📐 Square Footage Calculator
Enter the length and width of a room or area to get its square footage, along with handy conversions to square yards and square meters.
What Is Square Footage?
Square footage is the total area of a two-dimensional space, measured in square feet. It is the standard unit used across the United States for describing the size of rooms, homes, flooring jobs, and construction projects.
How the Calculation Works
For a rectangular area, square footage is simply length multiplied by width: area = length x width. If you are measuring several identical rooms or sections, this calculator multiplies that single-area result by the number of sections you enter to give you a project total, and also converts the total into square yards and square meters for convenience.
Tips for Accurate Measurements
- For irregular rooms, break the space into rectangles, calculate each separately, and add the results together.
- Measure wall-to-wall at floor level for the most accurate flooring or carpet estimate.
- Add a small waste allowance (commonly 5 to 10 percent) when ordering materials like tile, flooring, or paint.
Note: This calculator provides general estimates for planning purposes. For material orders, confirm exact measurements on site and consult your supplier’s recommended waste factor.