How to calculate the fabric needed for a pencil pleat curtain?

by Mari
(UK)

Hi,


I would like to know how much fabric I will need to sew a pencil pleat curtain for a L shaped window pole.

I can sew, but I dont know how to calculate the amount of fabric I'll need to sew this curtain. The length of the curtain should be 114 inches and 62 inches drop.

Thank you

Mari

Hi Mari

The way you calculate the amount of fabric needed for making pencil pleat curtains is very simple.

To start with you need to double the width of your curtain pole/track. This allows your curtain to have enough gather when closed.

In your case it means 114 inches X 2 = 228 inches.

The next step is to divide the 228 inches by the width of the fabric you want to use. Most fabrics are about 54 inches (137cm) wide.

So it is 228 divided by 54 = 4.22 widths of fabric needed. Obviously you can't have 4.22 widths in a pair of curtains. So you need to round down to 4 widths or round un to 5 widths.

This would give you either a pair of curtains with 2 widths or 2.5 widths in each curtain. My personal preference is to round up and have a fuller curtain.

Now you take the curtain drop size of 62 inches and for plain fabric you add another 8 inches for bottom hems and top turn over.

This would give you a fabric drop of 70 inches multiplied by either 4 or 5 widths.

70 X 4 = 280 inches ( 7.77 yards) or ( 7.17 Metres)

If you are using a patterned fabric. Then you would use the curtain drop plus the pattern repeat. Thiis is as long as it is more than 8 inches.

I hope this helps you calculate hpw much fabric you need to make your own curtains. I will have to create a calculator that will do this automatically.


All the best

Lee

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