How Does This Calculator Work?
The calculator adds your chosen waste percentage to the room's square footage, then divides by 9 (since one square yard equals 9 square feet) to convert to the unit carpet is priced in.
Carpet is typically sold by the square yard, and installers need extra material for seams, pattern matching, and irregular room shapes. This calculator adds a waste percentage to your room's raw area.
Example Calculation
Bedroom Example
A 200 sq ft bedroom, 10% waste allowance.
(200×1.10)/9 ≈ 24.4 sq yards.
Tips
A 10% waste allowance is typical for simple rectangular rooms; use 15–20% for rooms with lots of corners, closets, or stairs.