PSI to Millibar Converter (psi to mbar)

How to Convert PSI to Millibar

Formula: Millibar = PSI × 68.9476

Example: 1 psi = 68.9476 mbar

You can also use the interactive converter above. Simply enter any PSI value and the equivalent Millibar value will appear instantly. Click the ⇄ button to reverse the conversion.

Beyond the calculator above, it helps to understand what these two units actually represent and where you will run into them in everyday life.

Step-by-step example — Convert 30 psi to mbar:

What is PSI and Millibar?

PSI (pounds per square inch) is the imperial pressure unit used throughout the US for everyday pressure measurement.

A Millibar (mbar) equals one-thousandth of a bar and is the standard unit for weather pressure reports.

Real World Uses of PSI to Millibar Conversion

• PSI: Commonly used for stating car and bicycle tire pressure in the US.
• Millibar: Commonly used for tracking storm and hurricane intensity.
• PSI: Commonly used in the US for car and bicycle tyre pressure.
• Millibar: Commonly used on ship and aircraft barometers for tracking storm systems.

Frequently Asked Questions

What is the formula to convert PSI to Millibar?

The formula is: Millibar = PSI x 68.9476. Multiply any PSI value by 68.9476 to get the equivalent in Millibar.

What is 1 PSI in Millibar?

1 psi = 68.9476 mbar.

How many PSI are in 1 Millibar?

1 mbar = 0.0145037680789469 psi.

Is PSI bigger or smaller than Millibar?

PSI is bigger than Millibar. 1 PSI = 68.9476 mbar.

What is 50 psi in mbar?

50 psi = 3,447.38 mbar.

What is 1013 mbar in psi?

1013 mbar = 14.69231706 psi.

Why does the US use PSI instead of bar?

PSI (pounds per square inch) fits the imperial system already used in the US for weight and length, so it became the standard pressure unit for American cars, tools and equipment.