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Bernoulli Equation Calculator

Solve Bernoulli's equation to find downstream pressure in a flowing fluid given upstream conditions, elevation change, and system losses. Used in pipe system analysis, nozzle design, and pump selection.

Initial Velocity (m/s)

Initial Pressure (Pa)

Initial Elevation (m)

Final Elevation (m)

Fluid Density (kg/m³)

System Losses

Fill in the required fields to see your result.

Fluid Mechanics

Hazen-Williams Flow Rate Calculator

Calculate water flow rate in pressurised pipes using the Hazen-Williams equation given pipe diameter, hydraulic gradient, and C factor. Widely used by civil engineers for water main and irrigation system design.

Pipe Diameter (m)

Hydraulic Gradient (m/m)

Hazen-Williams C Factor

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Key differences

	Bernoulli Equation Calculator	Hazen-Williams Flow Rate Calculator
Category	Fluid Mechanics	Fluid Mechanics
Inputs required	6	3
Result	Final Pressure (Pa)	Flow Rate (m³/s)
What it does	Solve Bernoulli's equation to find downstream pressure in a flowing fluid given upstream conditions, elevation change, and system losses. Used in pipe system analysis, nozzle design, and pump selection.	Calculate water flow rate in pressurised pipes using the Hazen-Williams equation given pipe diameter, hydraulic gradient, and C factor. Widely used by civil engineers for water main and irrigation system design.