• First of all measure the width of your of your track or pole. If you have no fittings in place, measure the width of your window and add on 12” (30 cm). As a rule of thumb a track or pole extends 6” (15cm) either side of the window and is also positioned 6” (15cm) above.

• Measure the drop. For a track, measure from the top of the track to 6”(15cm) below the windowsill for short curtains; for long curtains, measure from the top of the track to the floor. Measure from the bottom of the curtain rings if you have a pole. If you want the curtains to pool ad 7”(18cm).

• The amount of fabric will be dictated by the type of curtain heading. For tab top and eyelet curtains allow 2 times the width of the pole. For pencil pleat tape, 2 - 2 ½ times; for hand sewn headings in pinch pleat or goblet pleats 2 ½ times to 3 and box pleat 3 times.

• Now divide the figure you’ve calculated for the curtain width by the width of fabric. For example, a pencil pleat curtain with 2 ½ times fullness of a pole which is 78” (200cm) wide = 195”(500cm) divide this by 54” (138cm width of fabric) =3.6 widths, so round this up to 4 widths.

• The drop for example is 84” add 12” (30cm ) for the hem =96”(2.46m) times by the 4 widths = 384” divide by 36” = 10.66 yards or by 39” =9.84 metres. If there is a pattern repeat divide this into your drop which includes the hem allowance and round up to the next pattern repeat.

How to measure
for a Roman Blind

Inside recess

First of all measure the drop, you will need to measure exactly where the blind will fit in the recess then take 3 measurements one on the left ,in the middle, and one on the right.

Now measure the width from the top, in the middle, and at the sill level. It is surprising how windows can be out by ¼ “or so.

We will take the smallest measurements.

How to measure
for a Roman Blind

Outside recess

The blind should sit 4”(10cm) above the window frame and either sit on the sill or 2-4”(5-10cm) below. What ever you think looks right.

Measure the width of the window and again add 2-4”(5-10cm) either Side of the frame.