How to Measure for Roman Blinds – Step by Step Guide

Measuring for roman blinds takes a little bit of prep work, but it’s the key to a flawless fit and a finished appearance. Whether you’re inside mounting your blinds in a window recess or outside mounting on the wall or molding, our handy guide will help you measure just right and never make the mistake of ordering blinds that don’t quite fit.

First Thing: Inside Mount or Outside Mount

Contrast appearance, light control and fit to determine which is the best way to go for your windows.

✅ Inside Mount (Recessed Look)

These roman widnow blinds are mounted within the window frame

Offers a clean, built-in appearance

Ideal for deep window recesses

✅ Outside Mount (Wall or Frame Mount)

These window blinds extend outside the window Frame

Superior light block and privacy.

Perfect for shallower windows or uneven openings

How to Measure for an Inside Mount Roman Roller Blinds

Width: From the top, middle and bottom, measure the inside width. Record the narrowest measurement.

Height (Drop): Using a tape measure, measure from the top inside edge, down to the windowsill in three places. Use the longest measurement.

Note: Do not deduct for size; manufacturers will adjust for fit.

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How to Measure Outside Mount Roman Shades

Width: Measure the width of the window, and add 2 to 4 inches to both sides to ensure enough light control.

Height (Drop): Measure from where you plan to hang the blind (generally from the top of the frame, but you may wish to go taller if the space allows) to the bottom of the sill, window or structure.

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Pro Tips:

Make certain to use a steel measuring tape for accuracy

Cut and measure in inches or centimeteres (as specified by the supplier)

Double-check all numbers before ordering

Record anything which might be obstructing the windows i.e. handles or locks