Millibar to Bar Converter
Convert Millibar (mbar) to Bar (bar) instantly. 1 mbar = 0.001 bar.
Pressure Converter
29 units available
1 mbar = 0.001 bar
Formula:
bar = mbar × 0.001With your value: 1 mbar = 0.001 bar
Other Millibar to Bar conversions
Millibar to Bar Conversion Table
| Millibar (mbar) | Bar (bar) |
|---|---|
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 15 | 0.015 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1000 | 1 |
Bar to Millibar Conversion Table
| Bar (bar) | Millibar (mbar) |
|---|---|
| 0.5 | 500 |
| 1 | 1,000 |
| 2 | 2,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 15 | 15,000 |
| 20 | 20,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
| 1000 | 1,000,000 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Millibar (mbar)
Pressure
Derived from the pascal (1 Pa = 1 N/m²). The standard atmosphere is exactly 101 325 Pa.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Bar (bar)
Pressure
1 bar = 100 000 Pa exactly.
Source: Units accepted for use with the SI, SI Brochure Table 8
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert Millibar to Bar
To convert from Millibar (mbar) to Bar (bar), multiply the value by 0.001.
Formula: bar = mbar × 0.001
Reverse: mbar = bar × 1,000
Step-by-Step Example
- Start with your value in Millibar. For example: 5 mbar
- Multiply by the conversion factor: 5 x 0.001
- The result is: 0.005 bar
About Millibar
The millibar (mbar) is a unit of pressure and stress. One millibar equals 100 pascals. UnitConvertLab converts it against every other pressure unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: pressure calculations, engineering and science, education.
About Bar
The bar is a metric unit of pressure equal to 100,000 Pascals, roughly equal to atmospheric pressure at sea level.
Common uses: tire pressure, industrial, meteorology.
Frequently Asked Questions
How many Bar are in 1 Millibar?
There are exactly 0.001 Bar in 1 Millibar. This means the conversion factor from Millibar to Bar is 0.001.
What is the formula to convert Millibar to Bar?
The formula to convert Millibar to Bar is: bar = mbar × 0.001. For example, to convert 10 Millibar to Bar, you would multiply 10 by 0.001.
What is a Millibar?
The millibar (mbar) is a unit of pressure and stress. One millibar equals 100 pascals. UnitConvertLab converts it against every other pressure unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What is a Bar?
The bar is a metric unit of pressure equal to 100,000 Pascals, roughly equal to atmospheric pressure at sea level.
What are the common uses of Millibar?
The Millibar is commonly used in pressure calculations, engineering and science, education.
Related Pressure Conversions
Cite this page
UnitConvertLab. (2026). Millibar to Bar converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/millibar-to-bar