Bar Converter
Convert Bar to Centimeter Mercury 0 176 C 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.
Centimeter of MercurycmHg
Target UnitThe centimeter of mercury (cmHg) is a unit of pressure that corresponds to the height of a column of mercury 1 centimeter in height under the influence of standard gravity. It is commonly used in various scientific and engineering applications to measure pressure. The standard atmospheric pressure is defined as 76 cmHg. This unit is derived from the physical principle that the pressure exerted by a fluid in an open system is proportional to the height of the fluid column above it. Hence, 1 cmHg is approximately equal to 98.0665 pascals.
Current Use
The centimeter of mercury is widely used in meteorology, automotive industries, and scientific laboratories to measure atmospheric pressure and partial pressures of gases. It is particularly useful in creating barometers and altimeters, providing a practical and precise way to quantify pressure changes. In many countries, cmHg is a common unit for displaying tire pressure and other applications where pressure measurement is critical.
Fun Fact
The centimeter of mercury is often used as a reference for comparing pressures in different contexts, such as altimeters and weather reports.
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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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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'.
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🔗 Related Units
Centimeter of Mercury
pressure • Non-SI
Definition
The centimeter of mercury (cmHg) is a unit of pressure that corresponds to the height of a column of mercury 1 centimeter in height under the influence of standard gravity. It is commonly used in various scientific and engineering applications to measure pressure. The standard atmospheric pressure is defined as 76 cmHg. This unit is derived from the physical principle that the pressure exerted by a fluid in an open system is proportional to the height of the fluid column above it. Hence, 1 cmHg is approximately equal to 98.0665 pascals.
History & Origin
The centimeter of mercury emerged from the need to measure atmospheric pressure, particularly in the context of barometers. Early barometers used mercury due to its high density and low vapor pressure, allowing for a manageable column height to represent atmospheric pressure. The concept of measuring pressure using a liquid column dates back to the 17th century, when Evangelista Torricelli demonstrated that atmospheric pressure can support a column of mercury.
Etymology: The term 'centimeter' is derived from the French 'centimètre', combining 'centi-', meaning one-hundredth, and 'mètre', meaning meter. 'Mercury' comes from the Latin 'hydrargyrum', referring to the element's fluid metallic form.
Current Use
The centimeter of mercury is widely used in meteorology, automotive industries, and scientific laboratories to measure atmospheric pressure and partial pressures of gases. It is particularly useful in creating barometers and altimeters, providing a practical and precise way to quantify pressure changes. In many countries, cmHg is a common unit for displaying tire pressure and other applications where pressure measurement is critical.
💡 Fun Facts
- •The centimeter of mercury is often used as a reference for comparing pressures in different contexts, such as altimeters and weather reports.
- •Mercury is used in barometers because it has a high density, allowing for a shorter column to represent atmospheric pressure.
- •In many regions, pressure is often measured in cmHg for both practical and historical reasons, despite the metric system's global adoption.
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Frequently Asked Questions
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To convert to , multiply your value by 1. For example, 10 equals 10 .
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The formula is: = × 1. This conversion factor is based on international standards.
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