Bar Converter
Convert Bar to Millipascal 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.
MillipascalmPa
Target UnitThe millipascal (mPa) is a metric unit of pressure defined as one-thousandth of a pascal (Pa). It is used to express small pressure values in a variety of scientific and engineering applications. The pascal itself is defined as one newton per square meter (N/m²), making the millipascal equal to 0.001 N/m². This unit is particularly useful when dealing with low-pressure situations, such as atmospheric measurements, fluid dynamics, and various industrial applications. The millipascal is commonly used in fields where precise pressure measurements are critical.
Current Use
Today, the millipascal is widely used in industries such as meteorology, engineering, and manufacturing. It is particularly common in the calibration of pressure measurement instruments, where small pressure variations need to be detected accurately. Laboratory settings often utilize millipascal measurements when dealing with gases and liquids under low-pressure conditions.
Fun Fact
The millipascal is often used in meteorology to report small changes in atmospheric pressure.
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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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Millipascal
pressure • Non-SI
Definition
The millipascal (mPa) is a metric unit of pressure defined as one-thousandth of a pascal (Pa). It is used to express small pressure values in a variety of scientific and engineering applications. The pascal itself is defined as one newton per square meter (N/m²), making the millipascal equal to 0.001 N/m². This unit is particularly useful when dealing with low-pressure situations, such as atmospheric measurements, fluid dynamics, and various industrial applications. The millipascal is commonly used in fields where precise pressure measurements are critical.
History & Origin
The pascal was named after Blaise Pascal, a 17th-century French mathematician, physicist, and inventor who made significant contributions to fluid mechanics and pressure. The millipascal emerged as a derived unit to facilitate measurements in scenarios where the pascal unit was too large, allowing for easier reporting and calculation in scientific and engineering contexts.
Etymology: The term 'millipascal' combines the prefix 'milli-', meaning one-thousandth, with 'pascal', derived from the name of Blaise Pascal.
Current Use
Today, the millipascal is widely used in industries such as meteorology, engineering, and manufacturing. It is particularly common in the calibration of pressure measurement instruments, where small pressure variations need to be detected accurately. Laboratory settings often utilize millipascal measurements when dealing with gases and liquids under low-pressure conditions.
💡 Fun Facts
- •The millipascal is often used in meteorology to report small changes in atmospheric pressure.
- •One millipascal is equivalent to roughly 0.01 millimeters of water column (mm H2O).
- •Pressure sensors that measure in millipascals can detect changes in environmental conditions as small as a few mPa.
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Frequently Asked Questions
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