Compare calculators

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

PSI to Bar Converter

Convert pressure between pounds per square inch (PSI) and bar in both directions. General-purpose converter — for a tire-specific version see /automotive/tire-pressure/.

Direction

Pressure

Fill in the required fields to see your result.

Engineering

Pipe Pressure Drop Calculator

Calculate frictional pressure drop in a pipe using the Darcy-Weisbach equation, given friction factor, length, diameter, and fluid velocity. Use it for pump sizing, HVAC duct design, and fluid distribution system layout.

Friction Factor

Pipe Length (m)

Pipe Diameter (m)

Flow Velocity (m/s)

Fluid Density (kg/m³)

Fill in the required fields to see your result.

Key differences

	PSI to Bar Converter	Pipe Pressure Drop Calculator
Category	Automotive	Engineering
Inputs required	2	5
Result	Pressure	Pressure Drop (Pa)
What it does	Convert pressure between pounds per square inch (PSI) and bar in both directions. General-purpose converter — for a tire-specific version see /automotive/tire-pressure/.	Calculate frictional pressure drop in a pipe using the Darcy-Weisbach equation, given friction factor, length, diameter, and fluid velocity. Use it for pump sizing, HVAC duct design, and fluid distribution system layout.