Table Of Contents
Bars to millibar Conversion
1 bars (bar) is equal to 1000 millibar (mbar).
1 bar = 1000 mbar
or
1 mbar = 0.001 bar
Formula
To convert a pressure from bars (bar) to millibar (mbar), multiply the pressure in bars by 1000
p(mbar) = p(bar) × 1000
Examples:
Convert 2 bars to millibar:
p(mbar) = 2bar × 1000 = 2000 mbar
Conversion table
| 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 |
| 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 |
Frequently asked questions
How do I convert bars to millibar?
Multiply the value in bars by 1000 to get the result in millibar. For example, 5 bar × 1000 = 5000 mbar.
How many millibar are in 1 bars?
1 bars (bar) is equal to 1000 millibar (mbar).
How do I convert millibar back to bars?
Use the inverse operation: divide the value in millibar by 1000 to get the result in bars.
How accurate is the bars to millibar 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
