Colebrook White Equation Calculator


This calculator calculates the pipeline flow rate by using colebrook white equation method.

Formula Used

Colebrook White Equation

Colebrook White Equation

Where :

  1. V – Mean flow velocity,
  2. S – hydraulic gradient,
  3. v – kinematic viscosity of water,
  4. d – Internal diameter,
  5. k – Roughness coefficient,
  6. g = 9.81 m/s2,

Flow rate is calculated by multiplying mean velocity by area of section.

Note : While using below calculator, enter values as per units mentioned against individual input fields.