CALCULATOR · FREE免费 · Free
Square Footage Calculator
Enter length and width to get square feet and square meters for rectangular rooms, walls and lots.
--Area · sq ft
--Area · sq m
Estimates only; verify on site before ordering or building.
Example
| Item | Value | Unit |
|---|---|---|
| Length | 10 | ft |
| Width | 12 | ft |
| Area | 120 | sq ft |
| Area | 11.15 | sq m |
Where people go wrong
- Using outside dimensions instead of the usable inside dimensions.
- Mixing inches and feet in the same measurement.
- Treating sloped or curved areas as rectangles overstates the area.
FAQ
How do I convert square feet to square meters?
Multiply by 0.092903. For example, 100 sq ft is about 9.29 sq m.
How do I measure an irregular room?
Split it into rectangles, add their areas, and approximate curves as rectangles.