Fluids, hydraulics and flows
Reynolds number
Calculates Reynolds number from density, velocity, diameter, and dynamic viscosity.
Related calculators
Pipe flow velocity
Calculates average pipe velocity from flow rate and pipe diameter.
Dynamic pressure
Calculates dynamic pressure from fluid density and flow velocity.
Mach number
Calculates Mach number as the ratio of flow velocity to speed of sound.
Froude number
Calculates Froude number from velocity, gravity, and characteristic length.
Laminar-flow friction factor
Calculates the Darcy friction factor for laminar flow in a circular pipe.
Swamee-Jain friction factor
Calculates an approximate Darcy friction factor for turbulent pipe flow.