55 Warren Street, London, W1T 5NW Tel: 020 7278 4990

How to Measure your Windows

Just read the easy to follow instructions below. Then all you'll need is a steel tape measure, not cloth tape - they stretch. But take care, accurate sizes are essential.
We'll take it from there. In no time at all you'll receive your tailor-made blinds to fit your window perfectly.
If you have any other questions about measuring, please call us on 0207 278 4990 or 0208 340 1544.


Measuring for Curtains

measuring curtains

Width (all headings)

Measure the entire width of your pole or track. If you don’t have one in place yet, measure the width of your window recess and add 30cm

Drop (pencil & pinch pleat)

Measure the distance from the top of the track or if you have a pole, the bottom of the ornamental ring to 1cm above the floor (2/3cm if you have not yet had carpet fitted but intend to) or 4cm below the window sill.

Drop (eyelet heading)

Measure the distance from the top of the pole to 1cm above the floor (2/3cm if you have not yet had carpet fitted but intend to) or 4cm below the window sill. 

Please Note: 
We manufacture all Made-to-Measure-Curtains to a minimum of 100% fullness (Double Width*) except in the case of eyelet heading** in which case we manufacture to a minimum of 75% fullness.
All Made-to-Measure curtains are manufactured to the nearest Half Width (1 Width = 130cm*).  Please see an example below: 

Track/Pole Width: 195cm. (Pencil pleat headings only) 

Each curtain panel would have a fabric width of 195cm* generating a total fabric amount of 390cm*.  This is to allow for a generous gather. 

In essence, the amount of fabric you receive will be approximately double the Track/Pole width specified for pencil pleat. 

* Fabric Widths can vary slightly (10cm either way) 

** Eyelet size: 4cm opening 

Measuring for Blinds

First of all, identify if your window has a recess and decide if your blind will fit inside or outside of this space. Check there's nothing within the recess that could prevent the blind from being fully extended, like protruding handles, phone sockets or fixtures. 

A deep window recess provides space for your blinds to fit neatly inside for a flush finish, but if you have a shallow recess or prefer to keep this space clear, fit your blind outside the recess. For blind fitting without using a recess space we recommend allowing a 5cm (2") overlap either side of your window and an additional 10cm (4") to the length for optimum blind performance.

Measuring a Window with a Recess

  • Use a metal tape measure for accuracy. Measure the width at 3 different points as it may not be consistent along the entire recess. Measure at either end and in the middle, and use the smallest measurement as your width guide. For venetian, roman and roller blinds reduce the width by 1cm to allow for smooth extension.
  • To measure for blind length, take the same approach using the metal tape measure from the top of the recess to the windowsill at 3 points and note the narrowest point. For vertical blinds, we recommend you reduce the length by 1cm to prevent the fabric from catching on the sill.


Measuring a Window without a Recess

  • Use a metal tape measure for accuracy. Measure across the window width, adding an extra 10cm (4") to the total width to allow a 5cm (2") overlap either side of the window to block out light effectively. For roller blinds add a further 5cm (2") to the width to allow room for the operating mechanism.
  • Decide where you want the bottom of your blind to end and measure the length of the window from the top of the fitting to this point.

Additional Advice on Measuring for Blinds

Check your measurements twice to avoid the frustration of mistaken purchases and ill-fitting window dressings.

Many readymade blinds can be cut to provide a better fit, so if your windows don't quite match up to standard blind measurements, buy a blind with a longer width and length than necessary and carefully follow the product instructions to trim it down to size at home.

Fitting blinds without or outside a recess requires a bracket or track to be fitted above your window, fixed directly to the wall or to a wooden batten more than 5cm (2") above your window frame. Measure from the top of the fitting to the sill to ensure your blind will extend to provide full coverage.

Roller blinds are better fitted external to the recess. Within a recess the control mechanism for roller blinds requires additional room which will lead to a wider gap being present between the blind and wall and have an impact on the efficacy of the window covering.

Inside a recess, venetian, roller and roman blinds will need clearance space either side to ensure the sides don't drag on the wall during extension, therefore the overall width should be reduced by 1cm. For vertical blinds, the length measurement should be reduced by 1cm to ensure the panels extend smoothly across the window without dragging on the window sill.

If your windows have an unusual shape or size, our Made to Measure blind service offers a practical solution.