Quick answer
Estimate carpet area for rooms and understand why roll width, seam layout and installation direction can raise the actual order quantity. Use the working RenoMetric calculator below for the actual estimate, then use this page to check assumptions, package rounding and project-specific considerations.
Open the working Flooring calculator
Formula
Worked planning example
A 13 × 11 ft bedroom measures 143 ft², but roll width and seam placement may require ordering more than the geometric area.
Common uses
- Bedrooms
- Living rooms
- Hallways
- Rental turnovers
How to get a better estimate
Measure the actual project rather than relying on listing dimensions. For irregular spaces, split the surface into simple measurable sections and add the results. Use the exact product label for package coverage, yield, density or square-foot coverage whenever it is available.
Keep waste and package rounding as separate steps. Waste covers cuts, breakage, pattern matching and unavoidable offcuts. Package rounding reflects the fact that many materials are sold only in complete bags, boxes, bundles or cans.
Before you buy: this page is a planning guide, not a contractor quotation or structural design. Verify final quantities with the product manufacturer, supplier or installer when project conditions could materially change the result.
Carpet Calculator FAQ
Is square footage enough to order carpet?
Not always. Carpet is commonly supplied in fixed roll widths, so a professional layout can require extra material for seams and direction.
Does the calculator include stairs?
Treat stairs separately. Treads, risers and nosings need their own measurements and installation allowance.
Can I convert square feet to square yards?
Yes. Divide square feet by 9 for a basic area conversion, then confirm the installer’s ordering method.