Calculating Square Footage: Formula and Room Examples
Learn how to calculate square footage for rooms, flooring, paint estimates, and real estate using simple length and width formulas.
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Searching calculating square footage usually means you want the area of a room, wall, floor, or property surface.
Square Footage Formula
Square feet = Length x Width
This works for rectangles and squares.
Example
A room that is 12 feet by 15 feet has:
12 x 15 = 180 square feet
Irregular Spaces
If the space is not a rectangle:
- Break it into smaller rectangles or triangles.
- Calculate each part separately.
- Add the areas together.
Why Square Footage Matters
- Flooring estimates
- Paint coverage
- Rent and real estate
- Renovation planning
- Material costs
The Bottom Line
To calculate square footage, multiply length by width in feet. For irregular spaces, split the area into simple shapes and add the results.
How to Calculate: Step-by-Step Guide
1
Measure length and width
Use the room or surface dimensions in feet.
2
Multiply the dimensions
For rectangles, multiply length by width.
3
Add sections if needed
Break irregular spaces into simple shapes and sum the areas.
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