Convert Atmospheres to Millibars

Enter your atmosphere value in the form below to get the value calculated in millibars.

Results in Millibars:

1 atm = 1,013.25 mb

How to Convert Atmospheres to Millibars Using an Easy Conversion Formula

Calculators can be used to convert measurements from one unit to another

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Convert atmospheres to millibars with this simple formula:

millibars = atmospheres × 1,013.25

Converting an atmosphere pressure measurement to a millibar measurement involves multiplying your pressure by the conversion ratio to find the result. An atmosphere is equal to 1,013.25 millibars, so to convert simply multiply by 1,013.25.

For example:

5 atm = (5 × 1,013.25) = 5,066.25 mb

Atmospheres and millibars are both units used to measure pressure. Learn more about pressure and find more pressure measurement conversion calculators. An atmosphere is a pressure measurement and can be abbreviated as atm, for example 1 atm. A millibar is a metric measurement and can be abbreviated as mb, for example 1 mb. Learn more about the metric system, including the common unit prefixes and how to convert between metric units.

atmospheres and millibars are units used to measure pressure

Convert Millibars to Atmospheres

Atmosphere Measurements and Equivalent Millibar Conversions

Common atmosphere values converted to the equivalent millibar value
Atmospheres	Millibars
1 atm	1,013 mb
2 atm	2,027 mb
3 atm	3,040 mb
4 atm	4,053 mb
5 atm	5,066 mb
6 atm	6,080 mb
7 atm	7,093 mb
8 atm	8,106 mb
9 atm	9,119 mb
10 atm	10,133 mb
11 atm	11,146 mb
12 atm	12,159 mb
13 atm	13,172 mb
14 atm	14,186 mb
15 atm	15,199 mb
16 atm	16,212 mb
17 atm	17,225 mb
18 atm	18,239 mb
19 atm	19,252 mb
20 atm	20,265 mb
21 atm	21,278 mb
22 atm	22,292 mb
23 atm	23,305 mb
24 atm	24,318 mb
25 atm	25,331 mb
26 atm	26,345 mb
27 atm	27,358 mb
28 atm	28,371 mb
29 atm	29,384 mb
30 atm	30,398 mb
31 atm	31,411 mb
32 atm	32,424 mb
33 atm	33,437 mb
34 atm	34,451 mb
35 atm	35,464 mb
36 atm	36,477 mb
37 atm	37,490 mb
38 atm	38,504 mb
39 atm	39,517 mb
40 atm	40,530 mb