Conversion Formula
$$MPa = psi \times 0.00689476$$
Multiply the value in Pound per Square Inch by 0.00689476 to get Megapascal.
psi to MPa Conversion Table
| Pound per Square Inch (psi) | Megapascal (MPa) |
|---|---|
| 0.1 | 0.000689476 |
| 0.5 | 0.00344738 |
| 1 | 0.00689476 |
| 2 | 0.0137895 |
| 5 | 0.0344738 |
| 10 | 0.0689476 |
| 25 | 0.172369 |
| 50 | 0.344738 |
| 100 | 0.689476 |
| 250 | 1.72369 |
| 500 | 3.44738 |
| 1,000 | 6.89476 |
psi to MPa in Engineering
Pressure conversions are essential across all engineering disciplines — from structural loads (PSI, ksi) to fluid systems (feet of water, mmHg) to atmospheric science (atm, mbar). Accurate pressure conversion is critical for piping design, HVAC, and geotechnical analysis.
Pound per Square Inch: Primary US customary pressure unit. Used extensively in mechanical, civil, and petroleum engineering in the United States.
Megapascal: Used for concrete and steel strength specifications internationally. 1 MPa = 1 N/mm².