Square Footage Calculator
Calculate square footage, square yards, and square metres based on length and width.
Calculate area
Enter the length and width of a rectangular space to estimate total area in multiple units.
120.00 sq ft
Based on a length of 12 ft and a width of 10 ft.
How to use this calculator
Enter the length and width in feet. The calculator multiplies both values to get square footage, then converts the result into square yards and square metres.
Tips for success
- This tool works best for rectangular areas. Break irregular spaces into smaller rectangles and add the totals together.
- Square footage is useful for flooring, drywall, paint, and renovation planning.
- Square yards are often useful for carpet and some landscaping materials.
- Square metres are useful when comparing metric measurements.
- Useful for rooms, floors, walls, garages, patios, sheds, and many common household or renovation measurements.
Common mistakes
- Mixing feet with inches without converting first.
- Forgetting to break irregular spaces into smaller sections.
- Using room measurements that include closets or cutouts unintentionally.
- Rounding too early before adding multiple areas together.
- Assuming square yards and square feet are interchangeable.
FAQ
How do I calculate square footage?
Multiply length by width when both measurements are in feet.
How many square feet are in a square yard?
One square yard equals 9 square feet.
Can I use this for walls?
Yes. As long as the wall is roughly rectangular, this tool works well.
Can I use this for flooring?
Yes. This is one of the most common uses for a square footage calculator.
What if the room is not rectangular?
Break the area into smaller rectangles, calculate each one separately, and then add the totals together.