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Video: How to Measure for Blinds and Shades
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How to Measure for Blinds and Shades

Length: 6:42 Added: May-23 Views: 960946

Ordering custom window coverings from and not sure where to start? We'll show you how to measure for blinds and shades with a few easy steps.


Ordering custom window coverings from and not sure where to start? The first step is to measure your windows. We'll show you how to measure for blinds and shades with a few easy steps.


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When it comes to custom window coverings, one of the most important steps is to properly measure your windows. gives you a few options to get the job done right.

If you’re looking for a professional to complete the measuring for you, we offer a convenient and affordable service. On the other hand, if you’re more of a do-it-yourselfer, we can show you how to get the perfect measurements. It’s quick and easy -- you just have to have to follow a few simple steps. So, let’s take a quick look at how to measure your standard, rectangular windows.

Keep in mind this is a general overview, and we urge you to view the measuring guide for your specific product. You can also call 800-505-1905 to get free measuring help from one of our expert window decorators.

Before we start, here are some critical points to keep in mind:

Always use a steel measuring tape -- it’s essential to getting precise, accurate measurements. 

You’ll notice your tape measure is divided into inches, represented by the longest lines and the big, bold numbers. It’s then divided into fractions of inches - half, quarter, eighth and sixteenth. The smaller the fraction, the shorter the line will be.

You’ll measure to the nearest one-eighth of an inch, as represented by the fourth-longest lines on the tape measure. If the size falls on a one-sixteenth mark or smaller, round DOWN to the nearest one-eighth. 

**If you’re not sure what your measurement is, count the tick-marks after the last number and use this chart. 

Make sure to record your measurements as you go, clearly specifying the width vs. the height.  We suggest using our handy measuring sheet, which gives you measuring tips as well as spaces to record your measurements.

Got it? Great! Let’s get to measuring.


First you need to know whether you’re going to mount your window covering INSIDE the window opening, or OUTSIDE on the wall. 

Let’s start with inside mount, since it’s the traditional way to hang blinds and shades, and the one we recommend in most cases. For inside mount, you should always record the exact window opening size, taking no deductions from your measurements. Your window covering will be made to fit snugly in the window.


~ Step 1: Ensuring Proper Depth ~ 

Start by making sure your window has enough depth to accommodate the product you’re interested in. You can find minimum mounting depth under the "Mounting Requirements" section of any product page. 

Also check to be sure there aren’t any obstructions in the window opening that may get in the way of an inside mount. If your window isn’t deep enough or if there are any obstructions, you should consider another product, OR you’ll need an outside mount. If you’d like help selecting an alternative product that fits your depth, give us a call at 800-505-1905 and one of our window covering experts can quickly help. 

~ Step 2: Measuring Width ~ 

To get your window’s width, you’ll always measure from edge to edge, inside the window frame at the location you plan to mount your installation brackets. 

If you’re considering a roller shade, solar shade, sheer shade, or a vertical blind, measure width at the top of the window only. For all other blinds and shades, take top, middle and bottom measurements, and record the narrowest of the three as your measurement. 

One thing to note about roller shades, solar shades, and sheer shades -- if you inside mount any of these products, there will be light gaps of about one-half inch on each side of the shade, because of the product’s hardware. 

To eliminate light gaps, add light gap blockers to your order. These are adhesive strips that attach to your window and completely block any light gaps. Alternatively, you may want to consider an outside mount for these products to fully cover your window.


~ Step 3: Measuring Height ~ 

For height, just like width, you’ll always measure from edge to edge, inside the frame at the spot you plan to mount your installation brackets. Measure the height in three locations -- left, center, and right. 

If your product is a roller shade, a solar shade, a sheer shade, or a vertical blind, use the shortest of the three measurements. For all other blinds and shades, use the longest. 

And that’s it, you’re done measuring for an inside mount!  Now let’s see how to measure for an outside mount.

For this type of mount, instead of fitting your product into the window opening, it’s more about the size you want your window covering to be, making sure that your size exceeds the window opening by at least 2 inches on all sides. Your product will be made to the exact measurements you specify. 

This gives you a little more freedom to choose your size, but you should bear in mind a few considerations. For one, you should include additional height for the mounting brackets, which are up to 2 1/2" tall. 

If you’d like more privacy and light blockage, add extra width on the sides, top, and bottom. 

Considering a roller or solar shade to cover your window? Add an extra 2” to your measurement to accommodate the difference between the roller and the fabric. 

Finally, be aware of obstructions that might get in the way of mounting your blind or shade, especially window molding. Some products are available with spacer blocks or extension brackets that enable the window covering to be mounted farther away from the wall, thus clearing any obstructions. 

And now you know how to measure rectangular windows for any type of window covering!  If you still feel like you could use some assistance, call 800-505-1905 to speak with one of our expert window decorators for free. Or consider our affordable and easy-to-use professional measure and installation services from if you’d rather leave it to the pros! Either way, we’ll help you get the right measurements, so you can achieve the perfect look!