Convert Square feet per minute to Square millimetres per second
Convert Square feet per minute (ft²/min) to Square millimetres per second (mm²/s) instantly and accurately.
Conversion Formula
mm²/s = ft²/min × 1548.384
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.
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.
Quick Reference Table
| Square feet per minute (ft²/min) | Square millimetres per second (mm²/s) |
|---|---|
| 1 ft²/min | 1548.38 mm²/s |
| 2 ft²/min | 3096.77 mm²/s |
| 5 ft²/min | 7741.92 mm²/s |
| 10 ft²/min | 15483.8 mm²/s |
| 25 ft²/min | 38709.6 mm²/s |
| 50 ft²/min | 77419.2 mm²/s |
| 100 ft²/min | 154838 mm²/s |