Carpet Calculator estimates carpet square yards, roll-width strips, seams, and full-roll equivalent for rectangular room carpet layouts. Enter job dimensions in U.S. customary units, adjust supplier assumptions, and get purchase-ready quantities instantly.
Loading calculator…
Compare both roll orientations, round strips by roll width, account for available roll length and seams, then apply cutting allowance.
The calculator compares both 90-degree strip orientations using roll width and available roll length; verify doorways, pattern repeat, seam placement, stairs, and irregular rooms with the installer's cut plan.
Example: with room length 16 ft, room width 12 ft, matching rooms 1, carpet roll width 12 ft, the carpet calculator returns 23.47 sq yd for carpet to order. The supporting check is full-roll equivalent: 1 rolls. Replace the prefilled measurements and supplier assumptions with the project values before ordering.
Carpet Calculator estimates carpet square yards, roll-width strips, seams, and full-roll equivalent for rectangular room carpet layouts. Enter job dimensions in U.S. customary units, adjust supplier assumptions, and get purchase-ready quantities instantly.
Use the result as a planning estimate, then verify field measurements and product-specific data before ordering or building.
The implemented formula, assumptions, and worked example on this page are the calculator-specific reference. BuildYard's broader rules are documented in the Calculation Methodology and Sources & References.
For material density, coverage, yield, dimensions, package quantity, price, and other product-specific values, the current manufacturer or supplier specification should override a planning default.
Last reviewed: September 15, 2026, as part of the site-wide calculator workflow validation pass. See the BuildYard Changelog.
Learn how net floor area, pattern waste, carton coverage, whole-package rounding, room layout, and product specifications affect flooring quantities.
Read guide →Estimating basicsLearn how to use construction calculators, choose project inputs, verify supplier data, handle waste and rounding, and check estimates before ordering.
Read guide →It converts the measurements for rectangular room carpet layouts into the buying units normally used for carpet square yards, roll-width strips, seams, and full-roll equivalent, with the relevant waste, package, weight, or cost outputs shown on the result card.
The geometry is calculated from the values you enter. Final ordering accuracy still depends on field measurements, supplier density or coverage, product dimensions, compaction, cuts, and the selected allowance.
The calculator compares both 90-degree strip orientations using roll width and available roll length; verify doorways, pattern repeat, seam placement, stairs, and irregular rooms with the installer's cut plan. Confirm the selected product, field conditions, and purchasing increments before placing the order.
Yes for indivisible buying units such as bags, sheets, bundles, pallets, boxes, bars, and truck loads. The calculator rounds those purchase quantities up automatically.
Hardwood Flooring Calculator estimates solid hardwood square footage and cartons for straight-lay hardwood rooms.
Open calculator ↗FlooringEngineered Hardwood Calculator estimates engineered wood flooring cartons for floating, glue-down, or nail-down rooms.
Open calculator ↗FlooringLaminate Flooring Calculator estimates laminate planks and cartons for floating laminate floors.
Open calculator ↗FlooringVinyl Plank Flooring Calculator estimates LVP or vinyl plank cartons for floating and glue-down resilient plank floors.
Open calculator ↗