Millibar (mbar) to Bar (bar) 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.
Bar
The bar is a unit of pressure equal to exactly 100,000 pascals (100 kPa), accepted for use with the SI by the BIPM. It is close to one standard atmosphere (1 atm = 1.01325 bar) making it convenient for many practical applications. The bar is widely used in meteorology (weather maps), industrial gas and fluid systems, and tyre inflation in continental Europe. A typical car tyre is inflated to 2.2–2.5 bar; scuba diving tanks are filled to 200–300 bar.
| Millibar (mbar) | Bar (bar) |
|---|---|
| 0.1 mbar | 0.0001 bar |
| 1 mbar | 0.001 bar |
| 2 mbar | 0.002 bar |
| 3 mbar | 0.003 bar |
| 5 mbar | 0.005 bar |
| 10 mbar | 0.01 bar |
| 20 mbar | 0.02 bar |
| 30 mbar | 0.03 bar |
| 50 mbar | 0.05 bar |
| 100 mbar | 0.10 bar |
| 1000 mbar | 1.00 bar |
Frequently Asked Questions (FAQ)
How many bar are in 1 millibar?
1 millibar (mbar) is exactly 0.001 bar (bar).
How do I convert millibar to bar?
Multiply the value in millibar by 0.001 to get the result in bar. Or use the converter above — type any number and see the result instantly.