Pounds per square inch (psi) to Megapascals
Type a value in Pounds per square inch (psi) and get the result in Megapascals, calculated exactly.
1 Pounds per square inch (psi) ≈ 0.006894757293 Megapascals
Precision
Exact factorRounded for display to about 10 significant digits.
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Formula
MPa = psi × 0.006894757293
To convert Pounds per square inch (psi) to Megapascals, multiply the value by 0.006894757293.
Worked examples
- 1 psi × 0.006894757293 ≈ 0.006894757293 MPa
- 100 psi × 0.006894757293 ≈ 0.6894757293 MPa
- 50 psi × 0.006894757293 ≈ 0.3447378647 MPa
This factor is exact by definition.
Conversion table
| 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 |
Values marked ≈ are rounded; the rest are exact.
Reverse table: Megapascals to Pounds per square inch (psi)
| 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 |
Unit definitions
- Pounds per square inch (psi) psi
- One pound-force per square inch: about 6894.757 pascals, exact from the 1959 pound and inch.
- Megapascals MPa
- Exactly 1 000 000 pascals, used for material strength and hydraulics.
Questions people ask
Pounds per square inch (psi) to Megapascals: what is the conversion factor?
One psi is ≈ 0.006894757293 MPa.
How do I convert Pounds per square inch (psi) to Megapascals?
Use the formula above. For example, 100 psi = ≈ 0.6894757293 MPa.
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.