ft²/s
square foot per second
Diffusivityexact by definition
The square foot per second is exactly 0.09290304 m²/s. It is the American engineering unit of kinematic viscosity and of eddy diffusivity: water at room temperature is about 1.1 × 10⁻⁵ ft²/s, which is the number that goes into a Reynolds number worked entirely in feet and seconds.
| 1 ft²/s | 92,903.04 mm²/s |
Solvers that use diffusivity