How to Measure for Blinds and Achieve a Perfect Fit for Your Windows


Windows are often overlooked features in our homes. However, they offer the perfect opportunity to transform the look and feel of a space. If you’re getting ready to give your space a facelift, don’t underestimate the power of well-fitted blinds!


When it comes to choosing and installing blinds, Accurate measurements are crucial! Ill-fitting blinds can not only look unappealing, but they can also affect the functionality of the blinds, compromising privacy and light control.


In this post, we will guide you through the essential steps of how to measure for blinds to ensure a perfect fit. From understanding the types of blinds available to choosing the right materials and tackling the installation process, we’ve got you covered.

woman learning how to measure for blinds

Measure Twice, Install Once

When it comes to blinds, precision is key! “Measure Twice, Install Once” is not just a saying; it’s a golden rule for achieving the perfect fit and incorrect measurements can spell disaster for your window treatment goals!

  • Incomplete Coverage: Blinds that are measured incorrectly might not snugly fit within the window frame, leaving unsightly gaps. These gaps not only compromise your desired aesthetic but also permit unwanted light to infiltrate, disrupting your space’s ambiance.
  • Privacy Concerns: Imagine blinds that fall short of covering the entire window. This oversight can compromise your privacy, allowing prying eyes a peek into your personal space. Accurate measurements are the first line of defence against unintentional exposure.
  • Installation Difficulties: Inaccurate measurements can transform the seemingly simple task of installing blinds into a challenging ordeal. Difficulties may arise, leading to uneven blinds or misaligned installations that detract from the overall visual appeal.


Tools Needed For Measuring

Before starting the measurement process, it is important to gather the necessary tools. The following items are essential for accurate blind measurements:

  • Tape measure: A reliable tape measure is essential for measuring the width and height of the window accurately. Make sure to use a tape measure that is flexible yet sturdy for precise measurements.
  • Step ladder: If your windows are located at a height that is not easily accessible, a step ladder will be necessary to reach them safely and take accurate measurements.
  • Pen and paper: Keep a pen and paper handy to jot down the measurements as you go. This will help you keep track of the dimensions and avoid any confusion during the purchasing and installation process.
Woman measuring window with tape measure

Understanding Blinds Sizes & Choosing The Right One For Your Windows

Blinds come in various sizes to accommodate different window dimensions. Understanding the standard sizing options and how to choose the right blinds for your windows is essential for achieving a perfect fit.

Blinds are typically categorised into two sizes: stock and custom. Stock blinds are pre-made and come in standard sizes that fit most windows. Custom blinds, on the other hand, are made to order and can be tailored to fit windows of any size or shape.

  • Stock blinds: It is important to measure the window accurately and select the closest size available. If the window falls between two standard sizes, it is generally recommended to choose the larger size and have the blinds trimmed down to fit during installation.
  • Custom blinds: Here Precise measurements are even more crucial. Take accurate measurements of the width and height of the window, as well as the depth of the window frame. Provide these measurements to the blind manufacturer or retailer to ensure that the blinds are customized to fit your specific window dimensions.


Installation Considerations: Above or Inside?

However, another important consideration to take into account is how you wish to install your blinds – above the window or inside the window frame.

  • Above the Window: This classic approach involves mounting the blinds outside the window frame, creating an illusion of a larger window and allowing more light to enter.
  • Inside the Window Frame: This option offers a sleek, tailored appearance, fitting the blinds snugly within the frame for a clean, modern look.

Understanding both the sizes and installation preferences will guide you in choosing the perfect blinds for your windows.


Choosing Blinds For Different Rooms: Considerations & Tips

Choosing blinds isn’t always a one-size-fits-all choice. Each room in your home calls for it’s own touch and blinds to match.

