Convert pressure units — pascal, PSI, bar, atmosphere, torr, mmHg and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 MPa | 0.145038 psi | |
| 0.01 MPa | 1.45038 psi | |
| 0.1 MPa | 14.5038 psi | |
| 1 MPa | 145.038 psi | |
| 5 MPa | 725.188 psi | |
| 10 MPa | 1450.38 psi | |
| 50 MPa | 7251.88 psi | |
| 100 MPa | 14503.8 psi | |
| 1000 MPa | 145038 psi |
Formula: PSI = Megapascal × 145
Multiply any megapascal value by 145 to get psi.
Reverse: Megapascal = PSI × 0.006895
Common megapascal values — factor: 1 MPa = 145 psi
| Megapascal (MPa) | PSI (psi) | Context |
|---|---|---|
| 0.0001 MPa | 0.0145 psi | 1 kPa |
| 0.001 MPa | 0.145 psi | 10 kPa |
| 0.01 MPa | 1.45 psi | 0.1 bar |
| 0.1 MPa | 14.5 psi | 1 bar |
| 0.1013 MPa | 14.7 psi | 1 atm |
| 1 MPa | 145 psi | 10 bar / hydraulics |
| 10 MPa | 1,450 psi | 100 bar |
| 100 MPa | 1.45e+04 psi | 1,000 bar |
| 200 MPa | 2.901e+04 psi | Scuba extreme |
| 400 MPa | 5.802e+04 psi | Waterjet cutting |
| 600 MPa | 8.702e+04 psi | Ultra-high pressure |
| 1,000 MPa | 145,000 psi | Diamond anvil low |
| 0.006895 MPa | 1 psi | 1 psi |
| 0.000133 MPa | 0.01929 psi | 1 mmHg |
| 0.09807 MPa | 14.22 psi | 1 kgf/cm² |
MPa × 145.04 = psi. Round to × 145.
Multiply MPa by 145 for quick psi estimates.
psi ÷ 145 = MPa.
Specifies concrete compressive strength (20–50 MPa) and steel yield strength (250–550 MPa).
Measures tensile strength, hardness, and fracture toughness in MPa.
Designs high-pressure hydraulic systems (20–35 MPa) for heavy machinery.
Calculates rock strength and in-situ stress states in MPa.
Specifies wellbore pressure, reservoir pressure, and fracture gradients in MPa.
Sets cutting pressure (200–600 MPa) for precision cutting applications.
The megapascal (MPa) equals 1,000,000 pascals (1,000 kPa) and is the standard unit for high-pressure engineering applications including hydraulics, structural materials, and industrial processes.
Steel has a tensile strength of about 400–550 MPa; concrete compressive strength is typically 20–40 MPa. Hydraulic systems in heavy machinery operate at 20–35 MPa. Water jet cutting uses pressures up to 600 MPa.
Interesting fact: The deepest point in the ocean (Mariana Trench, ~11,000 m) has a pressure of about 110 MPa — over 1,000 times atmospheric pressure.
PSI (pounds per square inch) is the primary pressure unit in the United States, UK, and other countries using Imperial measures. It equals the force of one pound-force applied over one square inch of area (6,894.76 Pa).
PSI is used for tire pressure (car: 30–35 psi, truck: 80–120 psi), blood pressure measurement in the US, boiler pressure ratings, and hydraulic system specifications in American engineering.
Interesting fact: The deepest ocean dive by a human (Victor Vescovo, 2019, 10,928 m) would have experienced about 15,900 psi of external pressure on the submersible hull.
Converting megapascal to psi is a common task in engineering, medicine, meteorology, and science. Different industries and countries use different pressure units — PSI in the US, bar in Europe, mmHg in medicine, and pascals in physics — making accurate conversion essential for cross-disciplinary work.
Quick reference: 5 MPa = 725.2 psi and 10 MPa = 1450 psi. For the reverse: 1 psi = 0.006895 MPa. The exact factor is 1 MPa = 145 psi.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.