Pipe Reynolds number

Pipe Reynolds number with explicit inputs, units and reproducible calculations.

Inputs

• Fluid density (kg/m³)
• Mean velocity (m/s)
• Internal diameter (mm)
• Dynamic viscosity (mPa·s)

Assumptions and limitations

Newtonian fluid using supplied properties. Dynamic viscosity, not kinematic viscosity. No universal transition or friction-factor classification.

Source

Calculation source

Interactive calculators require JavaScript and the calculation service.