Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Venturi Meter Flow Calculator

Determine the volumetric flow rate of a fluid passing through a venturi meter. Use this when designing pipelines or calibrating flow measurement devices in industrial systems.

Throat Diameter (m)

Pressure Difference (Pa)

Fluid Density (kg/m³)

Discharge Coefficient

Fill in the required fields to see your result.

Chemical Engineering

Pipe Pressure Drop Calculator

Compute the friction term f·(L/D)·(v²/2) from the Darcy-Weisbach equation — the specific energy loss per unit mass of fluid flowing through a straight pipe. Multiply by fluid density to get pressure drop in Pa, or divide by g for head loss in metres.

Friction Factor

Pipe Length (m)

Pipe Diameter (m)

Fluid Velocity (m/s)

Fill in the required fields to see your result.

Key differences

	Venturi Meter Flow Calculator	Pipe Pressure Drop Calculator
Category	Fluid Mechanics	Chemical Engineering
Inputs required	4	4
Result	Flow Rate (m³/s)	Pressure Drop (m)
What it does	Determine the volumetric flow rate of a fluid passing through a venturi meter. Use this when designing pipelines or calibrating flow measurement devices in industrial systems.	Compute the friction term f·(L/D)·(v²/2) from the Darcy-Weisbach equation — the specific energy loss per unit mass of fluid flowing through a straight pipe. Multiply by fluid density to get pressure drop in Pa, or divide by g for head loss in metres.