Carpet Calculator

Use it when your task matches one of these common needs: Estimate carpet for a simple rectangular room. Convert square feet into square yards. It works best when you already know room length, room width, roll width, and waste percent.

In plain language: The calculator uses floor area = length x width, adjusted area = floor area x (1 + waste percent / 100), square yards = adjusted area / 9, and approximate linear feet = adjusted area / roll width. The examples on the page are there so you can compare your inputs with a carpet room example before copying the answer.

Room length and width: the simple rectangular floor area before closets, seams, or stairs are handled separately. Roll width: the carpet roll width from the product, commonly 12 feet for many carpets. Waste percent: extra carpet for trimming, seams, closets, pattern direction, and installer layout.

Read the headline estimate first, then check the material, waste, coverage, and unit lines. For project tools, the supporting lines are often the difference between a rough idea and a list you can actually shop from.

Carpet orders depend on seam placement, stairs, closets, hallways, doorway cuts, pile direction, pattern matching, roll width, tack strips, padding, transitions, dye lot, and installer layout. Also check whether the room needs more than one strip, whether the pile or pattern must run one direction, and whether closets, stairs, or hallways were measured separately.

Divide square feet by 9 because one square yard is 3 feet by 3 feet. A 180 square foot room is 20 square yards before waste, then 22 square yards with 10% waste.

Carpet comes from a fixed-width roll. A room that fits inside a 12 foot roll may need one piece, while a wider room may need seams or a different roll width. This calculator gives a simple roll-length estimate, not a full cutting diagram.

Only as a warning, not as a layout plan. Seam placement, pile direction, pattern repeat, and matching can change the order, so use the result as a planning number before an installer measures the room.

Measure closets, stair runs, landings, and hallways separately. A simple rectangular room entry can miss extra cuts, nosing, turns, and trim waste.

No. It estimates carpet material area and roll length only. Padding, tack strips, transitions, delivery, furniture moving, old-carpet removal, and labor need separate pricing.

No. The calculator runs in your browser tab. Your recent answers stay only on the page while you use it, and they are not sent to a server.