Inches of mercury (inHg) to Millibar (mbar) Conversion
Inches of mercury
The inch of mercury (inHg) is a unit of pressure equal to the pressure exerted by a column of mercury 1 inch (25.4 mm) high — approximately 3,386.39 Pa or 0.0334 atm. It is used in US aviation for altimeter settings (standard pressure is 29.92 inHg) and in US weather reports for barometric pressure. Pilots set their altimeters in inHg based on local barometric pressure to ensure accurate altitude readings.
Millibar
The millibar (mbar) is a unit of pressure equal to one thousandth of a bar (100 Pa). It is the standard unit for atmospheric pressure in meteorology: standard atmospheric pressure is 1,013.25 mbar, and weather maps plot isobars (lines of equal pressure) in millibars or hectopascals (1 hPa = 1 mbar). The eye of a powerful hurricane can have a central pressure below 900 mbar, while high-pressure systems typically exceed 1,020 mbar.
| Inches of mercury (inHg) | Millibar (mbar) |
|---|---|
| 0.1 inHg | 3.38638864034 mbar |
| 1 inHg | 33.8638864034 mbar |
| 2 inHg | 67.7277728068 mbar |
| 3 inHg | 101.5916592102 mbar |
| 5 inHg | 169.319432017 mbar |
| 10 inHg | 338.638864034 mbar |
| 20 inHg | 677.277728068 mbar |
| 30 inHg | 1015.916592102 mbar |
| 50 inHg | 1693.19432017 mbar |
| 100 inHg | 3386.38864034 mbar |
| 1000 inHg | 33863.8864034 mbar |
Frequently Asked Questions (FAQ)
How many millibar are in 1 inches of mercury?
1 inches of mercury (inHg) is exactly 33.864 millibar (mbar).
How do I convert inches of mercury to millibar?
Multiply the value in inches of mercury by 33.864 to get the result in millibar. Or use the converter above — type any number and see the result instantly.