Inches of mercury.
inHgs to Millibars Converter — inHg to mbar
Convert inHg (inHg) to Millibar (mbar) using the exact conversion factor (1 inhg = 33.86389 millibar). See the formula, worked examples, and conversion table.
inHgs to Millibars converter
Converter
Pressure Converter
Convert pascals, bars, PSI, atmospheres, mercury columns, water columns, and engineering pressure units.
Context values
Some unit families need one extra value for a physically accurate result.
A millibar is 100 pascals.
Result = input x 3386.389 / 100.
Pressure uses the pascal as the base unit.
Reserved above the conversion cards and below the converter.
About Converting inHgs to Millibars
inHg and Millibar both show up on pressure gauges — psi is standard on US tire and tool specifications, while bar is the everyday pressure unit across most of the rest of the world. Specifically: Inches of mercury, and a millibar is 100 pascals.
Formula
millibars = inhgs × 33.86389
This factor comes from each unit's defined relationship to the category's base unit: 1 inhg equals 3386.389 base units, and 1 millibar equals 100 base units, so dividing one by the other gives the direct inhg-to-millibar factor of 33.86389.
Simple example
1 inHg × 33.86389 = 33.86389 mbar
1 inhg = 33.86389 millibars.
Real-world example
35 inHg × 33.86389 = 1,185.23615 mbar
35 inhgs = 1,185.23615 millibars.
Conversion table
| inHg (inHg) | Millibar (mbar) |
|---|---|
| 1 inHg | 33.86389 mbar |
| 5 inHg | 169.31945 mbar |
| 10 inHg | 338.6389 mbar |
| 25 inHg | 846.59725 mbar |
| 50 inHg | 1,693.1945 mbar |
| 100 inHg | 3,386.389 mbar |
Reverse conversion: Millibar to inHg
33.86389 mbar × 0.02952998016 = 1 inHg
33.86389 millibars = 1 inhgs.
inhgs = millibars × 0.0295299801647
For a page dedicated to this direction, see Millibar to inHg.
Understanding the inHg (inHg)
Inches of mercury.
Understanding the Millibar (mbar)
A millibar is 100 pascals.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many millibars are in 1 inhg?
1 inhg equals 33.86389 millibars, using the exact defined conversion factor rather than an estimate.
How do I convert inhg to millibar?
Multiply the inhg value by 33.86389. The converter above does this instantly to whatever precision you set.
How do I convert millibar back to inhg?
Use the reverse factor: 1 millibar equals 0.0295299802 inhgs. You can also use the swap control in the converter above to flip the direction instantly.
What is a inhg?
inHg (inHg) is a unit of pressure.
What is a millibar?
Millibar (mbar) is a unit of pressure.
Is the inhg to millibar conversion exact?
Yes. Both inhg and millibar are defined by fixed standards rather than physical artifacts, so the factor of 33.86389 used above is exact to as many digits as you choose to display.