Square Footage Calculator
Area = Length × Width20×15=300 sq ft
Free online tool
Square Footage Calculator
Enter the length, width and preferred unit.
Instant calculation
Square Footage Calculator
Enter the length, width and preferred unit.
Your result
Calculation
Your numbers stay in this browser. Nothing is uploaded or saved.
Three clear steps
How to use this calculator
- 01
Enter length
Type the length of the space.
- 02
Enter width
Type the width of the space.
- 03
Select unit
Choose the measurement unit for the result.
The formula
How this calculation works
Multiply length by width. Select cm, meters, feet or inches for the unit.
Check the method
Worked examples
Each example follows the same formula used by the calculator.
Room 20 ft × 15 ft — square footage?
20×15=300 sq ft300 square feetCommon questions
Questions about this calculation
What is the Square Footage Calculator?
The Square Footage Calculator helps you calculate the area of a rectangular space in square feet or square meters. Enter your values and select Calculate to get an instant result.
How is the result calculated?
Multiply length by width. Select cm, meters, feet or inches for the unit.
Can you show an example?
Example: Room 20 ft × 15 ft — square footage? — 300 square feet.
Is my data saved when I use the Square Footage Calculator?
No. All calculations run locally in your browser. Your inputs and results are never uploaded, stored or shared with anyone.
Is the Square Footage Calculator free to use?
Yes. The Square Footage Calculator is completely free. No account, sign-up or payment is required. It works on mobile, tablet and desktop.
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