Bar Converter
Convert Bar to Atmosphere Technical 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.
Atmosphere (Technical)atm
Target UnitThe technical atmosphere (atm) is a unit of pressure defined as being precisely equal to 101325 pascals (Pa). It is widely used in various scientific and engineering applications, particularly in fields such as meteorology, aviation, and chemistry. The atmosphere is a convenient measure of pressure that reflects the average atmospheric pressure at sea level. It is not an SI unit, but it is accepted for use with the SI system. The unit is commonly used in calculations involving gas laws, fluid dynamics, and other applications where pressure measurement is critical.
Current Use
The technical atmosphere is primarily used in fields such as meteorology, aviation, and engineering. It serves as a reference pressure in various calculations, such as those involving the behavior of gases under different conditions. It is also used in the calibration of pressure gauges and barometers, ensuring consistency in pressure measurements across different instruments and applications.
Fun Fact
The atmosphere is defined to be equivalent to 101325 pascals, but it can also be expressed in other units, such as mmHg and bar.
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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
Atmosphere (Technical)
pressure • Non-SI
Definition
The technical atmosphere (atm) is a unit of pressure defined as being precisely equal to 101325 pascals (Pa). It is widely used in various scientific and engineering applications, particularly in fields such as meteorology, aviation, and chemistry. The atmosphere is a convenient measure of pressure that reflects the average atmospheric pressure at sea level. It is not an SI unit, but it is accepted for use with the SI system. The unit is commonly used in calculations involving gas laws, fluid dynamics, and other applications where pressure measurement is critical.
History & Origin
The concept of atmospheric pressure dates back to the work of scientists like Evangelista Torricelli in the 17th century, who demonstrated that air has weight. The atmosphere was first defined as a unit of pressure in the 19th century as scientists needed a consistent way to measure atmospheric pressure for various scientific applications.
Etymology: The term 'atmosphere' is derived from the Greek words 'atmos' meaning vapor and 'sphaira' meaning sphere, thus referring to the vaporous envelope surrounding the Earth.
Current Use
The technical atmosphere is primarily used in fields such as meteorology, aviation, and engineering. It serves as a reference pressure in various calculations, such as those involving the behavior of gases under different conditions. It is also used in the calibration of pressure gauges and barometers, ensuring consistency in pressure measurements across different instruments and applications.
💡 Fun Facts
- •The atmosphere is defined to be equivalent to 101325 pascals, but it can also be expressed in other units, such as mmHg and bar.
- •The average atmospheric pressure at sea level is equivalent to the weight of a column of mercury 760 mm high.
- •The term 'standard atmosphere' is sometimes used to refer to the technical atmosphere, helping to standardize pressure measurements across various scientific disciplines.
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Frequently Asked Questions
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