Formula
mbar to bar conversion formula
Use this relationship for a direct conversion:
bar = mbar x 0.001
Worked example
2 mbar = 0.002 bar.
Conventional mercury-column units are not measurements adjusted for local temperature or gravity.
Pressure conversion
Convert Millibar to Bar
1 millibar (mbar) equals 0.001 bar (bar). Enter any value below to convert from mbar to bar.
Enter a value and choose units. Results update instantly.
1 mbar = 0.001 bar
All Pressure units
From 1 mbar| Unit | Value |
|---|---|
| Pascal Pa | 100 |
| Kilopascal kPa | 0.1 |
| Megapascal MPa | 0.0001 |
| Bar bar | 0.001 |
| Millibar mbar | 1 |
| Standard atmosphere atm | 0.0009869233 |
| Pound per square inch psi | 0.0145037738 |
| Torr Torr | 0.7500616827 |
| Millimeter of mercury mmHg | 0.7500615758 |
| Inch of mercury inHg | 0.0295299802 |
Recent conversions
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Quick reference
Millibar to Bar table
| Millibar (mbar) | Bar (bar) |
|---|---|
| 0.01 | 0.00001 |
| 0.1 | 0.0001 |
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 1,000 | 1 |
From unit
About the millibar
Exactly 100 pascals.
Symbol: mbar
To unit
About the bar
Exactly 100,000 pascals.
Symbol: bar
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Related conversions
Source
Conversion standard
Definitions are checked against NIST SP 811: Pressure units. Calculations use full internal precision before display rounding.
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mbar to bar FAQ
How do you convert millibar to bar?
Use the formula bar = mbar x 0.001. 1 millibar (mbar) equals 0.001 bar (bar).
Is the mbar to bar conversion exact?
Both unit definitions use exact factors. Only the displayed decimal may be rounded.