Construction calculator
Square Feet Calculator
Calculate rectangular floor, wall, or land area in square feet.
How the calculation works
Multiply length in feet by width in feet: area = length × width.
Example: A 12 ft by 10 ft room has an area of 120 ft².
Important limitations
This tool provides a mathematical estimate based only on the values entered. It does not account for regulations, taxes, lender fees, medical circumstances, structural requirements, or other project-specific factors unless explicitly stated.
Frequently asked questions
How accurate is the square feet calculator?+
The calculation follows the displayed formula and retains full numeric precision before formatting the result.
Can I use the result professionally?+
Use it as a planning estimate. Confirm regulated, medical, financial, or construction decisions with a qualified professional.