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 10⁻⁶ m²/s, numerically identical to 1 centistoke (cSt). It is the preferred SI-consistent expression: ISO 3104, DIN 51562, and ASTM viscosity standards all use mm²/s interchangeably with cSt. Water at 20 °C ≈ 1.004 mm²/s; SAE 10W-30 at 100 °C: 9.3-12.5 mm²/s. 1 mm²/s = 1 cSt.
About Square feet per second
The square foot per second (ft²/s) equals 0.3048² = 0.09290304 m²/s. It is the coherent FPS kinematic viscosity unit, used in US aerospace, hydraulic machinery, and civil/coastal engineering. Water at 20 °C ≈ 1.082 × 10⁻⁵ ft²/s; air at 20 °C ≈ 1.632 × 10⁻⁴ ft²/s. 1 ft²/s ≈ 92903 cSt.
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 |