extension, panel fullness, and curtain movement. For rods over 60 inches, use the supplied center support bracket. If additional center brackets are supplied, space them evenly and position a support at each rod joint.

Heavy or lined curtains may need extra support even on shorter rods. Before drilling, use a stud finder. A bracket secured to a stud can hold more weight than one mounted with drywall anchors alone.

Knowing how to measure for curtain rods is key, especially when using solid brass hardware. Solid brass rods are heavier than aluminum or most plated options. Bracket spacing and stud placement need to be accurate from the start.

Get those measurements right once, and the rod can stay securely mounted for years. For installation guidance on brass hardware, see Modern Matter’s installation instructions.

These final checks ensure you choose the right rod size and placement:

- Measure the window frame width and the space above it before shopping.
- Allow at least 6 inches of rod extension per side, where space allows, with additional room for fuller panels.
- Plan for center support for rods longer than 60 inches.

Once you set your measurements, explore Modern Matter’s solid brass drapery hardware.