Convert Square millimetres per hour to Square inches per second
Convert Square millimetres per hour (mm²/h) to Square inches per second (in²/s) instantly and accurately.
Conversion Formula
in²/s = mm²/h × 4.305564167e-7
About Square millimetres per hour
The square millimetre per hour (mm²/h) equals 1/(3.6 × 10⁹) m²/s ≈ 2.78 × 10⁻¹⁰ m²/s. It appears in materials science for solid-state diffusion and thin-film growth studies where hourly timescales are more natural than seconds. 1 mm²/h = 1/3600 mm²/s = 1/3600 cSt.
About Square inches per second
The square inch per second (in²/s) equals 0.0254² = 6.4516 × 10⁻⁴ m²/s. It is the coherent FPS kinematic unit based on the inch, found in US fluid power, hydraulics, and bearing-design references. 1 in²/s = 645.16 cSt = 6.4516 St.
Quick Reference Table
| Square millimetres per hour (mm²/h) | Square inches per second (in²/s) |
|---|---|
| 1 mm²/h | 4.306 × 10-7 in²/s |
| 2 mm²/h | 8.611 × 10-7 in²/s |
| 5 mm²/h | 2.153 × 10-6 in²/s |
| 10 mm²/h | 4.306 × 10-6 in²/s |
| 25 mm²/h | 1.076 × 10-5 in²/s |
| 50 mm²/h | 2.153 × 10-5 in²/s |
| 100 mm²/h | 4.306 × 10-5 in²/s |