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Pressure
Megapascals to Psi
Convert megapascals (MPa) to psi (psi). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 MPa = 145.04 psi
Megapascals to Psi Conversion Table
Common values, ready to copy:
| megapascals | psi |
|---|---|
| 1 MPa | 145.04 psi |
| 2 MPa | 290.08 psi |
| 5 MPa | 725.19 psi |
| 10 MPa | 1450.38 psi |
| 25 MPa | 3625.94 psi |
| 50 MPa | 7251.88 psi |
| 100 MPa | 14503.77 psi |
| 1,000 MPa | 145037.68 psi |
Formula
psi = megapascals × 1.45037681e+2
Pressure is force per area. 1 atm = 101.325 kPa = 14.696 psi = 760 mmHg. Bar is a metric working unit close to atmospheric pressure (1 bar = 100 kPa).
About Megapascals and Psi
Megapascals (MPa): A million pascals, or 10 bar; the unit for high-pressure engineering contexts. Common uses: Concrete and steel strength specifications, hydraulic systems, deep-water pressures, and some industrial process measurements.
Psi (psi): Pounds-force per square inch, the customary US pressure unit; 1 psi = 6,894.76 Pa. Common uses: US tire pressure (car tires typically 30-35 psi), US gas grills (10-12 psi propane), industrial hydraulics in the US, and US plumbing pressure specifications.
How the conversion works
Pressure is force per area. 1 atm = 101.325 kPa = 14.696 psi = 760 mmHg. Bar is a metric working unit close to atmospheric pressure (1 bar = 100 kPa).
The exact relationship is psi = megapascals × 1.45037681e+2, which the calculator at the top of this page applies in both directions. Type into either field and the other updates immediately.
When this conversion matters
Converting between megapascals and psi comes up wherever pressure measurements move between systems — from one country's conventions to another's, from a scientific reference to a practical specification, or from one industry's working unit to another's. The calculator and reference table above cover the everyday range; for unusual values you can type any number into either field.