Choosing the right curtains can transform any room, but getting the measurements right is crucial. Our curtain size calculator takes the guesswork out of the process, ensuring you get the perfect fit every time. Whether you’re dressing a small bedroom window or floor-to-ceiling living room panels, we’ve got you covered.
Note: For the most accurate results and personalized recommendations, consult with a professional interior designer or curtain specialist.
It’s that simple! Let’s dive deeper into each step to ensure you get the most accurate results.
Before we start calculating, it’s important to understand the key measurements:
Use a metal tape measure for accuracy. Measure the width of your window from one side of the frame to the other. If you’re using an inside mount, measure inside the window frame. For outside mounts, measure from the outer edges of the trim.
Curtain fullness refers to how gathered or pleated your curtains will look when closed. Here are common fullness ratios:
To calculate curtain width, multiply your window width by your chosen fullness factor.
Decide where you want your curtains to fall:
Measure from the rod to your desired endpoint.
Your curtain rod should extend 3-6 inches beyond each side of the window frame. This allows curtains to be pulled back without blocking light.
Now that you have your measurements, enter them into our calculator:
Different curtain styles may require slight adjustments to your measurements:
Now that you’re armed with the knowledge to perfectly size your curtains, it’s time to put it into practice. Use our curtain size calculator to get precise measurements for your window treatments. Whether you’re redecorating a single room or outfitting your entire home, you’ll have the confidence to choose curtains that fit beautifully and enhance your space.
Take the first step towards stunning window treatments – try our curtain size calculator now and see the difference perfect measurements can make!
Treat each section of a bay window as a separate window. Measure each section individually and use separate rods for a custom fit.
Measure each window separately. For a cohesive look, you may want to use the largest size for all windows in the same room.
It's a matter of personal preference. Floor-length curtains are popular for a polished look, but you can also choose shorter lengths for functional spaces like kitchens.
Add 6-12 inches to your window width to allow for overlap when curtains are open.
Sheer curtains often require more fullness. Consider using a 3x fullness factor for a luxurious, gathered look.