Area
Convert square foot (ft²) to square inch (in²). Area sets heat-transfer surface, flow cross-sections, and footprints, in m² or ft².
1 ft² = 144 in²
To convert square foot to square inch, multiply the ft² value by 144. To go the other way, divide by 144 (or multiply by 0.006944444).
| ft² | in² |
|---|---|
| 1 | 144 |
| 2 | 288 |
| 5 | 720 |
| 10 | 1440 |
| 25 | 3600 |
| 50 | 7200 |
| 100 | 14400 |
| 250 | 36000 |
| 500 | 72000 |
| 1000 | 144000 |
Exchanger surface is quoted in m² or ft²; orifice and nozzle areas in mm² or in².
Flow area scales with the square of diameter, so doubling a pipe's bore quadruples its area.
Worked example. A area of 107.6391 ft² is 15500.03 in².
Multiply the value in ft² by 144 to get in². For example, 10 ft² = 1440 in².
1 ft² equals 144 in².
Exchanger surface is quoted in m² or ft²; orifice and nozzle areas in mm² or in².