Convert Square inches per second to Square feet per second
Convert Square inches per second (in²/s) to Square feet per second (ft²/s) instantly and accurately.
Conversion Formula
ft²/s = in²/s × 0.006944444444
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.
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 inches per second (in²/s) | Square feet per second (ft²/s) |
|---|---|
| 1 in²/s | 0.00694444 ft²/s |
| 2 in²/s | 0.0138889 ft²/s |
| 5 in²/s | 0.0347222 ft²/s |
| 10 in²/s | 0.0694444 ft²/s |
| 25 in²/s | 0.173611 ft²/s |
| 50 in²/s | 0.347222 ft²/s |
| 100 in²/s | 0.694444 ft²/s |