Bars to Millibars (bar → mbar)
Formula
1 bar = 1000 mbarConversion Table
| bar | mbar |
|---|---|
| 0 | 0 |
| 1.0000 | 1,000.0 |
| 2.0000 | 2,000.0 |
| 3.0000 | 3,000.0 |
| 4.0000 | 4,000.0 |
| 5.0000 | 5,000.0 |
| 6.0000 | 6,000.0 |
| 7.0000 | 7,000.0 |
| 8.0000 | 8,000.0 |
| 9.0000 | 9,000.0 |
| 10.000 | 10,000 |
| 11.000 | 11,000 |
| 12.000 | 12,000 |
| 13.000 | 13,000 |
| 14.000 | 14,000 |
| 15.000 | 15,000 |
| 16.000 | 16,000 |
| 17.000 | 17,000 |
| 18.000 | 18,000 |
| 19.000 | 19,000 |
| bar | mbar |
|---|---|
| 20.000 | 20,000 |
| 21.000 | 21,000 |
| 22.000 | 22,000 |
| 23.000 | 23,000 |
| 24.000 | 24,000 |
| 25.000 | 25,000 |
| 26.000 | 26,000 |
| 27.000 | 27,000 |
| 28.000 | 28,000 |
| 29.000 | 29,000 |
| 30.000 | 30,000 |
| 31.000 | 31,000 |
| 32.000 | 32,000 |
| 33.000 | 33,000 |
| 34.000 | 34,000 |
| 35.000 | 35,000 |
| 36.000 | 36,000 |
| 37.000 | 37,000 |
| 38.000 | 38,000 |
| 39.000 | 39,000 |
| bar | mbar |
|---|---|
| 40.000 | 40,000 |
| 41.000 | 41,000 |
| 42.000 | 42,000 |
| 43.000 | 43,000 |
| 44.000 | 44,000 |
| 45.000 | 45,000 |
| 46.000 | 46,000 |
| 47.000 | 47,000 |
| 48.000 | 48,000 |
| 49.000 | 49,000 |
| 50.000 | 50,000 |
| 51.000 | 51,000 |
| 52.000 | 52,000 |
| 53.000 | 53,000 |
| 54.000 | 54,000 |
| 55.000 | 55,000 |
| 56.000 | 56,000 |
| 57.000 | 57,000 |
| 58.000 | 58,000 |
| 59.000 | 59,000 |
| bar | mbar |
|---|---|
| 60.000 | 60,000 |
| 61.000 | 61,000 |
| 62.000 | 62,000 |
| 63.000 | 63,000 |
| 64.000 | 64,000 |
| 65.000 | 65,000 |
| 66.000 | 66,000 |
| 67.000 | 67,000 |
| 68.000 | 68,000 |
| 69.000 | 69,000 |
| 70.000 | 70,000 |
| 71.000 | 71,000 |
| 72.000 | 72,000 |
| 73.000 | 73,000 |
| 74.000 | 74,000 |
| 75.000 | 75,000 |
| 76.000 | 76,000 |
| 77.000 | 77,000 |
| 78.000 | 78,000 |
| 79.000 | 79,000 |
Bars to Millibars Conversion
Converting Bars (bar) to Millibars (mbar) is a common pressure conversion. 1 bar equals 1,000 mbar. For example, 100 bar is equal to 100,000 mbar.
Quick Mental Math: Bars to Millibars
Pressure units (atm, bar, psi, pascal) are diverse; use atmospheres as a reference tier.
Why is converting Bars to Millibars tricky?
Magnitude or direction confusion between bars and millibars is the primary error source.
Quick Reference Values
1 bar = 1,000 mbar. 5 bar = 5,000 mbar. 10 bar = 10,000 mbar. 25 bar = 25,000 mbar. 50 bar = 50,000 mbar. 100 bar = 100,000 mbar.
What is Bars?
Bars (bar) is a unit of pressure. The bar is a unit of pressure equal to exactly 100,000 pascals (Pa). It is used to measure pressure or stress and is slightly less than the standard atmospheric pressure of 101,325 Pa. The bar is not an SI unit but is accepted for use with SI by the BIPM due to its convenience in many engineering fields [bipm-si-brochure]. The bar was introduced by the Norwegian meteorologist Vilhelm Bjerknes in 1909 to simplify atmospheric pressure measurements. It gained wider recognition in the mid-20th century and was formally accepted for use with the SI by the BIPM to provide a practical unit for pressure [bipm-si-brochure]. The bar is widely used in meteorology, engineering, and automotive industries worldwide, especially in Europe and Asia. It remains common in barometric pressure readings and tire pressure specifications, although the pascal is the SI base unit [bipm-si-brochure].
What is Millibars?
Millibars (mbar) is a unit of pressure. The millibar is a unit of pressure equal to 100 pascals or 0.1 kilopascals. It is one-thousandth of a bar, which is defined as exactly 100,000 pascals in the International System of Units (SI). The millibar is commonly used in meteorology to measure atmospheric pressure and is recognized under ISO standards for pressure units [iso-80000]. The bar and its subunit, the millibar, were introduced by the German meteorologist Heinrich von Helmholtz in the early 20th century. The millibar was adopted as a practical unit for meteorological pressure measurements before SI units were formalized [nist-sp-811]. Millibars remain widely used in weather reports and aviation worldwide, especially in countries like the United States, United Kingdom, and Australia. Meteorological agencies, including NOAA and the UK Met Office, use millibars alongside pascals for atmospheric pressure [nist-sp-811].
Common Misspellings
People often search for this conversion using these alternate spellings: barres, barre, bars pressure, milibars, milibars, millibar, milibar. All of these refer to the Bars to Millibars conversion.