The Ultimate Guide to Curtain Rods

While shopping for curtains, it can be easy to overlook the hardware that’s involved. However, this is one of the most important parts of your window decor. It’s just as important to choose the right curtain rod (and finials) as it is to choose the right curtain. In this guide, we’ll answer all your questions when it comes to curtain rods. From what types of curtain rods are available to choosing the right size (both length and diameter), you’ll find everything you need to know in this step-by-step guide. Shop curtain rods now >

Step 1: Figure out how much weight you need to support

When selecting a curtain rod, it’s crucial to consider how much weight it can hold. Heavier curtains (blackout curtains, thermal curtains, drapes) are heavier than many light-filtering and sheer options. If you have a set of heavy curtains, consider weighing them.

Divide the weight of your curtains by the approximate length of your curtain rod (we'll explain how to measure for this below). This will give you an idea of how much weight per foot your curtain rod will need to support. Look for information in your item details to see if the rod can support this amount of weight.

Step 2: Choose the curtain rod’s diameter

It’s important to know the diameter of your curtain rod for a couple of reasons. First, this will determine if your curtain's heading will fit onto the rod. You can learn more about curtain headings in our guide to choosing curtains. Second, this will help you select a curtain rod bracket if your curtain rod is sold separately from its hardware.

A modern brass curtain rod.

Step 3: Choose the curtain rod’s width (or length)

To determine the optimal width of your curtain rod, you'll need to measure the width of your window including the frame or trim. Take this measurement three times: once at the top, once at the center, and once near the bottom of your window. These measurements will most likely vary slightly. Use the largest of the three as your window's width.

If you don't have much space to either side of your window, look for a curtain rod that is the same width as your window. However, if space permits, we recommend that your curtain rod extend five inches past your window on either side. This ensures that, when your curtains are open, only a small portion of your window is still covered by the fabric.

Measuring curtain rods for an inside mount: If you're using a tension rod or installing another type of rod inside your window's frame or trim, measure the width of your windowpane. Start from the inner edge of the frame on one side and measure across to the inner edge of the frame on the other. Complete this measurement three times as explained above. Use the smallest measurement as your window's width. This will also serve as the width of your curtain rod.

An illustrated guide to measuring for the right curtain rod length
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