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How to Measure for Your New Window Blinds

Measuring for your new blinds couldn't be simpler. It's an easy way to save lots of money and takes just minutes; you'll wish you'd done it sooner! All you have to do is follow our easy, step-by-step guides below.

Standard Windows

Recess Fitting

This is the measurement you need to take if you want your blind to fit inside the window recess. Measure the full width and height of the recess [the size of the hole if you like] and we will make the appropriate deductions to ensure a perfect fit.


  • measure in 3 places for both the width and the drop, use the smallest measurements
  • don't make any deductions, we will do that for you to ensure your blind fits perfectly
  • use a metal tape measure, cloth ones can stretch and give you inaccurate measurements

Exact Fitting

This is the measurement you need to take if you want the blind to hang outside the recess overlapping the window. In this case we will make the blind to your specified size with no deductions.


  • measure the exact width of the area you would like the blind to overlap. To minimize light leakage we recommend that the blind overlaps the window recess by at least 70mm at the top and 50mm each side
  • the overlap at the bottom of the blind is a matter of personal choice but please take into account obstacles such as radiators
  • if you are replacing an existing blind with one of the same size simply measure the blind and specify exact fitting, we will make you one the same size
  • Top Tip: Measuring for your roller blind is slightly different because the overall width of the blind including the brackets is approx. 3.5cm wider than the fabric. With this in mind you can choose to measure from where the brackets will sit ('bracket to bracket') or the area the fabric will cover ('fabric width').

Bay Windows

Measuring for bay windows couldn't be easier, please choose the correct guide for the product you require.

Loft Windows

VELUX ®, Fakro, Dakstra and Rooflite loft windows

Every VELUX ®, Fakro, Dakstra and Rooflite roof window carries a data plate that details the code of the window. Check you window's code number and simply select that when ordering your blind.


  • put your tape measure away, you don't need it!
  • order the correct code and your blind will fit perfectly
  • if your data plate is missing measure the visible glass size and give us a call, we may be able to identify your window code

Keylite loft windows

Keylite make it a little more difficult for you to save money on replacement loft blinds by not putting an identification code on the windows.

To identifiy the correct size blind for your keylite window you just need the size of the window unit. If the window is an old unit and you no longer have access to the size ordered simply measure the visible glass (width and drop), give us a call and we can tell you which blind to buy.

Measuring for Conservatories

EasiFIT Pleated & Venetian Blinds

Both our pleated and venetian EasiFIT conservatory blinds fit neatly inside the frame of your window or door to effectively cover the visible glass. The little clips slot easily between the frame and the glass for a strong and secure hold on all UPVC double glazed windows and doors with a rubber bead.

For accurate measurements, make sure you use a metal tape; cloth ones can stretch leaving you with inaccurate readings. Measure accurately to the nearest mm and remember to measure each window and door individually, don't assume that they are all the same size!

Video Guide

An Easy Measuring Guide for Your Easi FIT Blinds!

The video will walk you through the straightforward process of measuring for your blind. Or, if you prefer, you can read through the process using the simple step by step instructions below.

1. EasiFIT blinds are specially designed for UPVC windows with a rubber bead and measuring for them couldn't be easier. All you need is a pen, a pad and a metal tape measure.

2. Firstly, measure the frame from edge to edge (measuring accurately to the nearest millimetre) at the top, middle and bottom then write down the shortest measurement.

3. Then simply repeat this step for the drop, measuring the left, the right and the centre. Again, take a note of the shortest measurement.

4. Don't forget to measure each door and window individually; don't assume that they're all the same size. And that's it, nothing more to it! Measuring for your EasiFIT blinds really is that simple.

PerfectFIT Blinds

Our PerfectFIT blinds have an integrated frame that sits snugly inside your conservatory window. The frame simply slots securely into place in a matter of minutes without the need for drills or any other tools.

For accurate measurements, make sure you use a metal tape; cloth ones can stretch leaving you with inaccurate readings. Try to measure accurately to the nearest millimetre and remember to measure each window and door individually, don't assume that they are all the same size!

Video Guide

Easy to Follow Step by Step Measuring Guide

The video will walk you through the straightforward process of measuring for your blind. Or, if you prefer, you can read through the process using the simple step by step instructions below.


1. Measuring for your PerfectFIT blind is quick and easy. First, check the distance between the window beading and any possible obstructions, such as the operating handles. This should be no less than 6mm.

2. Next, measure the depth of the window from glass to beading. To do this, simply place a credit card over the corner of the frame and use a metal ruler to take the measurement. This will usually be between 18 and 24mm.

3. Before measuring, check that the seals on your frame do not protrude over the glass by more than 6mm. Then simply measure the visible glass area of your window. Measure from the inside edges of the frame where the glass meets the rubber bead. You should not include any of the beading or rubber seals in your measurements. Measure the top, the middle and the bottom of the window to the nearest mm and note down the shortest measurement.

4. For the drop, simply repeat the previous step, measuring the left, the right and the centre. Again measure to the nearest mm and make a note of the shortest measurement. Don't forget to measure each window and door individually, don't assume they are all the same size! If you have any doubts, all of these steps are demonstrated in detail in our PerfectFIT video measuring guide at the top of the page.

Measuring for Shutters

We like to keep things simple here at Blinds 2go and our shutter measuring guide is no exception. Just follow these easy steps to measure your windows and you can save hundreds if not thousands of pounds on shutters making your home beautiful. Ready? Here we go...

Check for squareness

First of all, you need to check that your recess is pretty much square, making it suitable for our shutters. All you need to do is measure the recess diagonally from corner to corner on both sides. Then, compare the two measurements.

If the difference is 12mm or less, you're good to go. If they vary by any more than that, then unfortunately you won't be able to fit shutters in your recess. If this happens, don't worry, there are plenty more fish in the sea, or, in this case plenty more blinds and curtains to choose from across our sites.

Ready to measure?

First, decide where your shutters are going to sit. This can be at the front of the recess or inside the recess. Either way, measure at the place you plan to fit your shutters. Don't worry about making any deductions, we'll do all the maths for you.

Front of recess fitting

For a front of recess fitting you need to measure at the front of the recess.

Measure the width at the top, middle and bottom.

Next measure the drop on the right, in the centre and on the left. Write down the smallest measurements, these are the sizes you will use to place an order.

Inside recess fitting

For an inside recess fitting, you can position your shutters anywhere you choose inside the recess, even flush against the window. Just make sure you measure far enough forward so that you avoid any obstructions such as window handles.

Mark where you are going to fit your shutters and measure the width and the drop in 3 places as you would for a front of recess fitting.

Again you need to note down the smallest measurements.

Measuring for a mid rail

For taller shutters over 1400mm we put in a stylish midrail to give your shutters some support. The great thing about a midrail is you can customise its height so that it looks best. Usually, people tend to position their midrails at the same height as any transom bars on their window.

There are just a couple of small restrictions when customising your midrail. For structural reasons they must be a minimum of 380mm and a maximum of 1300mm from both the top and bottom of your shutter panel.

To position your midrail, simply measure from the bottom of your recess to the midpoint of where you want it to sit. If this is level with your transom bar, measure from the bottom of the recess to the centre of the bar.

Top Tips

See? Measuring for your shutters really is simple. To recap, here are the 3 golden rules to remember:

  • Measure both diagonals of your recess and make sure the difference is less than 12mm.
  • Always measure at the place you plan to fit your shutters.
  • And finally, measure in 3 places across the width and height and take the smallest measurement.
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