Table Of Contents
Millibar to bars Conversion
1 millibar (mbar) is equal to 0.001 bars (bar).
1 mbar = 0.001 bar
or
1 bar = 1000 mbar
Formula
To convert a pressure from millibar (mbar) to bars (bar), divide the pressure in millibar by 1000
p(bar) = p(mbar) / 1000
Examples:
Convert 10 millibar to bars:
p(bar) = 10mbar / 1000 = 0.01 bar
Conversion table
| Millibar (mbar) | Bars (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 |
| 25 mbar | 0.025 bar |
| 50 mbar | 0.05 bar |
| 100 mbar | 0.1 bar |
| 250 mbar | 0.25 bar |
| 500 mbar | 0.5 bar |
| 1000 mbar | 1 bar |
| Bars (bar) | Millibar (mbar) |
|---|---|
| 1 bar | 1000 mbar |
| 2 bar | 2000 mbar |
| 3 bar | 3000 mbar |
| 5 bar | 5000 mbar |
| 10 bar | 10000 mbar |
| 20 bar | 20000 mbar |
| 25 bar | 25000 mbar |
| 50 bar | 50000 mbar |
| 100 bar | 100000 mbar |
| 250 bar | 250000 mbar |
| 500 bar | 500000 mbar |
| 1000 bar | 1000000 mbar |
Frequently asked questions
How do I convert millibar to bars?
Divide the value in millibar by 1000 to get the result in bars. For example, 5 mbar ÷ 1000 = 0.005 bar.
How many bars are in 1 millibar?
1 millibar (mbar) is equal to 0.001 bars (bar).
How do I convert bars back to millibar?
Use the inverse operation: multiply the value in bars by 1000 to get the result in millibar.
How accurate is the millibar to bars conversion?
The converter multiplies by the conversion factor 1000 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
- BIPM — The International System of Units (SI Brochure, 9th edition)
- ISO 80000-4:2019 — Quantities and units — Part 4: Mechanics
- NIST Guide to the SI, Appendix B.8: Factors for Units Listed Alphabetically (NIST SP 811, 2008 edition)
- Resolution 4 of the 10th CGPM (1954): Definition of the standard atmosphere
