Selecting the right option for window blinds or shades can differentiate an average-looking room from a well-decorated one. Unfortunately, the most beautiful treatment will not work if you do not measure your windows properly. Blinds that do not fit because of measurement errors will mean wasted money, time, and a heck of a lot of aggravating reorder timelines.

This guide on How to Measure for Window Shades and Blinds will take you through the whole process-step by step, whether you prefer a clean inside mount or a flashy outside mount. We will also take a look at common pitfalls to avoid, helpful things to remember, and answer some FAQs. After reading through this guide, you’ll have the confidence to successfully measure for custom window treatments!!

Why Accurate Measurement for Window Shades and Blinds Matters

Having your windows measured correctly is the key to proper fitting of blinds or shades. A small margin of error in measurement can produce blinds that will not close properly or have gaps through which light leaks.

Here are some things to keep in mind:

• Custom blinds or shades are made to the exact size you provide, so accurate measurements are important.
• Incorrect measurements can be costly, and it will delay.
• The correct fit optimizes function, light control, and appearance in your room.

Tools You’ll Need

Have these available before you begin:

• Steel tape measure (avoid cloth tapes for accuracy)
• Pen or pencil
• Notebook or measurement form
• Step stool or ladder (for upper windows)

Inside Mount vs. Outside Mount: Choosing the Right Fit

Before you measure, decide if you want an inside mount or an outside mount, since the measurements will be different for each. Here’s how to decide:

Inside Mount

Inside mount blinds fit closely within the window frame, providing a minimalist, clean look.

Advantages:

• Saves space by lying flush against the frame
• Highlights architectural features
• Gives a neater, sleeker appearance

Disadvantages:

• Requires accurate measurements and square windows
• Less light-blocking capability than outside mounts

Outside Mount

Outside mount blinds are installed on the molding or wall and completely surround the window. This is the best option for maximizing light blockage.

Advantages:

• Blocks more light by extending beyond the window frame
• It hides imperfections like uneven window edges
• Provides flexibility in covering different sizes of windows

Disadvantages:

• Needs more wall space
• It is not as sleek

Step-by-Step Guide to Measuring

A. Measuring for Inside Mount Window Shades and Blinds

1. Measure Window Width 

• Take measurements at three points—top, middle, and bottom. 

• Record the narrowest width for the best fit. 

2. Measure Window Height 

• Measure from the top of the window opening to the windowsill at three points—left, center, and right. 
• Record the longest height. 

3. Double-Check

• Write down your measurements clearly and double-check each one to ensure accuracy. Round to the nearest 1/8 inch.

B. Taking Measurement for Outside Mount Blinds

1. Measure Width for Complete Coverage

• Take the measurement for how wide you want the blinds to come. Add 2–3 inches along both sides (left and right) for maximum light control and privacy.

2. Measure Height

• Take the measurement from the top of where you want your blinds to start (e.g., over molding or frame) to your desired length.

3. Measure for Overlap

• Add extra width or height if you want to block more light or need larger coverage.

Common Mistakes to Avoid

1. Measurement Only Once

• Always take measurement multiple times to avoid costly mistakes.

2. Dont Consider Obstructions

• Remember to include obstacles like locks, handles, or trims that could block your blinds.

3. Dont Consider Uneven Windows

• All windows are not square. Be sure to measure in three locations and take the narrowest width or longest height so that it will fit tightly.

Conclusion

Exact measurements are the key to starting a well-dressed, functioning, and chic room with custom window shades or blinds. Make sure to measure precisely, check your sizes twice, and factor in your preferred mounting method.

If you’re unsure about any step or want expert advice, visit Design2View for a variety of high-quality window treatment options and personalised assistance. With our support, you’ll get a perfect fit every time.

Begin measuring today, and turn your windows into exquisite focal points with personalized blinds and shades from Design2View!

FAQs On Measuring For Window Blinds

What do I do if my window is not square?

For inside mounts, use your narrowest width as a base and your longest height as a base. This will ensure that the blinds will fit tightly.

How much overlap should I provide for outside mount blinds?

Leave at least 2–3 inches on either side of the window frame for adequate light blocking and privacy.

Do I round up or down when buying blinds?

Round down to the nearest 1/8 inch for interior mounts so that the fit is not too tight. Round up slightly for exterior mounts for extra coverage.