Millibars to Atmospheres (mbar → atm)
Formula
1 mbar = 0.0009869232667160128 atmConversion Table
| mbar | atm |
|---|---|
| 0 | 0 |
| 1.0000 | 0.00098692 |
| 2.0000 | 0.0019738 |
| 3.0000 | 0.0029608 |
| 4.0000 | 0.0039477 |
| 5.0000 | 0.0049346 |
| 6.0000 | 0.0059215 |
| 7.0000 | 0.0069085 |
| 8.0000 | 0.0078954 |
| 9.0000 | 0.0088823 |
| 10.000 | 0.0098692 |
| 11.000 | 0.010856 |
| 12.000 | 0.011843 |
| 13.000 | 0.012830 |
| 14.000 | 0.013817 |
| 15.000 | 0.014804 |
| 16.000 | 0.015791 |
| 17.000 | 0.016778 |
| 18.000 | 0.017765 |
| 19.000 | 0.018752 |
| mbar | atm |
|---|---|
| 20.000 | 0.019738 |
| 21.000 | 0.020725 |
| 22.000 | 0.021712 |
| 23.000 | 0.022699 |
| 24.000 | 0.023686 |
| 25.000 | 0.024673 |
| 26.000 | 0.025660 |
| 27.000 | 0.026647 |
| 28.000 | 0.027634 |
| 29.000 | 0.028621 |
| 30.000 | 0.029608 |
| 31.000 | 0.030595 |
| 32.000 | 0.031582 |
| 33.000 | 0.032568 |
| 34.000 | 0.033555 |
| 35.000 | 0.034542 |
| 36.000 | 0.035529 |
| 37.000 | 0.036516 |
| 38.000 | 0.037503 |
| 39.000 | 0.038490 |
| mbar | atm |
|---|---|
| 40.000 | 0.039477 |
| 41.000 | 0.040464 |
| 42.000 | 0.041451 |
| 43.000 | 0.042438 |
| 44.000 | 0.043425 |
| 45.000 | 0.044412 |
| 46.000 | 0.045398 |
| 47.000 | 0.046385 |
| 48.000 | 0.047372 |
| 49.000 | 0.048359 |
| 50.000 | 0.049346 |
| 51.000 | 0.050333 |
| 52.000 | 0.051320 |
| 53.000 | 0.052307 |
| 54.000 | 0.053294 |
| 55.000 | 0.054281 |
| 56.000 | 0.055268 |
| 57.000 | 0.056255 |
| 58.000 | 0.057242 |
| 59.000 | 0.058228 |
| mbar | atm |
|---|---|
| 60.000 | 0.059215 |
| 61.000 | 0.060202 |
| 62.000 | 0.061189 |
| 63.000 | 0.062176 |
| 64.000 | 0.063163 |
| 65.000 | 0.064150 |
| 66.000 | 0.065137 |
| 67.000 | 0.066124 |
| 68.000 | 0.067111 |
| 69.000 | 0.068098 |
| 70.000 | 0.069085 |
| 71.000 | 0.070072 |
| 72.000 | 0.071058 |
| 73.000 | 0.072045 |
| 74.000 | 0.073032 |
| 75.000 | 0.074019 |
| 76.000 | 0.075006 |
| 77.000 | 0.075993 |
| 78.000 | 0.076980 |
| 79.000 | 0.077967 |
Millibars to Atmospheres Conversion
Converting Millibars (mbar) to Atmospheres (atm) is a common pressure conversion. 1 mbar equals 0.000987 atm. For example, 100 mbar is equal to 0.098692 atm.
Quick Reference Values
1 mbar = 0.000987 atm. 5 mbar = 0.004935 atm. 10 mbar = 0.009869 atm. 25 mbar = 0.024673 atm. 50 mbar = 0.049346 atm. 100 mbar = 0.098692 atm.
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].
What is Atmospheres?
Atmospheres (atm) is a unit of pressure. One atmosphere (atm) is a unit of pressure defined as exactly 101,325 pascals (Pa). It approximates the average air pressure at sea level on Earth. The atmosphere unit is used for expressing pressures in meteorology and engineering [iso-80000]. The atmosphere was originally defined in the 19th century based on average sea-level air pressure. It was standardized by the International Union of Pure and Applied Chemistry (IUPAC) and other bodies to equal 101,325 Pa in the mid-20th century [nist-sp-811]. Atmospheres are used worldwide in scientific fields, including chemistry and physics, and in engineering applications like pressure vessel design. It is less common in everyday use outside these fields [nist-sp-811].
Common Misspellings
People often search for this conversion using these alternate spellings: milibars, milibars, millibar, milibar, atmosphers, atmosfere, atmospere, atmospherics. All of these refer to the Millibars to Atmospheres conversion.