It is defined as the pressure created when a force of one pound-force is applied to a surface of one square inch. To be able to do this anyway, an average approximation is always used.ĭefinition : A PSI is a unit used worldwide. Because it is not the same everywhere, you cannot simply apply a conversion factor to convert PSI to Pa or bar. The pressure that a Pound delivers depends on gravity which is not the same everywhere on earth. The PSI is an American unit and stands for Pounds per Square Inch. 1 atmosphere is therefore 1013 millibars and 1013 hectopascals. In this case, 1 millibar is exactly equal to 1 hectopascal. Air pressure is also regularly expressed in millibars or hectopascals. The atmosphere corresponds more closely to the average air pressure at sea level, and is defined as follows: 1 atm = 101.325 Pa so just over 1 bar. Meteorologists and weather forecasters worldwide use this unit, as an expression in Pascal would lead to much longer numerical results. Where atmospheric pressure equals 1013.25 mbar (101.325 kPa). Millibars (symbol: MB) is also commonly used to describe atmospheric pressure.
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The International Bureau of Weights and Measures, while indicating that authors are free to use bar, has not included it in the permitted list of the SI.
The term “bar” comes from the Greek word “baros,” meaning weight.Ĭurrent usage : Although bar is the unit of pressure, it is not accepted by the International System of Units (SI) and is even disapproved in some areas. History: Bar was once introduced by Vilhelm Bjerknes, a Norwegian meteorologist who was at the forefront of modern weather forecasting. This unit is pretty much the standard reference when it comes to pressure. The bar is defined as 100,000 Pa, or 100 kPa. The bar is originally a British unit, and 1 bar roughly corresponds to the average air pressure at sea level (although 1 atmosphere (atm) is a better description). By tailoring the MPa to psi table according to your preferences, you can generate precise and personalized conversion results.However, Pascal is not the only unit used for pressure: This feature allows you to set the starting value, choose the increments between each entry, and select the desired level of accuracy. Please visit pressure conversion to convert all pressure units.īelow, you have the option to create your own customized megapascal to psi conversion table to meet your specific needs. It represents the amount of force applied to an area of one square inch. Pound force per square inch is a unit of pressure commonly used in the United States and some other countries that follow the imperial system of measurement. Megapascal is a metric pressure unit and is equal to 1000000 force of newton per square meter. Using the simple formulas below, you can easily convert psi to megapascals. Therefore, 1000 psi equal to 6.89475729 megapascals. To convert psi to megapascal, multiply the psi value 0.00689475729 or divide by 145.037737797.įor example, to convert 1000 psi to megapascal, you can use the following formula:
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Psi = MPa * 145.037737797 How to convert psi to megapascal?ġ Pound force per square inch (psi) is equal to 0.00689475729 megapascal (MPa). Using the simple formula below, you can easily convert megapascal to psi. Therefore, 3 megapascals equal to 435.113213391 psi. To convert megapascal to psi, multiply the megapascal value by 145.037737797.įor example, to convert 3 megapascals to psi, you can use the following formula: How to convert megapascal to psi?ġ Megapascal (MPa) is equal to 145.037737797 pound force per square inch (psi). With this tool, you can easily determine the psi value of a megapascal value by simply sliding the bar to the left or to the right, the converter instantly calculates and displays the corresponding psi value.īelow, you will find information on how to determine the equivalent value of psi in a megapascal and how to accurately convert megapascal to psi and vice versa. This table lists a range of common megapascal values alongside their corresponding psi equivalents for a quick reference.Īlso, we offer a unique and interactive slide bar converter that simplifies the process of converting common megapascal pressure values. In addition to the converter, the megapascal to psi pressure conversion table can be a helpful resource. The converter calculates the equivalent pressure in psi and displays the result instantly.
It works by taking the input value in megapascals and applying the conversion factor of 145.037737797 psi per megapascal. The megapascal to pound per square inch converter and conversion table provide a simple and efficient way to convert MPa to psi.
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