Area
Convert square inch (in²) to square millimetre (mm²). Area sets heat-transfer surface, flow cross-sections, and footprints, in m² or ft².
1 in² = 645.16 mm²
To convert square inch to square millimetre, multiply the in² value by 645.16. To go the other way, divide by 645.16 (or multiply by 0.001550003).
| in² | mm² |
|---|---|
| 1 | 645.16 |
| 2 | 1290.32 |
| 5 | 3225.8 |
| 10 | 6451.6 |
| 25 | 16129 |
| 50 | 32258 |
| 100 | 64516 |
| 250 | 161290 |
| 500 | 322580 |
| 1000 | 645160 |
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 15500.03 in² is 1e+7 mm².
Multiply the value in in² by 645.16 to get mm². For example, 10 in² = 6451.6 mm².
1 in² equals 645.16 mm².
Exchanger surface is quoted in m² or ft²; orifice and nozzle areas in mm² or in².