Case 1
- Length in feet
- 12ft
- Width in feet
- 10ft
- Number of areas
- 1
120.00ft²
Open with these valuesSquare Footage Calculator
120.00ft²
Result: 120.00 ft²Length times width, both in feet: a room 12 ft by 10 ft is 120 square feet. Measuring several identical rectangles? Set the count and the calculator totals them. One square foot is exactly 0.09290304 m², so 120 ft² is 11.148 m².
The numbers at a glance
Held fixed: Length in feet 12.00 ft, Width in feet 10.00 ft.
| Number of areas | Result (ft²) |
|---|---|
| 1Your value | 120.00 |
| 1Your value | 144.00 |
| 1Your value | 168.00 |
| 2 | 192.00 |
| 2 | 216.00 |
| 2 | 240.00 |
Worked examples
Case 2
- Length in feet
- 10ft
- Width in feet
- 10ft
- Number of areas
- 2
200.00ft²
Open with these valuesCase 3
- Length in feet
- 2ft
- Width in feet
- 4ft
- Number of areas
- 4
32.00ft²
Open with these valuesHow it's calculated
ft² = length × width × number of areas
- StepMeasure the length and width in feet; inches divided by 12 give feet.
- StepSet the number of identical areas, or leave it at one.
- ResultRead the total in square feet — multiply by 0.09290304 for m².
Reference table
| Length, width, count | In square metres | Square feet |
|---|---|---|
| 1, 1, 1 | 0.092903 m² | 1 |
| 2, 4, 4 | 2.972897 m² | 32 |
| 12.5, 8, 1 | 9.290304 m² | 100 |
| 12, 10, 1 | 11.148365 m² | 120 |
| 10, 10, 2 | 18.580608 m² | 200 |
Questions
How do I calculate square footage?
Multiply the length by the width, both measured in feet. A room 12 ft by 10 ft is 12 × 10 = 120 square feet. If you are measuring several identical areas, multiply by how many there are.
Do length and width have to be in feet?
Yes — this calculator expects feet and returns square feet. If you measured in inches, divide by 12 first; if you measured in metres, multiply by 3.281 to get feet.
How do I convert square feet to square metres?
Multiply by 0.09290304, the exact factor, which is 0.3048 metres per foot squared. So 120 ft² is 11.148 m², and 1 ft² is 0.0929 m².
What about rooms that are not a simple rectangle?
Split the space into rectangles, work out each one and add them up. An L-shaped room is two rectangles. Leave the count at one and total the parts yourself.
How do I total several identical areas at once?
Use the number of areas field. Enter the length and width of one rectangle, then set the count — four identical 2 ft by 4 ft panels give 32 square feet in total.
Sources and last check
Information, not professional advice.