Millibar (mbar) to Pounds per square inch (psi) Conversion
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
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 (mbar) | Pounds per square inch (psi) |
|---|---|
| 0.1 mbar | 0.00145 psi |
| 1 mbar | 0.0145 psi |
| 2 mbar | 0.029 psi |
| 3 mbar | 0.0435 psi |
| 5 mbar | 0.0725 psi |
| 10 mbar | 0.145 psi |
| 20 mbar | 0.2901 psi |
| 30 mbar | 0.4351 psi |
| 50 mbar | 0.7252 psi |
| 100 mbar | 1.4504 psi |
| 1000 mbar | 14.5038 psi |
Frequently Asked Questions (FAQ)
How many pounds per square inch are in 1 millibar?
1 millibar (mbar) is exactly 0.014504 pounds per square inch (psi).
How do I convert millibar to pounds per square inch?
Multiply the value in millibar by 0.014504 to get the result in pounds per square inch. Or use the converter above — type any number and see the result instantly.