Convert Atmospheres to Millibars
Enter the pressure in atmospheres below to get the value converted to millibars.
How to Convert Atmospheres to Millibars
To convert an atmosphere measurement to a millibar measurement, multiply the pressure by the conversion ratio. One atmosphere is equal to 1,013.25 millibars, so use this simple formula to convert:
The pressure in millibars is equal to the atmospheres multiplied by 1,013.25.
Atmospheres and millibars are both units used to measure pressure. Keep reading to learn more about each unit of measure.
Atmospheres
The atmosphere is a reference measure of pressure equal to 101,325 pascals or 1,013,250 dynes. The atmosphere was originally defined as the pressure of 760 millimeters of mercury at standard gravity at 0 °C, but was later redefined in 1954 to be equal to 1,013,250 dynes.
Atmospheres can be abbreviated as atm, for example 1 atmosphere can be written as 1 atm.
Millibars
One millibar is equal to one-thousandth of a bar, which is defined as the pressure of one newton per square meter. One millibar is also equal to one hectopascal.
The millibar is a non-SI metric unit for pressure. In the metric system, "milli" is the prefix for 10-3. Millibars can be abbreviated as mbar, for example 1 millibar can be written as 1 mbar.
Atmosphere Measurements and Equivalent Millibar Conversions
| Atmospheres | Millibars |
|---|---|
| 1 atm | 1,013 mbar |
| 2 atm | 2,027 mbar |
| 3 atm | 3,040 mbar |
| 4 atm | 4,053 mbar |
| 5 atm | 5,066 mbar |
| 6 atm | 6,080 mbar |
| 7 atm | 7,093 mbar |
| 8 atm | 8,106 mbar |
| 9 atm | 9,119 mbar |
| 10 atm | 10,133 mbar |
| 11 atm | 11,146 mbar |
| 12 atm | 12,159 mbar |
| 13 atm | 13,172 mbar |
| 14 atm | 14,186 mbar |
| 15 atm | 15,199 mbar |
| 16 atm | 16,212 mbar |
| 17 atm | 17,225 mbar |
| 18 atm | 18,239 mbar |
| 19 atm | 19,252 mbar |
| 20 atm | 20,265 mbar |
| 21 atm | 21,278 mbar |
| 22 atm | 22,292 mbar |
| 23 atm | 23,305 mbar |
| 24 atm | 24,318 mbar |
| 25 atm | 25,331 mbar |
| 26 atm | 26,345 mbar |
| 27 atm | 27,358 mbar |
| 28 atm | 28,371 mbar |
| 29 atm | 29,384 mbar |
| 30 atm | 30,398 mbar |
| 31 atm | 31,411 mbar |
| 32 atm | 32,424 mbar |
| 33 atm | 33,437 mbar |
| 34 atm | 34,451 mbar |
| 35 atm | 35,464 mbar |
| 36 atm | 36,477 mbar |
| 37 atm | 37,490 mbar |
| 38 atm | 38,504 mbar |
| 39 atm | 39,517 mbar |
| 40 atm | 40,530 mbar |
More Atmosphere Pressure Conversions
- Convert to Pascals
- 1 atm is equal to 101,325 pascals
- Convert to Hectopascals
- 1 atm is equal to 1,013.25 hectopascals
- Convert to Bars
- 1 atm is equal to 1.01325 bars
- Convert to Kilograms Per Square Centimeter
- 1 atm is equal to 1.033227 kilograms per square centimeter
- Convert to Kilograms Per Square Meter
- 1 atm is equal to 10,332.3 kilograms per square meter
- Convert to Pounds Per Square Inch
- 1 atm is equal to 14.695964 pounds per square inch
- Convert to Pounds Per Square Foot
- 1 atm is equal to 2,116.22 pounds per square foot
- Convert to Torr
- 1 atm is equal to 760 torr
