The Ultimate Guide to Choosing the Right Size Blackout Curtains for Your Home
Hi there! I'm James, the owner of Dolcewe.com. We've been making custom curtains for over 10 years. Today, I want to help you find the perfect size blackout curtains for your home.
Picking the right size curtains can be tricky. But don't worry! I'll make it easy for you. Our prices start at just $26.99, and we offer custom sizes to fit any window.
Key Takeaways
Main Section | Key Takeaway |
---|---|
Standard Blackout Curtain Sizes | Choose curtains at least 20 inches wider than your window width to prevent light leakage. Standard width panels (42-58 inches) and lengths (63-108 inches) work for most homes, but measure your specific space first. |
How to Measure Windows | Add 20 inches to your window width for complete light blocking. Dolcewe curtains include 1.5x fullness automatically, so you don't need to do complex calculations. |
Curtain Length Options | Choose sill length for functional spaces like kitchens, apron length for a classic look, or floor length for elegance and maximum darkness. Measure to 1/2 inch above the floor for clean floor-length or add 1-3 inches for a luxury puddle effect. |
Room-Specific Sizing | Bedrooms need curtains extending at least 3 inches past each window side for better sleep. Living rooms benefit from multiple panels on large windows, while nurseries require extra width for complete darkness during nap times. |
Custom Sizing Benefits | Order custom sizes for unusual windows (bay, arched, extra-wide) starting at just $26.99. Dolcewe handles all calculations, delivering perfectly-sized blackout curtains with proper fullness built in. |
Solving Common Problems | Mount curtain rods 4-6 inches above windows and extend 3-5 inches past each side to prevent light leaks. When in doubt, choose curtains that are too long rather than too short - you can always hem them. |
Expert Installation Tips | Install rods higher and wider than your window frame to create the illusion of larger windows and ensure complete light blockage. Use multiple panels for wide windows and select darker colors for maximum light-blocking effectiveness. |
Standard Blackout Curtain Sizes

Most stores sell blackout curtains in set sizes. Here are the most common ones you'll find:
Width Options | Length Options |
---|---|
42 inches | 63 inches |
52 inches | 72 inches |
54 inches | 84 inches |
56 inches | 95 inches |
58 inches | 108 inches |
For small windows, 42-inch width panels work well. Medium windows need 52-54 inch panels. Large windows might need multiple panels.
Small windows
1. Recommended sizes for small windows:
- Width: 36 inches to 48 inches
- Length: 54 inches to 63 inches
2. Benefits of using appropriate sizes for small windows:
- Proper coverage without overwhelming the window
- Enhanced light blockage for a cozy atmosphere
Standard-sized windows
1. Common dimensions for standard-sized windows:
- Width: 52 inches to 58 inches
- Length: 63 inches to 84 inches
2. Advantages of using standard-sized curtains for standard windows:
- Easily accessible and available in a wide range of styles
- Cost-effective option
Large windows
1. Suggested sizes for large windows:
- Width: 72 inches to 96 inches
- Length: 84 inches to 108 inches
2. Benefits of using correctly sized curtains for large windows:
- Full coverage for maximum light blockage
- Enhanced privacy and insulation
Did you know? Many people buy curtains that are too small. This lets light leak in from the sides and top.
These standard sizes don't fit all windows perfectly. That's why we offer custom sizes at Dolcewe.com! Let me show you how to get the right size.
How to Measure Your Windows for Perfect Blackout Curtains
Getting the right measurements is the first step to dark, cozy rooms. You need just a tape measure and paper to write down numbers. Or just use our curtain size calculator to find your blackout drapes sizes.
Measuring Window Width the Right Way
For total blackout effect, follow these steps:
- Measure the width of your window frame.
- Add 10 inches to each side of your window for better coverage.
This extra space helps the curtains block light from the sides. For example, if your window is 36 inches wide, you need curtains that cover at least 56 inches.
At Dolcewe, we make things easy. Our curtains come with 1.5x fullness built-in. This means the fabric is already 50% wider than the width you order. You can also choose 2x fullness for a more luxurious look.
Getting the Perfect Curtain Length
The right length depends on your curtain header type and personal style.
For rod pocket curtains:
- Measure from the top of the rod to where you want the curtain to end.
For grommet curtains:
- Measure from the top of the rod to your end point.
For pinch pleat or hook curtains:
- Measure from the curtain rings to your end point.
Choosing Where Your Curtains Should End

