How to Measure for Short Bathroom Window Curtains? | Get the Perfect Fit

For a perfect fit, measure from your rod position down to the windowsill or desired apron length, and make sure the total curtain width is about twice the window width for proper fullness.

Getting the right short bathroom window curtain is about knowing the exact width and length you need before shopping. This guide breaks down the foolproof method for measuring your window so you get a perfect fit the first time.

What You Need Before You Measure

You need a metal tape measure, a step stool, a pencil, and a notepad. Decide where you want your curtain rod to sit and how you want the curtains to end; you will measure from these two points.

• Rod Location: Mount the rod 4 to 6 inches above the window frame to make a small bathroom window look taller. Extend the rod 3 to 10 inches past the window trim on each side to let in maximum light when curtains are open.
• Curtain Length: For short bathroom curtains, choose between sill length (ending just above the sill) or apron length (ending about an inch below the sill).

How to Measure for Short Bathroom Curtains: Step by Step

With your hardware location decided, follow these steps to get your final measurements.

1. Measure the Window Width: Get the total width from the outside edge of the left trim to the outside edge of the right trim. Write this as “A.”
2. Add Rod Extension for the Curtain Width: To “A,” add the total rod extension. For example, if adding 6 inches on each side (12 inches total), this is “B,” your rod length. Per Home Depot, a common approach is choosing a rod 8 to 10 inches longer on each side than the window, adding 16 to 20 inches to the width.
3. Determine Curtain Width for Fullness: Multiply “B” by 2. So if your rod length is 40 inches, you need a combined curtain width of 80 inches for a standard gathered look.
4. Measure the Curtain Length: Measure from the top of the rod or curtain rings down to your desired endpoint (windowsill or about an inch below it). This is your curtain length. If using a track, measure from the top of the track. Do not measure from the window frame itself.

Common Mistakes to Avoid

• Forgetting the Rod Extension: Measuring only the glass or trim and not the rod extension is the number one mistake. Measure for the rod, not just the window.
• Ignoring Fullness: A panel that barely covers the window width looks flat and provides no privacy. Aim for the 2x multiplier.
• Measuring from the Wrong Point: For a pole, your length measurement starts from the top of the pole or rings, not from the top of the window frame.
• Forgetting Bathroom Hazards: Keep your curtain length above sinks, toilets, or towel bars. If a radiator sits beneath the window, stop the curtain short of it to let heat escape.

How to Choose Short Bathroom Curtains

Now that you have your exact measurements (e.g., width 80 inches, length 24 inches), you can search for “short bathroom window curtains” that meet those numbers. If you’re ready to see our top picks for style, durability, and privacy, check out our curated list of the best short bathroom window curtains we recommend for U.S. homes. This roundup helps you find the right product based on your new measurements.

The most important details for a professional look are getting the width right for fullness and the length right for your space. Take your time, measure twice, and a well-measured curtain makes the entire bathroom feel more finished.