How to measure for blinds

There are two types of fit to consider when measuring for blinds: within the recess and outside. By measuring several distances across the width and length, you can find an average reading. Once you have this, you should extend or reduce the final measurements to suit your chosen fit.

First and foremost, think about whether you want your blind inside or outside your recess, as the measurements you take will affect the final look. With things like fitting to recesses and measuring for different styles to think about, adding this new accessory can feel like a daunting task. However we can help you through the process of fitting your blind; our guide for measuring blinds will help you to bring that flawless fit to your home interior.

Deciding where the blind will hang

The first step in measuring for blinds is making the decision on where you want your blind to hang. Do you want the flush fit of a blind inside the recess, or would you prefer it outside? Think about what suits your interior before you start taking measurements.

A window recess is the inset area that your window sits within. Fitting your blind inside the recess can maximise space in your room, creating a window dressing that sits seamlessly in your interior and flat to your window. But if your window has a recess you have the option of fitting the blind inside or outside. If there is no recess, then you'll be measuring blinds to fit straight onto the wall.

Also take the time to think about the depth of your window. As a general rule, if the recess has a depth smaller than 60mm, or if the window opens inwards, the blinds should be fitted on the outside.

How to measure blinds in a recess (recess)

When measuring for blinds, you don’t need a full toolbox. A metal tape measure, pencil and a notepad will be everything you need to get the job done. Get started on your recess fit and record the width with your tape measure, taking down the measurements in your notepad.

Measure the width at the top of the recess, the middle, and the bottom to identify any variations. Then use the smallest measurement of the three when ordering your blind to make sure it fits perfectly.

Follow the same approach for the length of the blind, taking measurements at three different points of the window recess - left, middle and right - and provide us with the shortest one. This is commonly known as the recess drop measurement, as it's the length the blind needs to drop when extended – but it still has to be long enough to cover the entire window.

If you have a window recess, you can still decide to fit the blinds on the outside. Let's look at how to do that in this next section.

How to measure blinds outside a recess (exact)

Measuring for blinds without a recess or outside a recess is a simple process. Find the width of your window frame or recess and add an extra 120mm to the overall measurement, so that there’s 60mm overlap on either side. This will ensure your entire window is covered by the blind.

The next step is measuring the drop of the blind, taking into consideration how far down you want the blind to go when fully extended. As with a recess fit, simply measure from the top of the fitting to where the blind will drop to, taking into consideration any objects such as radiators that may obstruct your window dressing.

Additional information when measuring for roller and day night blinds:

Please note, whether you order Recess or Exact the cloth width will always be 35-40mm narrower than the overall size. Further to this if you are side fixing it is important to always state this as an exact measurement.

When measuring for roller blinds, please take the width measurement from the top of the window to ensure best fit.

Things to consider when measuring for blinds

When you’re measuring your blinds you will also need to consider things like the type of windows you have and the different blinds you may want to fit. We can help you adjust your measuring technique for the perfect fit.

If you have bay windows, for example, they may require a more specific fitting. There are different designs of bay window, such as a square bay, open, splay bay or angled bay, so you will need to be very specific with the size of the blinds you’re measuring for.

You will also need to take into account whether your window is suited to a blind, and think about any potential obstructions that may add to the width of your blind brackets. This includes air vents, window handles, locks or anything else that sticks out from the window.

How much we deduct for recess measurements

The following table is a guide to the amount we will deduct if you select ‘recess’ measurement.

Blind TypeWidth (mm)Drop (mm)
Roman Blinds 5 0
Vertical Blinds 10 10
Venetian Blinds 10 0
Day Night Blinds 5 0
Wooden Blinds 10 0
Roller Blinds 5 0
Panel Blinds 10 0



For more help with measuring for blinds, or getting a perfect fit, take a look at our simple step-by-step demonstration videos on the best way to approach each individual type of blind.

Measuring blinds to fit the windows in your home doesn’t have to be a difficult task. With these simple instructions, hints and tips you will have the perfect fit for your blind. Once you know how it's done, it’s on to ordering a blind that perfectly fits your window and interior. For the option to choose a tailor-made blind in a range of stylish designs, browse our full collection for the perfect finishing touch to your home.

Top