When you’re ordering custom curtains, the fullness ratio—how much fabric you use compared to the width of the window—decides whether your drapes look crisp and tailored or flat and skimpy. This guide breaks down what fullness is, how to choose the right ratio for your space, and how to calculate fabric width for a designer finish.
What Is Curtain Fullness?
Curtain fullness is the ratio between the total width of your curtain panels and the width of your rod or track. Common choices include:
-
1.5× — Sleek, modern waves; less volume.
-
2× — Balanced everyday look; our most popular.
- 2.5–3× — Hotel-level luxury; deep folds and drama.
For a helpful industry overview, see Rosebrand‘s curtain fullness guide.
Choosing Fullness by Header Style
- Grommet: 1.5–2× for clean, modern waves.
- Pinch Pleat / Box Pleat: 2–2.5× for structured elegance.
- Ripple Fold / S-Fold: Follow tape/track specs; typically 1.6–2×.
- Rod Pocket: 2–2.5× to avoid a tight, bunched look.
- Sheers: 2–3× to create soft depth in front of light.
- Blackout: 1.7–2.2× to balance coverage and bulk.
Examples (Quick Math)
Rod width = 80″ →
- At 2× fullness: total fabric width ≈ 160″ (e.g., two panels ≈ 80″ each).
- At 2.5× fullness: total fabric width ≈ 200″ (two panels ≈ 100″ each).
How to Determine Your Curtain Fullness (Step-by-Step)
- Measure your rod/track width (include returns/overlap if applicable).
- Pick a header style (grommet, pleat, ripple, etc.).
- Select a fullness factor (1.5× to 3×, per style and room vibe).
- Multiply rod /track width × fullness = total panel width needed.
- Decide panel count (usually two equal panels).
- Panel width: Total panel width/panel count
- Panel length: The length from the top of the rod to the floor, or from the track eyelet to the floor.
Pro Tips
- High ceilings or wide spans benefit from 2–2.5× for presence.
- Small rooms and minimalist interiors often look best at 1.5–2×.
- Pair sheers (2–3×) with lined drapes (1.7–2.2×) for light control and dimension.
Still don't know how to measure for custom curtains?
Get clear on the guides below:
FAQs
What fullness looks most “custom”?
Typically 2×. It reads full without being bulky.
Do blackout drapes need as much fullness?
Not always. 1.7–2.2× often provides full coverage with smoother stack-back.
How about sheers?
Sheers love volume. Aim for 2–3× for soft, layered waves.