  • Living Rooms: Opt for blinds that strike a balance between aesthetics and functionality. Consider light-filtering options to create a welcoming ambiance, while also ensuring privacy.
  • Bedrooms: Prioritise privacy in bedrooms with blackout or room-darkening blinds. Choose materials that enhance the room’s coziness and contribute to a restful atmosphere.
  • Kitchens & Bathrooms: Resistance to moisture and ease of cleaning are crucial in the kitchen and bathrooms. Look for blinds made from durable materials that can withstand food splatter, moisture and are easy to maintain.
  • Children’s Rooms: Prioritise safety in children’s rooms with cordless or motorised blinds. Opting for playful designs and vibrant colours can create a stimulating and cheerful environment.
man on ladder measuring window for blinds

Measuring Windows For Blinds – Step By Step Guide

To measure your windows for blinds, follow these step-by-step instructions, laying the foundation for a flawless installation.


Step 1: Inside or Outside Mount?

Determine whether you want your blinds inside the window frame for a sleek look or mounted above the frame for an illusion of larger windows.


Step 2: Gather Your Tools

Bes rue to arm yourself with the essentials: A measuring tape, level, pencil, and notepad. Digital tools can add precision for those who prefer a tech-savvy approach.


Step 3: Width Measurement

Start by measuring the width of the window. For inside mounting on recessed windows, measure the width at the top, middle, and bottom of the window. For blinds that are not recessed or will be installed above the recess, measure the width of the area you want to cover.

Take the measurement at the top, middle, and bottom of the window, as the dimensions may vary slightly. You can also add extra width for optimal light blockage.


Step 4: Height Measurement

Next, measure the height of the window. For inside mounts, measure from the top inside edge of the window frame to the bottom inside edge. For outside mounts, measure from the desired top position to the bottom sill or floor. Add extra length for extra coverage if needed.


Step 5: Depth Measurement (Inside Mount Only)

If you are planning to install blinds inside the window frame, measure the depth of the window frame as well. This will help determine if the blinds you choose will fit properly within the frame.

man measuring the top of a window

Adjusting Blinds For Irregularly Shaped Windows

Sometimes, windows may have irregular shapes that require special consideration when measuring for blinds. Here are some tips for measuring and adjusting blinds for irregularly shaped windows:

  • Arched windows: For arched windows, measure the width and height of the window at the widest points. Provide these measurements to the blind manufacturer, who can create custom blinds that fit the unique shape of the window.
  • Bay windows: When measuring for blinds in bay windows, treat each section of the window as a separate window and measure accordingly. Take measurements of the width and height of each section, as well as the depth of the window frame.
  • French doors: When measuring for blinds on French doors, measure the width and height of each individual door panel. Take into account any handles or other obstructions that may affect the installation and operation of the blinds.


Common Mistakes To Avoid When Measuring For Blinds

When measuring for blinds, it is important to avoid common mistakes that can lead to ill-fitting blinds. Avoiding these common mistakes is key to achieving a perfect fit and elevating the aesthetics of your space. Here are some mistakes to avoid:

  • Not measuring multiple times: It is essential to measure the windows accurately, and measuring multiple times can help ensure precision and consistency in the measurements.
  • Neglecting to account for obstructions: Take into consideration any obstructions such as handles, locks, or window cranks that may affect the installation and operation of the blinds. Make sure to measure around these obstructions and provide accurate information to the blind manufacturer or retailer.
  • Assuming all windows are the same size: Even in the same room, windows can vary in size. Avoid assuming that all windows are the same and measure each window individually.
  • Forgetting to measure the depth of the window frame: If you plan to install blinds inside the window frame, it is important to measure the depth of the frame. Forgetting this measurement can result in blinds that do not fit properly.
woman measuring large window

Get A Flawless Fit Today


It goes without saying that accurate measurements are essential for achieving a perfect fit when it comes to window blinds. By following our step-by-step guide and considering the specific measurement requirements for different types of blinds and rooms, you can ensure that your blinds fit perfectly!


Looking for an easy and effective way to change up a room’s look? Homemakers Lifestyle has got you covered! We offer a comprehensive selection of high-quality blinds ideal for any space. At Homemakers Lifestyle, our commitment goes beyond providing exceptional products – we deliver personalised recommendations, expert advice, and superior installation.


What’s more? We offer at-home consultation and measures so you can rest assured that our skilled installation team will ensure that your chosen products are expertly fitted! Get in touch today to learn more!