Convert Square inches per second to Square feet per second
Convert Square inches per second (in²/s) to Square feet per second (ft²/s) instantly and accurately.
Conversion Formula
ft²/s = in²/s × 0.006944444444
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 feet per second
The square foot per second (ft²/s) equals 0.09290304 m²/s, the imperial base unit for thermal diffusivity analogous to m²/s. It is used in US aerospace engineering and combustion research for highly conductive materials and high-temperature plasmas. Diamond, the most thermally diffusive solid at ≈7 cm²/s, converts to ≈0.0075 ft²/s; silver to ≈0.00167 ft²/s. 1 ft²/s = 3600 ft²/h = 0.09290304 m²/s.
Quick Reference Table
| Square inches per second (in²/s) | Square feet per second (ft²/s) |
|---|---|
| 1 in²/s | 0.00694444 ft²/s |
| 2 in²/s | 0.0138889 ft²/s |
| 5 in²/s | 0.0347222 ft²/s |
| 10 in²/s | 0.0694444 ft²/s |
| 25 in²/s | 0.173611 ft²/s |
| 50 in²/s | 0.347222 ft²/s |
| 100 in²/s | 0.694444 ft²/s |