Megapascals to Pounds per square inch (psi)
Type a value in Megapascals and get the result in Pounds per square inch (psi), calculated exactly.
1 Megapascals ≈ 145.0377377 Pounds per square inch (psi)
Precision
Exact factorRounded for display to about 10 significant digits.
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Formula
psi = MPa × 145.03773773
To convert Megapascals to Pounds per square inch (psi), multiply the value by 145.03773773.
Worked examples
- 1 MPa × 145.03773773 ≈ 145.0377377 psi
- 100 MPa × 145.03773773 ≈ 14,503.77377 psi
- 50 MPa × 145.03773773 ≈ 7,251.886887 psi
This factor is exact by definition.
Conversion table
| Megapascals (MPa) | Pounds per square inch (psi) |
|---|---|
| 1 | ≈ 145.0377 |
| 2 | ≈ 290.0755 |
| 3 | ≈ 435.1132 |
| 4 | ≈ 580.151 |
| 5 | ≈ 725.1887 |
| 6 | ≈ 870.2264 |
| 7 | ≈ 1,015.264 |
| 8 | ≈ 1,160.302 |
| 9 | ≈ 1,305.34 |
| 10 | ≈ 1,450.377 |
| 15 | ≈ 2,175.566 |
| 20 | ≈ 2,900.755 |
| 25 | ≈ 3,625.943 |
| 30 | ≈ 4,351.132 |
| 40 | ≈ 5,801.51 |
| 50 | ≈ 7,251.887 |
| 60 | ≈ 8,702.264 |
| 70 | ≈ 10,152.64 |
| 75 | ≈ 10,877.83 |
| 80 | ≈ 11,603.02 |
| 90 | ≈ 13,053.4 |
| 100 | ≈ 14,503.77 |
Values marked ≈ are rounded; the rest are exact.
Reverse table: Pounds per square inch (psi) to Megapascals
| Pounds per square inch (psi) | Megapascals (MPa) |
|---|---|
| 1 | ≈ 0.006894757 |
| 2 | ≈ 0.01378951 |
| 3 | ≈ 0.02068427 |
| 4 | ≈ 0.02757903 |
| 5 | ≈ 0.03447379 |
| 6 | ≈ 0.04136854 |
| 7 | ≈ 0.0482633 |
| 8 | ≈ 0.05515806 |
| 9 | ≈ 0.06205282 |
| 10 | ≈ 0.06894757 |
| 15 | ≈ 0.1034214 |
| 20 | ≈ 0.1378951 |
| 25 | ≈ 0.1723689 |
| 30 | ≈ 0.2068427 |
| 40 | ≈ 0.2757903 |
| 50 | ≈ 0.3447379 |
| 60 | ≈ 0.4136854 |
| 70 | ≈ 0.482633 |
| 75 | ≈ 0.5171068 |
| 80 | ≈ 0.5515806 |
| 90 | ≈ 0.6205282 |
| 100 | ≈ 0.6894757 |
Unit definitions
- Megapascals MPa
- Exactly 1 000 000 pascals, used for material strength and hydraulics.
- Pounds per square inch (psi) psi
- One pound-force per square inch: about 6894.757 pascals, exact from the 1959 pound and inch.
Questions people ask
Megapascals to Pounds per square inch (psi): what is the conversion factor?
One MPa is ≈ 145.0377377 psi.
How do I convert Megapascals to Pounds per square inch (psi)?
Use the formula above. For example, 100 MPa = ≈ 14,503.77377 psi.
Is the conversion exact?
Yes. Both units have exact definitions, so the factor is exact; a result is only rounded when its decimals never end.
Factors checked 19 October 2026.