Bar to millibar
Type a value in bar to see it in millibar straight away, or type in the second box to convert back.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the bar box.
- Read the result in millibar as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
mbar = bar × 1,000
Multiply the value in bar by 1,000 to get millibar.
Example
To convert 25 bar to millibar: 25 × 1,000 = 25,000 mbar.
Conversion table
| Bar (bar) | Millibar (mbar) |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 20 | 20,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
| 1,000 | 1,000,000 |
About the units
- Bar
- A metric unit equal to exactly 100,000 pascals, close to atmospheric pressure at sea level.
- Millibar
- One thousandth of a bar, exactly 100 pascals, the same as one hectopascal.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many millibar are in one bar?
1 bar = 1,000 mbar exactly.
How do I convert bar to millibar?
Use mbar = bar × 1,000. For example, 25 bar = 25,000 mbar.
How many bar are in one millibar?
1 mbar = 0.001 bar.
What is the difference between gauge and absolute pressure?
Gauge pressure is measured from the surrounding air pressure, while absolute pressure starts from a perfect vacuum. These converters change the unit only, so a gauge reading stays a gauge reading.
Are torr and mmHg the same?
Almost. One torr is 101325/760 Pa, about 133.322368 Pa, and one conventional mmHg is 133.322387 Pa, a difference of less than one part per million. For everyday use you can treat them as equal.