Measurement
Quickly calculate rectangular area for flooring, paint planning, landscaping and other home projects.
Change the defaults to match your project and the product you plan to buy.
Project result
Convert rectangular dimensions into square feet or square meters plus perimeter, square yards and acres/hectares.
Planning estimate only. Verify product coverage, package size, supplier specifications and project requirements before purchasing.
Methodology
length × width
Applies to rectangular areas.
2 × (length + width)
Useful for trim, edging and boundary planning.
square feet ÷ 9
There are 9 square feet in one square yard.
square feet × 0.092903
Exact conversion is used before display rounding.
Measure length and width in the same plane and use finished dimensions that match the material or project you are estimating. For L-shaped or irregular areas, split the shape into rectangles, calculate each area and add them together.
Area is usually the first step, not the final purchase quantity. Flooring, tile, paint, sod and other materials add waste, coverage or packaging rules after the measured area is known. Use the related material calculator for the next step.
Reference
| Unit | Equivalent | Use |
|---|---|---|
| 1 sq yd | 9 sq ft | Carpet and some landscape measurements. |
| 1 m² | 10.7639 sq ft | Metric project area. |
| 1 acre | 43,560 sq ft | Large property areas. |
| 1 hectare | 10,000 m² | Large metric land areas. |
Questions
Break the room into two or more rectangles, calculate length × width for each rectangle, then add the areas.
No. Perimeter is a linear measurement around the edge; square footage is the two-dimensional area inside that boundary.
Not when measuring the physical area. Add material-specific waste later using the flooring, tile, sod or other relevant calculator.
Estimate flooring area, waste allowance and number of boxes for laminate, vinyl or hardwood projects.
Open calculator → InteriorEstimate tile quantity, project area, waste allowance and boxes for floors, walls and backsplashes.
Open calculator → InteriorEstimate wall area, gallons and purchase quantity for an interior room, including doors, windows, coats and paint coverage.
Open calculator →