Square Footage Calculator
Calculate floor area in square feet and square metres.
Runs in your browser. Nothing is uploaded — your input is processed on this device and discarded when you close the tab.
Square Footage Calculator
How to use this tool
- Enter the length in feet.
- Enter the width in feet.
- Press Generate to see the area in square feet and square metres.
Worked example
A room 20 feet long and 15 feet wide has an area of 20 x 15 = 300.00 sq ft, which is 300 x 0.092903 = 27.87 sq m.
What this tool does not do / Limits
This covers rectangles only. For L-shaped or irregular rooms, split the floor into rectangles, calculate each one and add the results.
Frequently asked questions
How do I handle an L-shaped room?
Split it into two rectangles, work out each area, then add them together.
Is the square-metre factor exact?
One square foot equals 0.092903 square metres, which is the factor used here.
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