Convert Square inches per second to Square millimetres per hour
Convert Square inches per second (in²/s) to Square millimetres per hour (mm²/h) instantly and accurately.
Conversion Formula
mm²/h = in²/s × 2322576
About Square inches per second
The square inch per second (in²/s) equals 6.4516 × 10⁻⁴ m²/s, used in high-speed thermal analyses such as ballistic impact heating, explosive detonation studies, and rapid induction heating of steel billets. Values for high-conductivity copper alloys reach ≈1-2 in²/s; for mild steel ≈0.3 in²/s. 1 in²/s = 0.00064516 m²/s = 3600 in²/h.
About Square millimetres per hour
The square millimetre per hour (mm²/h) equals 1/3 600 000 000 m²/s, the smallest practical thermal diffusivity unit. It is used in very slow heat-transfer processes such as diffusion through frozen soils or phase-change materials studied over many hours. Heavy clay soils can show diffusivity values of 1-2 mm²/h. 1 mm²/h = 1e-6/3600 m²/s.
Quick Reference Table
| Square inches per second (in²/s) | Square millimetres per hour (mm²/h) |
|---|---|
| 1 in²/s | 2322580 mm²/h |
| 2 in²/s | 4645150 mm²/h |
| 5 in²/s | 11612900 mm²/h |
| 10 in²/s | 23225800 mm²/h |
| 25 in²/s | 58064400 mm²/h |
| 50 in²/s | 116129000 mm²/h |
| 100 in²/s | 232258000 mm²/h |