Square Foot per Second (ft²/s)
The square foot per second (ft²/s) is the US kinematic viscosity unit, exactly 0.09290304 m²/s. Water at 68 °F is about 1.08 × 10⁻⁵ ft²/s.
Symbol: ft²/s (ASCII: ft2/s)
Quantity: kinematic viscosity (dynamic viscosity divided by density)
SI relation: 1 ft²/s = 0.09290304 m²/s (exact)
Derivation: 1 ft²/s = 0.09290304 m²/s (exact)
Exact: yes, by definition
Typical uses
- US hydraulics and pipe-flow calculations
- Reynolds number in US units (Re = VD/ν)
Convert square feet per second to other units
| Conversion | 1 ft²/s equals | Reverse |
|---|---|---|
| square foot per second to centistokes | 92903.04 cSt | centistokes to square foot per second |
| square foot per second to square meter per second | 0.09290304 m²/s | square meter per second to square foot per second |
| square foot per second to square millimeter per second | 92903.04 mm²/s | square millimeter per second to square foot per second |
| square foot per second to stokes | 929.0304 St | stokes to square foot per second |
| square foot per second to square centimeter per second | 929.0304 cm²/s | square centimeter per second to square foot per second |
Open the Kinematic Viscosity Converter to convert any value between all units.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "square foot per second (ft²/s)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Square Foot per Second (ft²/s). Retrieved October 17, 2026, from https://scientificconverters.com/units/square-foot-per-second/
IEEE
Scientific Converters, "Square Foot per Second (ft²/s)," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/units/square-foot-per-second/