Rug & Curtain Size Calculator
Find the right rug size for a room, or how wide and long curtains should be.
About the Rug & Curtain Size Calculator
Designers usually leave 12–24 in (30–60 cm) of bare floor around a room-sized rug, with at least the front legs of seating on it. Under a dining table, the rug should extend 24 in (60 cm) beyond the table so chairs stay on it when pulled out.
For curtains, mount the rod 4–6 in above the window and extend it 8–10 in each side; panels together should be 2–2.5 times the rod width so they look full when closed.
The formula
Rug = room − 2 × border; curtain width = rod width × fullness
Worked example
Example: Ideal rug = 11.7 ft × 9.7 ft
- Inputs: Size: A rug for a room; Units: Feet / inches; Room length: 15; Room width: 13; Bare floor around the rug: 20.
- Formula: Rug = room − 2 × border; curtain width = rod width × fullness
- Result: Ideal rug = 11.7 ft × 9.7 ft
Questions people ask
What size rug for a 12 × 14 ft room?
About 9 × 12 ft.
How long should curtains be?
Just clearing the floor, or touching it for a tailored look.