Instant, two-way conversion across common engineering units.
1 psi = 68.947573 mbar(Pounds per square inch → Millibar)
To convert pounds per square inch to millibar, multiply the value by 68.947573. Pressure conversions link structural loading, material strength grades and mechanical system ratings across metric and US practice.
Pounds per square inch (psi) is the pressure unit of US customary engineering.
The millibar (mbar) is one thousandth of a bar.
1 psi equals 68.947573 mbar.
Multiply the value by 68.947573. For example, 10 psi equals 689.47573 mbar.
1 mbar equals 0.014503774 psi. The converter above works in both directions, so you can type into either field.
One kilopascal equals one kilonewton per square meter, which is why imposed floor loads and wind pressures are stated in kPa or kN/m².
One megapascal equals one newton per square millimeter, which matches the millimeter cross-sections used in structural design, so C30/37 or S355 read directly as stress limits.
Yes. Every unit conversion runs in your browser, needs no account and is free for professional use.