There are three main curtain lengths people like:
1. Sill Length
Curtains end just at the window sill. This works well in kitchens or where radiators sit under windows.
2. Apron Length
Curtains end about 4 inches below the window sill. This is a clean, classic look.
3. Floor Length
Curtains go all the way to the floor. This makes your room look taller and more elegant.
For true floor length, measure to 1/2 inch above the floor. For a puddle effect, add 1-3 extra inches.
At Dolcewe, our curtains are made to measure to fit your unique windows.
Blackout Curtain Sizes for Different Room Types
Each room has its own needs. These tips will help you choose the right size.
Bedroom Blackout Curtains

For bedrooms, I suggest floor length curtains. A length of 84-95 inches works well with standard 8-foot ceilings.
The key for bedrooms is width. Make sure your curtains extend at least 5 inches past each side of the window frame. This stops light from coming in when you want to sleep.
Living Room Curtains

Living rooms often have bigger windows. You might need panels that are 54-58 inches wide each. For a large window, use multiple panels.
Floor length looks best in living rooms. Curtains that are 84-95 inches long work in most homes.
Try to use a double rod tracks to hang sheer over blackout curtains for better light control.
Nursery Blackout Solutions

Babies need dark rooms for good naps. In nurseries, go wider than you think. I suggest curtains that are at least 8 inches wider than your window on each side.
For safety, keep curtains at sill or apron length if the crib is near windows.
Custom Sizing: The Dolcewe Advantage
At Dolcewe.com, we make curtains that fit your exact window size. Our prices start at just $26.99. Here's why custom might be best for you:
When Standard Sizes Just Don't Work
Do you have:
- Extra wide windows?
- Very tall ceilings?
- Odd-shaped windows?
- Bay windows?
Our custom curtains solve these problems. You tell us your size, we make it fit.
How We Make Custom Sizing Easy
- Measure your window width and height.
- Pick your curtain style and fabric.
- Choose your preferred fulllness (1.5x is standard, 2x is optional). No complicated calculation needed
- Your custom curtains arrive ready to hang.
You don't need to do any math or complex calculations. We handle that part for you.
Common Problems and Simple Solutions
Many customers face these issues when buying blackout curtains:
Light Leaking Around the Edges
Solution: Choose curtains 8 -10 inches wider than your window on each side. Mount the curtain rod 4-6 inches above the window frame.
Curtains Too Short
Solution: When in doubt, go longer. You can always hem curtains, but you can't make them longer.
Not Enough Fullness
Solution: Remember that your curtains should be 1.5 to 2 times the width of your curtain rod. Our curtains include this fullness already.
Tips From My 10 Years of Experience
After helping thousands of customers, here's what I know works:
-
Mount your curtain rod high. Place it 4-6 inches above your window. This makes your ceiling look taller.
-
Extend the rod. Your rod should extend 5 -10 inches past the window frame on each side.
-
Use enough panels. For wide windows, use multiple panels for full coverage.
-
Consider your room. Dark-colored blackout curtains work best in bedrooms and media rooms.
Conclusion: Getting It Right the First Time
Measuring for blackout curtains isn't hard. Just remember:
- Get the width right (wider is better)
- Choose the right length for your style
- Consider custom options for perfect fit
At Dolcewe.com, we've been helping customers get the perfect curtains for over 10 years. Our custom blackout curtains start at just $26.99.
Do you have questions about measuring your windows? Leave a comment below or contact us directly. We're here to help you get the perfect blackout curtains for your home.
FAQ
Here are some frequently asked questions about choosing the right size for blackout curtains:
1. What are the different sizes available for blackout curtains?
Blackout curtains come in standard sizes, such as 52 inches to 58 inches in width and 63 inches to 84 inches in length. Custom-sized curtains can be tailored to fit your specific window measurements.
2. How do I measure my windows for blackout curtains?
To measure your windows for blackout curtains, use a measuring tape to determine the width and length of the window. Add any additional space you may need for the curtains to hang properly, such as the space above the window or the desired floor length. You may check our detailed measurement guide
3. Can I use standard-sized curtains for non-standard window shapes?
Standard-sized curtains may not fit properly on non-standard window shapes. It is recommended to seek professional assistance or consider custom-made curtains for irregular-shaped windows.
4. How much do custom-sized blackout curtains cost?
The cost of custom-sized blackout curtains can vary depending on factors such as the fabric, design, and additional customization options. Custom-sized curtains are generally more expensive compared to standard-sized curtains.
5. Are blackout curtains suitable for all room types?
Yes, blackout curtains are suitable for various room types, including bedrooms, living rooms, and home theaters. The recommended sizes may vary depending on the specific requirements of each room.