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There is no question that pressure unit conversions are one of the most common types of conversions. Just think of barometers for a second. As you probably already know, barometers are instruments that are used to measure pressure. One of the most interesting things about barometers is that they use a wide variety of units of measure depending on the method used to measure pressure, on the country they are manufactured, and the intended use. And this is where millibars and atmospheres come into place. They are a part of this wide variety of units of measure.
What Is A Millibar?
Simply put, one millibar is defined as the pressure of one newton per square meter and is equal to one-thousandth of a bar and it is also equivalent to one hectopascal.
One of the things that you need to know about the millibar is that this is a non-SI metric unit of pressure. Millibars are often abbreviated as mbar.
What Is Atmosphere?
The atmosphere was originally defined as the pressure of 760 millimeters of mercury at standard gravity at 0 °C. However, in 1954, it was redefined to be equal to 1,013,250 dynes.
The atmosphere is a reference measure of pressure equal to 101,325 pascals or 1,013,250 dynes. Atmospheres are often abbreviated as atm.
Learn more about the atmosphere here.
Converting Millibars To Atmospheres – Using Our Calculator
When you are trying to convert millibars to atmospheres, the easiest and fastest way that you have to do is to use our calculator that is located at the top of this page.
If you check it, all you need to do is to add the number of units that you want to convert and then select the right units of measurement that you are using. In this case, since you want to convert millibars to atmospheres, you need to have the Convert from field with the Millibar selected and the Convert to field with the Atmosphere (normal) selected.
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But let’s take a look at a simple example. Let’s say that you want to convert 50 millibars to atmospheres. As we just said, you just need to add the number 50 to the number of units field. Then, you ned to ensure that you have the right units of measurement selected, and you just need to look at the bottom of the calculator to get your result:
50 Millibars = 0.04934616333580064 Atmospheres
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Millibars To Atmospheres – Calculating By Hand
Sometimes, you may need to convert millibars to atmospheres by hand. Well, in order to do this, you just need to know the conversion ratio between these two units of pressure.
In case you don’t know:
1 Millibar = 0.0009869232667160128 Atmospheres
Practical Example #1: Let’s say that you want to convert 2050 millibars to atmospheres.
Considering that you already know the conversion ratio:
1 Millibar = 0.0009869232667160128 Atmospheres
and that you want to convert 2050 millibars to atmospheres:
2050 Millibars = 2050 X 0.0009869232667160128 Atmospheres
2050 Millibars = 2.467308166790032 Atmospheres
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Practical Example #2: Let’s say that you want to convert 50000 millibars to atmospheres.
Considering that you already know the conversion ratio:
1 Millibar = 0.0009869232667160128 Atmospheres
and that you want to convert 50000 millibars to atmospheres:
50000 Millibars = 50000 X 0.0009869232667160128 Atmospheres
50000 Millibars = 49.34616333580064 Atmospheres
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Millibars To Atmospheres Conversion Table
| Millibars | Atmospheres |
| 1 | 0.000987 |
| 2 | 0.001974 |
| 3 | 0.002961 |
| 4 | 0.003948 |
| 5 | 0.004935 |
| 6 | 0.005922 |
| 7 | 0.006908 |
| 8 | 0.007895 |
| 9 | 0.008882 |
| 10 | 0.009869 |
| 20 | 0.019738 |
| 30 | 0.029608 |
| 40 | 0.039477 |
| 50 | 0.049346 |
| 100 | 0.098692 |
| 200 | 0.197385 |
| 300 | 0.296077 |
| 400 | 0.394769 |
| 500 | 0.493462 |
| 1000 | 0.986923 |
| 2000 | 1.9738 |
| 3000 | 2.9608 |
| 4000 | 3.9477 |
| 5000 | 4.9346 |
| 6000 | 5.9215 |
| 7000 | 6.9085 |
| 8000 | 7.8954 |
| 9000 | 8.8823 |
| 10000 | 9.8692 |