Megapascals to Pounds per Square Inch Converter
1 megapascal ≈ 145.037738 pounds per square inch
1 megapascal equals 145.038 pounds per square inch
How to convert megapascals to pounds per square inch
Unit conversion preserves the pressure reference. Gauge pressure and absolute pressure are different readings; changing between them also needs the ambient pressure. Mercury and water-column units use the conventions stated in their unit notes.
psi = MPa × 145.0377377One megapascal is 145.0377377 pounds per square inch, so a single multiplication converts any value.
1,450.38 psi ≈ 10 × 145.0377377Megapascals to pounds per square inch conversion table
Common values in megapascals, converted to pounds per square inch.
| Megapascals (MPa) | Pounds per square inch (psi) |
|---|---|
| 1 | 145.03774 |
| 2 | 290.07548 |
| 3 | 435.11321 |
| 4 | 580.15095 |
| 5 | 725.18869 |
| 10 | 1,450.3774 |
| 20 | 2,900.7548 |
| 25 | 3,625.9434 |
| 50 | 7,251.8869 |
| 100 | 14,503.774 |
| 250 | 36,259.434 |
| 500 | 72,518.869 |
| 1,000 | 145,037.74 |
About these units
megapascalMPa
One million pascals. Used for material strength and hydraulic systems.
pound per square inchpsi
One pound-force per square inch. The US standard for tyre and fluid pressure.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.