Convert Square millimetres per second to Square feet per second
Convert Square millimetres per second (mm²/s) to Square feet per second (ft²/s) instantly and accurately.
Conversion Formula
ft²/s = mm²/s × 1.076391042e-5
About Square millimetres per second
The square millimetre per second (mm²/s) equals 1 × 10⁻⁶ m²/s and is the standard unit in materials engineering and the laser-flash diffusivity method (ASTM E1461, ISO 22007-4). Metals span roughly 2-180 mm²/s; polymers 0.07-0.2 mm²/s; ceramics 0.3-10 mm²/s. Numerically identical to the kinematic viscosity unit (cSt) in SI context. 1 mm²/s = 1 × 10⁻⁶ m²/s.
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 millimetres per second (mm²/s) | Square feet per second (ft²/s) |
|---|---|
| 1 mm²/s | 1.076 × 10-5 ft²/s |
| 2 mm²/s | 2.153 × 10-5 ft²/s |
| 5 mm²/s | 5.382 × 10-5 ft²/s |
| 10 mm²/s | 0.000107639 ft²/s |
| 25 mm²/s | 0.000269098 ft²/s |
| 50 mm²/s | 0.000538196 ft²/s |
| 100 mm²/s | 0.00107639 ft²/s |