What this tool does
Convert millibars to hectopascals, inches of mercury, pascals, kilopascals, bar, atmospheres, psi, torr and mmHg. Type an amount in millibars, choose the units, and the tool converts it to inches of mercury (conventional). It offers 10 pressure units and also shows the same amount in the others.
Inputs
- Value: A number.
- From: Choose one from 10 options, including Millibar, Hectopascal, Pascal, Kilopascal, Bar, Standard atmosphere. Starts as Millibar.
- To: Choose one of the same 10 units as "From". Starts as Inch of mercury (conventional).
How to use
- Enter the amount you want to convert.
- Choose the unit to convert from and the unit to convert to.
- Read the result: the converted amount and the same amount in the other units. It appears once every required field has a valid value.
Worked examples
Conversions from millibars to inches of mercury (conventional):
- 1 mbar ≈ 0.02953 inHg
- 5 mbar ≈ 0.14765 inHg
- 10 mbar ≈ 0.2953 inHg
- 50 mbar ≈ 1.476499 inHg
- 100 mbar ≈ 2.952998 inHg
Multiply the number of millibars by about 0.02953 to get inches of mercury (conventional). The factor follows from exact definitions. It has more digits than fit here, so it is shown rounded.
Sources: Millibar: exact by definition. Inch of mercury (conventional): exact by definition.
Limitations
- Converts pressure units only. It does not correct a barometer reading for altitude or temperature.
- Inches of mercury use the conventional definition.
FAQs
- Q: How many millibars are in a bar?
- A: There are exactly 1,000 millibars in one bar.
- Q: How do I convert millibars to inches of mercury?
- A: Pick millibar as From and inch of mercury as To. A standard atmosphere, 1,013.25 mbar, is about 29.92 inHg.
- Q: Is a millibar the same as a hectopascal?
- A: Yes. One millibar is exactly one hectopascal.
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