Calculate carpet square footage and square yards from room dimensions and waste allowance. Use it for early carpet planning before roll layout and installation.
Enter your measurements and material details.
Actual carpet orders depend on roll width, pile direction and seam layout, not area alone.
The calculator finds rectangular floor area, adds the selected allowance and converts square feet to square yards. It is best used as an early area check before an installer lays out full roll widths and seams.
Measure the widest length and width of the carpeted space and include closets that will use the same material. For multiple rooms, calculate each area and add them before comparing with an installer layout.
About 11.11 square yards.
Roll width, seams, pattern direction and room shape can require extra material.
Yes if they will receive the same carpet.
The area can be used for padding, but package coverage should be checked separately.
Use the stair carpet calculator for repeated tread and riser dimensions.
Using the example inputs shown in the calculator — Room length (ft) = 15, Room width (ft) = 12, Extra allowance (%) = 10 — the result is 198 sq ft. This demonstrates the formula with a complete set of numbers rather than a hidden assumption.
The result breakdown also shows Net floor area: 180 sq ft; Square yards: 22 yd². Replace the example values with field measurements and the exact product coverage, yield or package size you plan to buy.
For this carpet calculator, the inputs with the greatest practical effect are room length, room width and extra allowance. Recalculate when any of those change; do not reuse a result from a different room, run, layer depth or product specification.
Carpet Calculator is intended to help with quantity planning and arithmetic. It does not inspect the site, choose structural dimensions, determine code compliance or replace manufacturer installation instructions. Conditions such as slope, substrate quality, moisture, soil, framing, access and workmanship can change the final amount required.
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