Bar to Inches of Mercury Converter — Pressure Calculator
Instantly convert atmospheric pressure between bar, inches of mercury (inHg), hectopascals (hPa), and psi. Essential for meteorology, aviation, and engineering.
Bar to inHg or inHg to Bar?
Select your preferred conversion direction. Enter the pressure value to instantly see the matched conversion across all major meteorological and engineering units.
Bar to inHg Converter
Convert pressure from bar to inches of mercury and other units
Default is standard atmospheric pressure (1.01325 bar)
Pressure Conversion Result
Converted values across multiple units
Enter a pressure value in bar, then click Convert to inHg.
inHg to Bar Converter
Convert pressure from inches of mercury to bar and other units
Default is standard atmospheric pressure (29.9213 inHg)
Pressure Conversion Result
Converted values across multiple units
Enter a pressure value in inHg, then click Convert to Bar.
Common Pressure Conversions
Standard reference points for atmospheric and engineering pressure conversions. Values are based on standard gravity and 0 °C (32 °F) for mercury density.
| Reference Point | Bar | Inches of Mercury (inHg) | Hectopascals (hPa) | PSI |
|---|---|---|---|---|
| Standard Atmosphere (atm) | 1.01325 | 29.9213 | 1013.25 | 14.696 |
| 1 Bar (exact) | 1.00000 | 29.5300 | 1000.00 | 14.5038 |
| 1 inHg (at 0 °C) | 0.03386 | 1.0000 | 33.8639 | 0.49115 |
| 1 hPa / 1 mbar | 0.00100 | 0.02953 | 1.0000 | 0.01450 |
| 1 PSI | 0.06895 | 2.03602 | 68.9476 | 1.0000 |
Pressure Converter FAQ
Everything meteorologists, pilots, and engineers ask about barometric pressure and unit conversions.
To convert bar to inches of mercury, multiply the pressure value in bar by 29.52998. For example, 1 bar is equal to approximately 29.53 inHg.
Standard atmospheric pressure at sea level is defined as 1.01325 bar, which is equivalent to 29.9213 inches of mercury (inHg), 1013.25 hectopascals (hPa), or 14.696 psi.
An inch of mercury (inHg) is a non-SI unit of pressure defined as the pressure exerted by a column of mercury 1 inch high at 32 °F (0 °C) at the standard acceleration of gravity. It is widely used in aviation and meteorology, especially in the United States.
Not exactly. 1 bar is defined as exactly 100,000 Pascals (100 kPa). Standard atmospheric pressure is slightly higher at 1.01325 bar. However, ‘bar’ is often used as a convenient approximation for atmospheric pressure in many engineering contexts.
Pilots, particularly in the United States, use inches of mercury (inHg) to set their altimeters. The altimeter measures atmospheric pressure to determine altitude, and inHg has been the traditional standard for aviation barometric pressure settings in North America.