Carpet Calculator
Convert room size into carpet square yards - the unit most carpet is priced and sold by.
Carpet needed
22 sq yards
198 sq ft with waste
- Measured sq ft
- 180
- Order sq ft
- 198
- Estimated cost
- $616.00
- Waste
- 10%
Installer measurements can differ once roll width and seam layout are planned. Use this for budgeting.
How this calculator works
Carpet is commonly sold by the square yard. Divide square feet by 9 to get square yards, then add waste for seams and matching.
Wide roll goods and pattern matches can increase waste beyond a simple area calculation.
square yards = square feet ÷ 9
- 1 square yard = 9 square feet
- Add waste for seams and pattern match
- Pad/underlay is usually sold separately
Frequently asked questions
How do I convert square feet to square yards of carpet?
Divide square feet by 9. A 12×15 room is 180 sq ft, or 20 square yards before waste.
How much extra carpet should I order?
5–10% is common for basic rooms. Patterned carpet and multiple seams may need more - ask the installer.
Is carpet priced by the foot or yard?
Usually by the square yard (or linear yard of a specific roll width). Always confirm the unit on the quote.
Related calculators
Keep planning your project with these tools, or browse the Interior Finish category.