Bar Converter
Convert Bar to Inch Mercury 60 176 F and more • 57 conversions
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Unit Explanations
Barbar
Source UnitThe bar is a metric unit of pressure, not part of the International System of Units (SI), but is commonly used in industry and meteorology. It is defined as exactly 100,000 pascals, which is slightly less than the average atmospheric pressure on Earth at sea level. One bar is equivalent to 0.987 atmospheres, 14.5038 pounds per square inch (psi), or 750.06 millimeters of mercury (mmHg). Although not an SI unit, it is accepted for use with the SI and is widely used due to its convenient size for many applications.
Current Use
The bar is widely used in various fields including meteorology for atmospheric pressure, and in industries such as automotive and aviation for tire pressure and cabin pressure monitoring. It is especially favored in contexts where moderate pressures need to be measured with a single-digit number, avoiding the unwieldy values that would result from using pascals.
Fun Fact
The bar is almost exactly the atmospheric pressure on Earth at sea level.
Inch of MercuryinHg
Target UnitAn inch of mercury (inHg) is a unit of pressure defined as the pressure exerted at the base of a vertical column of mercury precisely one inch high, at standard gravity. Specifically, it is equivalent to the pressure exerted by a mercury column of 1 inch (25.4 mm) in height at a temperature of 0°C (32°F). This unit is commonly used in meteorology, aviation, and various engineering applications to quantify atmospheric pressure and vacuum pressure. The measurement is crucial for understanding weather patterns and calibrating barometers.
Current Use
Today, the inch of mercury is widely utilized in various fields such as meteorology, aviation, and engineering. Meteorologists use inHg to report atmospheric pressure, helping to predict weather conditions. In aviation, pilots rely on barometric pressure settings in inches of mercury for altimeter calibration, ensuring safe altitude measurements. Additionally, vacuum systems in laboratories and industrial processes often use inHg to specify vacuum levels.
Fun Fact
Mercury is nearly 14 times denser than water, making it suitable for barometers.
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📐Conversion Formula
= × 1.00000How to Convert
To convert to , multiply the value by 1.00000. This conversion factor represents the ratio between these two units.
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💡 Pro Tip: For the reverse conversion ( → ), divide by the conversion factor instead of multiplying.
Bar
pressure • Non-SI
Definition
The bar is a metric unit of pressure, not part of the International System of Units (SI), but is commonly used in industry and meteorology. It is defined as exactly 100,000 pascals, which is slightly less than the average atmospheric pressure on Earth at sea level. One bar is equivalent to 0.987 atmospheres, 14.5038 pounds per square inch (psi), or 750.06 millimeters of mercury (mmHg). Although not an SI unit, it is accepted for use with the SI and is widely used due to its convenient size for many applications.
History & Origin
The bar as a unit of pressure was introduced in the early 20th century. It was created to provide a convenient metric unit for expressing pressures without having to resort to using large numbers, as can occur with the pascal. The bar was defined in 1909 by the International Union of Pure and Applied Chemistry (IUPAC) to be equivalent to 100,000 pascals, simplifying conversion with the SI system.
Etymology: The word 'bar' comes from the Greek word 'baros', meaning weight.
Current Use
The bar is widely used in various fields including meteorology for atmospheric pressure, and in industries such as automotive and aviation for tire pressure and cabin pressure monitoring. It is especially favored in contexts where moderate pressures need to be measured with a single-digit number, avoiding the unwieldy values that would result from using pascals.
💡 Fun Facts
- •The bar is almost exactly the atmospheric pressure on Earth at sea level.
- •The unit 'bar' is not an SI unit, but it's accepted for use with SI due to its practicality.
- •The word 'barometer', an instrument for measuring atmospheric pressure, shares its root with the unit 'bar'.
📏 Real-World Examples
🔗 Related Units
Inch of Mercury
pressure • Non-SI
Definition
An inch of mercury (inHg) is a unit of pressure defined as the pressure exerted at the base of a vertical column of mercury precisely one inch high, at standard gravity. Specifically, it is equivalent to the pressure exerted by a mercury column of 1 inch (25.4 mm) in height at a temperature of 0°C (32°F). This unit is commonly used in meteorology, aviation, and various engineering applications to quantify atmospheric pressure and vacuum pressure. The measurement is crucial for understanding weather patterns and calibrating barometers.
History & Origin
The concept of measuring pressure using a column of liquid dates back to the 17th century, when Italian scientist Evangelista Torricelli invented the barometer in 1643. Torricelli's work established the relationship between atmospheric pressure and the height of a liquid column. The use of mercury became standard due to its density and stability, leading to the adoption of the inch of mercury as a practical unit of measurement.
Etymology: The term 'inch of mercury' derives from the physical properties of mercury (Hg), a dense liquid metal, and the imperial unit of length, the inch.
Current Use
Today, the inch of mercury is widely utilized in various fields such as meteorology, aviation, and engineering. Meteorologists use inHg to report atmospheric pressure, helping to predict weather conditions. In aviation, pilots rely on barometric pressure settings in inches of mercury for altimeter calibration, ensuring safe altitude measurements. Additionally, vacuum systems in laboratories and industrial processes often use inHg to specify vacuum levels.
💡 Fun Facts
- •Mercury is nearly 14 times denser than water, making it suitable for barometers.
- •The inch of mercury is still commonly used in the United States and a few other countries, despite the metrication trend.
- •The phrase 'inches of mercury' is often used in everyday language to refer to high or low pressure systems in weather discussions.
📏 Real-World Examples
🔗 Related Units
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Frequently Asked Questions
How do I convert to ?▼
To convert to , multiply your value by 1. For example, 10 equals 10 .
What is the formula for to conversion?▼
The formula is: = × 1. This conversion factor is based on international standards.
Is this to converter accurate?▼
Yes! MetricConv uses internationally standardized conversion factors from organizations like NIST and ISO. Our calculations support up to 15 decimal places of precision, making it suitable for scientific, engineering, and everyday calculations.
Can I convert back to ?▼
Absolutely! You can use the swap button (⇄) in the converter above to reverse the conversion direction, or visit our to converter.