Convert millibars to bars
1 mbar = 0.001 bar — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.001bar
As a fraction: 1/1000
1 mbar = 0.001 bar
How to convert millibars to bars
Multiply the number of millibars by 0.001 to get bars.
The exact factor is 0.001 — as a fraction, 1/1000.
Millibar: Identical to the hectopascal used on modern weather charts.
Bar: Exactly 100 kPa. Close to atmospheric pressure, which is why it caught on.
Millibar to Bar conversion table
| Millibars (mbar) | Bars (bar) |
|---|---|
| 1 mbar | 0.001 |
| 2 mbar | 0.002 |
| 3 mbar | 0.003 |
| 5 mbar | 0.005 |
| 10 mbar | 0.01 |
| 20 mbar | 0.02 |
| 25 mbar | 0.025 |
| 50 mbar | 0.05 |
| 100 mbar | 0.1 |
| 250 mbar | 0.25 |
| 500 mbar | 0.5 |
| 1000 mbar | 1 |
Bar to Millibar conversion table
| Bars (bar) | Millibars (mbar) |
|---|---|
| 1 bar | 1000 |
| 2 bar | 2000 |
| 3 bar | 3000 |
| 5 bar | 5000 |
| 10 bar | 10 000 |
| 20 bar | 20 000 |
| 25 bar | 25 000 |
| 50 bar | 50 000 |
| 100 bar | 100 000 |
| 250 bar | 250 000 |
| 500 bar | 500 000 |
| 1000 bar | 1 000 000 |
Frequently asked
How many bars are in a millibar?
One millibar equals 0.001 bars (mbar → bar). That figure is exact, not rounded.
How do you convert millibars to bars?
Multiply the number of millibars by 0.001 to get bars.
What is 1 bar in millibars?
One bar is 1000 millibars.
What is 10 mbar in bar?
10 mbar = 0.01 bar.
What exactly is a millibar?
Identical to the hectopascal used on modern weather charts.
What exactly is a bar?
Exactly 100 kPa. Close to atmospheric pressure, which is why it caught on.