Convert Square feet per second to Square inches per second
Convert Square feet per second (ft²/s) to Square inches per second (in²/s) instantly and accurately.
Conversion Formula
in²/s = ft²/s × 144
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.
About Square inches per second
The square inch per second (in²/s) equals 0.0254² = 6.4516 × 10⁻⁴ m²/s. It is the coherent FPS kinematic unit based on the inch, found in US fluid power, hydraulics, and bearing-design references. 1 in²/s = 645.16 cSt = 6.4516 St.
Quick Reference Table
| Square feet per second (ft²/s) | Square inches per second (in²/s) |
|---|---|
| 1 ft²/s | 144 in²/s |
| 2 ft²/s | 288 in²/s |
| 5 ft²/s | 720 in²/s |
| 10 ft²/s | 1440 in²/s |
| 25 ft²/s | 3600 in²/s |
| 50 ft²/s | 7200 in²/s |
| 100 ft²/s | 14400 in²/s |