Convert Pounds per Square Inch (psi) to Millibar (mbar)

Enter a value below to convert Pounds per Square Inch (psi) to Millibar (mbar).

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Conversion:

1 Pounds per Square Inch (psi) = 68.9476 Millibar (mbar)

How to Convert Pounds per Square Inch (psi) to Millibar (mbar)

1 psi = 68.9476 mbar

1 mbar = 0.014503768079 psi

Example: convert 15 Pounds per Square Inch (psi) to Millibar (mbar):

25 psi = 1723.69 mbar

Pounds per Square Inch (psi) to Millibar (mbar) Conversion Table

Pounds per Square Inch (psi)Millibar (mbar)
0.01 psi0.689476 mbar
0.1 psi6.89476 mbar
1 psi68.9476 mbar
2 psi137.8952 mbar
3 psi206.8428 mbar
5 psi344.738 mbar
10 psi689.476 mbar
20 psi1378.952 mbar
50 psi3447.38 mbar
100 psi6894.76 mbar
1000 psi68947.6 mbar

Pounds per Square Inch (psi)

Definition

Pounds per square inch (psi) is an imperial unit of pressure equal to the force of one pound-force applied to an area of one square inch. It equals approximately 6,894.76 pascals.

History

PSI evolved from the British imperial system and became the dominant pressure unit in American and British engineering. It gained widespread use with the industrialization of pneumatic and hydraulic systems.

Current use

PSI is the primary pressure unit in the United States for tire pressure, water pressure, hydraulic systems, compressed gas cylinders, and HVAC systems. It is also widely used in oil and gas industries.

Millibar (mbar)

Definition

A millibar (mbar) is a unit of pressure equal to one thousandth of a bar, or 100 pascals. It is equivalent to one hectopascal (hPa).

History

The millibar was widely adopted in meteorology in the early 20th century for measuring atmospheric pressure. Many weather services have since transitioned to the equivalent hectopascal (hPa), though millibar remains in common use.

Current use

Millibars are used in meteorology for atmospheric pressure readings, aviation altimeter settings, and weather maps. Many weather forecasts and barometers still display pressure in millibars.