Pounds per square inch (psi) to Millibar (mbar) Conversion
Pounds per square inch
Pounds per square inch (psi) is a unit of pressure defined as one pound-force per square inch (approximately 6,894.76 Pa). It is the standard for tyre pressure, hydraulic systems, and gas cylinders in the United States. Standard atmospheric pressure is approximately 14.696 psi. In engineering, gauge pressure (psig — relative to atmosphere) is distinguished from absolute pressure (psia — relative to a perfect vacuum), a distinction critical in thermodynamics and fluid system design.
Millibar
The millibar (mbar) is a unit of pressure equal to one thousandth of a bar (100 Pa). It is the standard unit for atmospheric pressure in meteorology: standard atmospheric pressure is 1,013.25 mbar, and weather maps plot isobars (lines of equal pressure) in millibars or hectopascals (1 hPa = 1 mbar). The eye of a powerful hurricane can have a central pressure below 900 mbar, while high-pressure systems typically exceed 1,020 mbar.
| Pounds per square inch (psi) | Millibar (mbar) |
|---|---|
| 0.1 psi | 6.894757293168 mbar |
| 1 psi | 68.94757293168 mbar |
| 2 psi | 137.89514586336 mbar |
| 3 psi | 206.84271879504 mbar |
| 5 psi | 344.7378646584 mbar |
| 10 psi | 689.4757293168 mbar |
| 20 psi | 1378.9514586336 mbar |
| 30 psi | 2068.4271879504 mbar |
| 50 psi | 3447.378646584 mbar |
| 100 psi | 6894.757293168 mbar |
| 1000 psi | 68947.57293168 mbar |
Frequently Asked Questions (FAQ)
How many millibar are in 1 pounds per square inch?
1 pounds per square inch (psi) is exactly 68.948 millibar (mbar).
How do I convert pounds per square inch to millibar?
Multiply the value in pounds per square inch by 68.948 to get the result in millibar. Or use the converter above — type any number and see the result instantly.