How Much Fullness Should Curtains Have? A Simple Guide

Fullness is how much fabric your curtains have compared with the track width. It is the main reason some curtains look rich and others look flat and stretched.

Quick answer: Curtain fullness is the total fabric width compared with the track length. Use about 1.5x to 2x for eyelet curtains, 2x to 2.5x for pinch pleat, 2.2x to 2.5x for wave curtains and 2.5x to 3x for sheers.

How fullness is measured

Fullness is written as a ratio. 2x fullness means the total curtain width is twice the track length. For a 3 metre track at 2x, you need 6 metres of fabric width across all panels.

Recommended fullness by style

• Eyelet curtains: 1.5x to 2x
• Pinch pleat curtains: 2x to 2.5x
• Wave curtains: 2.2x to 2.5x
• Sheer curtains: 2.5x to 3x, because thin fabric needs more to look full
• Roman blinds: 1x, they are flat

Too little fullness

Curtains look flat when closed, gaps appear between folds, and light leaks through. This is common with ready-made panels on wide windows.

Too much fullness

Curtains are bulky, stack wide when open and cover part of the glass. Heavy fabrics at 3x can also strain the track.

A worked example

Window 2.4 m wide. Add 20 cm each side, so the track is 2.8 m. For wave sheers at 2.5x, you need 7 m of fabric width, usually split into two panels of 3.5 m each.

Measure first using our window measuring guide. Also see what a wave curtain track is.

Frequently asked questions

What fullness looks most luxurious?

2.5x for most fabrics gives rich, deep folds without being bulky.

Does fullness affect stack-back space?

Yes. More fabric takes more space when curtains are open, so extend the track beyond the window.

Do blinds need fullness?

No. Roller and Roman blinds are flat and sized to the window.

Related guides

• Blackout vs Dim-Out vs Sheer Curtains: What Is the Difference?
• The Best Curtain Fabrics for Dubai’s Hot, Dusty Climate