Carpet Calculator
Estimate carpet area, linear roll length, padding, seam tape, waste and total material cost for a rectangular room.
Default project preview
33.24 yd²
Measured floor area
272 ft²
Waste-adjusted area
299.2 ft²
Underlay order
31.73 yd²
Estimated seams
1
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Measured area = room area + extra areas. Order area = measured area × waste factor. Linear roll length = order area ÷ roll width.
BuildMeter Guides
Understand the measurements and assumptions
Use these visible reference guides before changing project inputs or planning allowances.
FAQ
Carpet Calculator questions
Why does carpet use square yards in the US?+
Carpet is commonly priced by square yard, while rooms are often measured in square feet.
Can carpet be estimated only by floor area?+
Area is a starting point, but roll width and seam layout can create additional waste.
Should closets be entered separately?+
Yes. Add their combined floor area in the extra-area field.