Convert Square millimetres per second to Square feet per minute
Convert Square millimetres per second (mm²/s) to Square feet per minute (ft²/min) instantly and accurately.
Conversion Formula
ft²/min = mm²/s × 0.000645834625
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 minute
The square foot per minute (ft²/min) equals ≈1.548 × 10⁻³ m²/s, an uncommon transitional unit appearing in some older US industrial furnace design charts and heat-treatment process sheets where holding times are expressed in minutes. 1 ft²/min = 60 ft²/h = 0.09290304/60 m²/s ≈1.548 × 10⁻³ m²/s.
Quick Reference Table
| Square millimetres per second (mm²/s) | Square feet per minute (ft²/min) |
|---|---|
| 1 mm²/s | 0.000645835 ft²/min |
| 2 mm²/s | 0.00129167 ft²/min |
| 5 mm²/s | 0.00322917 ft²/min |
| 10 mm²/s | 0.00645835 ft²/min |
| 25 mm²/s | 0.0161459 ft²/min |
| 50 mm²/s | 0.0322917 ft²/min |
| 100 mm²/s | 0.0645835 ft²/min |