Water Tooler

Water Flow Calculator

Calculate water flow rate through pipes and channels based on diameter, velocity, and cross-sectional area

Input Parameters

Calculation Method

Velocity (m/s)

Cross-sectional Area (m²)

Pipe Diameter (mm)

Velocity (m/s)

Pipe Diameter (mm)

Pressure Drop (kPa)

Pipe Length (m)

Pipe Roughness (mm)

Enter values and click "Calculate Flow Rate" to see results.

Velocity & Area Method: Enter the water velocity and cross-sectional area of the pipe or channel.
Diameter & Velocity Method: Enter the pipe diameter and water velocity. The area will be calculated automatically.
Pressure Drop Method: Calculate flow rate based on pressure drop, pipe diameter, length, and roughness using the Darcy-Weisbach equation.

Formula: Q = A × v
Where:
Q = Flow rate (m³/s)
A = Cross-sectional area (m²)
v = Velocity (m/s)