PSI to Megapascal
Convert PSI to Megapascal instantly. Free online engineering unit converter with exact formula, conversion table and FAQ.
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Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
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Formula
MPa = psi × 0.00689476
psi = MPa × 145.038
Conversion table
| 1 psi | 0.00689476 MPa |
| 5 psi | 0.0344738 MPa |
| 10 psi | 0.0689476 MPa |
| 20 psi | 0.137895 MPa |
| 50 psi | 0.344738 MPa |
| 100 psi | 0.689476 MPa |
| 500 psi | 3.44738 MPa |
| 1000 psi | 6.89476 MPa |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is the PSI (psi). Pounds per square inch.
What is the destination unit in this conversion?
The destination unit is the Megapascal (MPa). Megapascal is 1000000 pascal units.
How do I convert PSI to Megapascal?
Multiply the PSI value by 0.00689476. For example, 10 psi × 0.00689476 = 0.0689476 MPa.
Is the PSI to Megapascal conversion exact?
Yes. Both units belong to the same engineering measurement family (pressure and mechanical stress), so the ratio between them is a fixed, defined value rather than a measured approximation.
Where is this conversion commonly used?
It's used whenever a value expressed in PSI needs to be compared with, or reported in, Megapascal, such as in engineering, scientific, or industrial calculations.
Can I convert Megapascal back to PSI?
Yes. Multiply the Megapascal value by 145.038 to get PSI.
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About this conversion
This page converts PSI (psi) to Megapascal (MPa) within the engineering converter.
Pounds per square inch. Megapascal is 1000000 pascal units.
The formula is MPa = psi × 0.00689476, based on each unit's fixed relationship to the pressure and mechanical stress base unit.
The conversion is exact, since it relies on a fixed numerical ratio between the two units rather than a measured or approximate value.
Use the calculator above for instant results, or the table below for common PSI values already converted to Megapascal.