Square Footage Calculator

Square footage measures area in square feet, commonly used in the US and UK for real estate and construction. Converting between square feet, square metres, and square yards is essential when comparing international property listings or ordering materials

The calculator uses the standard published formula for square footage. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches, watts. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: 1 square foot = 0.0929 square metres. Each step in the calculation is shown so you can verify the result manually.