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How to Measure Roman Blinds

DIY Made Easy!

Measuring for Roman blinds is so much easier than you think!  We have all the tools to teach and guide you through the simple process.


Width (mm)Drop (mm)

Minimum width: 250 mm

Minimum drop: 300 mm

Maximum width: 3000 mm

Maximum drop: 3000 mm

Roman Blinds - How to Measure

In this short video, Michael shows you how to measure your window for Roman Blinds

Check Measure Work Sheets

Before you start measuring, print off one of our handy Roman Blinds Check Measure Worksheets to record your measurements

How to Measure - Outside Mount

Roman Blinds are better suited to an Outside mount and can make a great feature of your window. 

Consider using a sunscreen roller blind inside the window frame for daytime privacy and light control.

Measure the width from the edge of the architrave to the edge of the architrave at the top of your window frame, then add approximately 50mm for each side (if space permits) to give you better light control and privacy.

Measure the drop from the top of the architrave to 50mm past the bottom of the architrave for all elevated windows. If your window drops to the floor measure from the top of the architrave to 20 mm above the floor - this will allow your fabric to settle and stretch over time. Measure on the Left-hand side, through the centre of the window and at the Right-hand side. Take the smallest measurement as your drop.

Please note: iseekblinds will not make any deductions for outside mounted blinds.

Roman blind Stack height

Stack Height

If you want to raise your roman blind above the window frame to maximise your view, the stack height of a roman blind is approximately 300mm.

Take this into consideration when measuring your drop.

Roman Blinds head rail


Acmeda heavy duty 4:1 geared chain drive system comes standard on all blinds.  All Acmeda products have been built to last a lifetime and undergo stringent testing for unsurpassed performance and reliability, ensuring you receive a high-quality custom-made product.

Head Rail

A fresh and contemporary design, the Acmeda ‘No Sew Headrail’ features a slim square profile design, which moves the fabric up to hide the brackets and then cascades down for a clean modern look.  Easily installed, this blind system ensures smooth, quiet movement with the strength to manage fabrics of any weight - small or large.

Roman Blind fabric covered bottom rail

Bottom Rail

All Roman blinds come with a fabric covered tear drop bottom rail.  This beautiful bottom rail is designed to be aesthetically pleasing from both the front and back.

Roman Blind Back Batterns

Back Battens

Our roman blinds are cleverly designed with a smooth and slimline back batten system, which simply slides over the fabric - meaning no stitch holes, no puckering and no light penetration resulting in a neater and refined look.  Each batten comes with a colour matched end cap.

Roman blind continuous loop chain


Continuous loop chain (no joiner) to ensure a smooth operation.

Choose from metal, black, white or stainless steel.

Stainless steel is recommended if you live near the coast.

Michael's Tips

  • Always measure in millimetres (mm)
  • Always use a steel tape measure - make sure the tape measure is straight and tight when you take your measurements.  
  • Measure all windows, even those that appear to be the same width and height
  • Add your room name to each of your blinds as you order them.
  • Do not take any deductions 
  • Measure at the top of the window frame where the blind is to be installed.  This is where your brackets will be placed.
  • If you live near the coast, order your blinds with stainless steel chains.

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