Millibar to inHg Converter
One Millibar equals 0.0295299833 inHg (1 mbar = 0.0295299833 inHg). Multiply a Millibar value by 0.0295299833 to get the equivalent in inHg. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
inHg = mbar × 0.0295299833
Multiply the Millibar value by 0.0295299833 to get the equivalent value in inHg.
Example Conversions
1 Millibar (mbar)
0.0295299833 inHg (inHg)
5 Millibar (mbar)
0.1476499165 inHg (inHg)
10 Millibar (mbar)
0.295299833 inHg (inHg)
25 Millibar (mbar)
0.7382495825 inHg (inHg)
100 Millibar (mbar)
2.95299833 inHg (inHg)
Conversion Table
| Millibar (mbar) | inHg (inHg) |
|---|---|
| 0.1 | 0.00295299833 |
| 0.5 | 0.01476499165 |
| 1 | 0.0295299833 |
| 2 | 0.0590599666 |
| 5 | 0.1476499165 |
| 10 | 0.295299833 |
| 25 | 0.7382495825 |
| 50 | 1.476499165 |
| 100 | 2.95299833 |
| 250 | 7.382495825 |
| 500 | 14.76499165 |
| 1000 | 29.5299833 |
How to Convert Manually
Use these steps to convert Millibar values to inHg without the calculator.
- Write down the value in Millibar (mbar) that you want to convert.
- Multiply that value by 0.0295299833.
- For example, 10 Millibar × 0.0295299833 = 0.295299833 inHg.
- Label the result as inHg (inHg).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Millibar and one inHg.
About Millibar and inHg
The millibar is one thousandth of a bar, identical to the hectopascal. Meteorology has used millibars for surface pressure maps and storm intensity for a century. The inch of mercury is about 3,386.39 pascals. US weather reports and aviation altimeter settings quote barometric pressure in inches of mercury. One Millibar equals 0.0295299833 inHg (1 mbar = 0.0295299833 inHg). Millibar to inHg conversion comes up most often in weather maps and forecasts and in hurricane intensity reporting, typically when figures need restating for US barometric weather reports.
Precision and Rounding: Several pressure factors are exact by definition (1 atm = 101,325 Pa; 1 bar = 100,000 Pa) while others, like psi and mmHg, are derived and carry long decimals. Tire and weather readings tolerate whole-number rounding; calibration, medicine, and process engineering need the full factor before rounding.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15 Millibar equals 0.4429497495 inHg.
15 mbar × 0.0295299833 = 0.4429497495 inHg
FAQ
How do I convert Millibar to inHg?
Multiply the Millibar value by 0.0295299833 to get the equivalent value in inHg.
What is the formula for Millibar to inHg?
The formula is inHg = mbar × 0.0295299833.
How many inHg are in 1 Millibar?
1 Millibar equals 0.0295299833 inHg.
Can I convert inHg back to Millibar?
Yes. 1 inHg equals 33.8638864 Millibar, and the related converter can reverse the calculation.
What are common names for Millibar and inHg?
Millibar is shown as mbar and may also be searched as millibars, mb. inHg is shown as inHg and may also be searched as inches of mercury, in Hg.
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