How to Calculate Square Feet

Overview

Square feet (sq ft) is a unit of area commonly used in the United States. It’s useful for measuring the size of rooms, houses, or any rectangular surface.

Formula

Square Feet = Length (in feet) × Width (in feet)

Example

If your room is 12 feet by 10 feet:

Calculator

FAQ

1. What if my space is not a perfect rectangle?

You can break it down into smaller rectangular sections, calculate each area in square feet, and then sum those areas.

2. How can I convert square feet to square meters?

1 square foot ≈ 0.0929 square meters. Multiply your square feet result by 0.0929 for a rough conversion.

3. Related calculators?

If you need to find an average dimension or percentage difference, check out our Average or Percentage calculators.