How to Measure for Window Shades and Blinds: A Simple Step-by-Step Guide

Measuring your windows the right way is the first and most important step in getting the perfect fit for your new shades or blinds. Whether you’re upgrading an old window treatment or starting fresh, knowing how to measure for window shades and blinds helps you avoid gaps, crooked installs, and wasted money. In this guide, you’ll learn everything in easy steps, so you can feel confident whether you’re ordering inside mount cellular shades or outside mount faux wood blinds. Let’s get started with the basics.

Why Proper Window Measurements Matter

Window treatments do more than just block the sun. They add style, improve privacy, and even help save energy. But if your shades or blinds don’t fit right, they won’t do any of those things well. A good fit means:

1. No light leaks on the sides

2. Smooth operation when opening and closing

3. Neat, clean look with no gaps

4. Less chance of having to return your order

By learning how to measure correctly, you avoid mistakes and get the best results the first time. That’s why this guide is important for anyone buying new blinds or shades.

Types of Window Coverings: Blinds vs. Shades

Before we measure, it’s helpful to know the difference between blinds and shades:

1. Blinds have slats you can tilt open or closed. They come in wood, faux wood, aluminum, and vinyl.

2. Shades are made from fabric and roll or fold up. Popular types include roller, cellular, roman, and pleated shades.

Each style covers the window in a different way, which can change how you measure. But don’t worry, we’ll show you how to do both.

How to Measure for Window Shades and Blinds Correctly

The most important step in this whole process is knowing how to measure for window shades and blinds based on where you want them to go inside or outside the window frame.

Grab a steel tape measure (not a cloth one), a pencil, and a notepad. Always measure to the nearest 1/8 inch. Don’t round up or down.

For each window:

• Measure width in three places: top, middle, and bottom

• Measure height in three places: left, center, and right

• Always write down the smallest width and the tallest height

Write your results clearly and label which window they’re for. You’ll need this when you order your custom window coverings from Metro Shutters, Shades, and Blinds.

If you'd like to learn how to use a measuring tape properly, check out this step-by-step guide from a trusted source

How to Measure a Window for Blinds (Step-by-Step)

Measuring for blinds is simple if you follow these steps:

Decide the mount type (inside or outside)

1. For inside mount:

   • Measure the width inside the frame at the top, middle, and bottom

   • Measure height from the top of the frame to the sill at left, middle, and right

   • Use the smallest width and largest height

   For outside mount:

   • Measure the width of the area you want to cover (usually 2–3 inches wider than the window frame)

   • Measure height from the top where you’ll mount to the spot you want to cover

   Record all measurements clearly

This method works for wood, faux wood, aluminum, and vertical blinds..

How to Measure Blinds for Windows with Confidence

If you’re feeling nervous, that’s normal. But here are some pro tips to make it easier:

• Always use a steel tape measure, never a ruler or cloth tape

• Measure to the nearest 1/8 inch

• Write down width first, then height (W x H)

• Label every window with a room name

• If the windows look similar, double-check each one anyway

With these tips, measuring blinds for windows becomes simple and stress-free.

How to Measure for a Window Shade (Simple Method)

For shades, the process is almost the same, but there are a few things to remember:

1. Fabric shades may not always cover the full width of the mount (some have light gaps)

2. Roller and cellular shades need careful measurements for the best fit

Here’s how to measure:

1. For inside mount shades, follow the same inside width and height steps as with blinds

2. For outside mount shades, add extra width (2–3 inches) to block light fully

Learning how to measure for a window shade makes sure your shade looks and works the way it should.

How Do You Measure for Window Shades Like a Pro?

If you want clean results like a professional installer, here’s what they do:

1. Check the window frame depth, some shades need 1.5 inches of depth

2. Use a laser level if available to keep brackets straight

3. Double-check that windows are square (if not, the inside mount may not fit well)

4. Take extra time for large or high windows

So if you’ve ever asked, How do you measure for window shades, now you’ve got the answer. It’s all about careful steps and smart tools.

Inside Mount vs. Outside Mount: What’s the Difference?

Let’s break it down:

• Inside Mount: 

  Blinds or shades fit within the window frame. Looks sleek and built-in. Best for deep frames and modern designs.

• Outside Mount: 

  Blinds or shades cover the entire window frame and a bit more. Good for shallow frames or more light control.

Inside mounts need very accurate measurements. Outside mounts give more flexibility.

Deciding between the two will help you move forward with how to measure for window blinds, outside mount, or inside.

How to Measure for Inside Mount Window Blinds

This one is all about precision. Follow these steps:

1. Measure inside width at top, middle, and bottom. Use the smallest.

2. Measure inside height at left, middle, and right. Use tallest.

3. Measure the depth of the window frame make sure it meets the minimum for your product

4. Write all numbers down in (W x H) format

This is the best method for a clean, custom-fitted look. Now you know how to measure for inside mount window blinds properly.

How to Measure for Window Blinds Outside Mount (Tulsa, Oklahoma Guide)

In Tulsa, Oklahoma, many homes have shallow or uneven window frames. For these, an outside mount can be a better choice. Here’s how to do it:

1. Measure the exact width you want the blinds to cover (add 2–3 inches beyond the window on each side)

2. Measure the height from the top mount point to where you want the blinds to stop

3. If covering trim or molding, measure beyond the frame

4. Make sure the wall space around the window is clear for hardware

Outside mounts are also great for reducing light gaps and making windows appear larger.

Final Measuring Tips from Metro Shutters, Shades, and Blinds

Now that you know how to measure for window treatments, here are a few last tips from the team at Metro Shutters, Shades, and Blinds:

1. Always measure twice before you order

2. If unsure, start with one window before measuring the whole house

3. Don’t guess, use a notepad or phone to record sizes

4. Keep your notes organized by room

5. Ask for help if your windows are extra wide, high, or oddly shaped

   
   

Measuring might seem tricky at first, but once you do one or two windows, the rest will feel much easier.

Need help getting the perfect fit? Contact Metro Shutters Shades and Blinds for expert measuring support and custom-fit solutions that match your space. We’re here to make it easy and get it right the first time.

Conclusion

Getting accurate measurements for your shades or blinds doesn’t have to be hard. With just a few tools and some patience, you can learn exactly how to measure for window shades and blinds like a pro. Whether you choose an inside or outside mount, the steps are simple when you follow the right process. Just remember to measure in multiple spots, write everything down, and always double-check before ordering.

The right measurements mean better-looking windows, smoother installation, and a more comfortable home. If you need extra help or want expert advice, the team at Metro Shutters Shades and Blinds is always here to support you from start to finish.