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How to Convert MPAs to Newtons

Updated February 21, 2017

The System International (SI) unit of pressure is the Pascal, named for the French mathematician Blaise Pascal. The MegaPascal, or MPA, represents one million Pascals. The newton is the SI unit of force. To convert pressure into force, the force must act over a known area, so values in Pascals must be converted into newtons of force applied over one square meter. The symbol for newtons per square meter is N/m2.

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  1. Enter the value in MPA into the calculator, and then multiply by one million to convert the value to Pascals. For example, if the value in MPA is 34.5, multiply 34.5 by 1,000,000. The result, in this example 34,500,000, is the value expressed in Pascals.

  2. Convert the value from the previous step into scientific notation so that it becomes a single unit and a decimal fraction multiplied by a power of ten. The result is the pressure in Megapascals expressed in Newtons per meter squared, (N/m2). For example, a value such as 34,500,000 becomes 3.45 x 10^6 N/m2.

  3. Check for errors by reversing the calculations. Divide the answer by one million. If the result is not the original value in MPA then there was an error in your calculations. Repeat the process until the answer is correct.

  4. Tip

    The value of 1 Pascal is identical to 1 N/m2.

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Things You'll Need

  • Calculator

About the Author

David Robinson has written professionally since 2000. He is a Fellow of the Royal Geographical Society and the Royal Meteorological Society. He has written for the "Telegraph" and "Guardian" newspapers in the U.K., government publications, websites, magazines and school textbooks. He holds an honors Bachelor of Arts in geography and education and a teaching certificate from Durham University, England.

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