Square footage
Square footage: use length, width. Review the formula, worked example and calculation steps.
Inputs
Use the units shown—
Enter your values and select Calculate.
Formula & explanation
Area = length × width
Variables & units
- Length
- ft · minimum 0, maximum 1000000000000
- Width
- ft · minimum 0, maximum 1000000000000
Worked example
12 ft by 10 ft is 120 ft².
Assumptions
Rectangular horizontal area only. Add separate rectangles for irregular spaces.
Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.
Practice with an example
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