Megapascal to Pound/sq inch Converter
Convert Megapascal (MPa) to Pound/sq inch (psi) instantly. 1 MPa = 145.037738 psi.
Pressure Converter
29 units available
1 MPa = 145.037738 psi
Formula:
psi = MPa × 145.0377377302With your value: 1 MPa = 145.03773773 psi
Other Megapascal to Pound/sq inch conversions
Megapascal to Pound/sq inch Conversion Table
| Megapascal (MPa) | Pound/sq inch (psi) |
|---|---|
| 0.5 | 72.518869 |
| 1 | 145.037738 |
| 2 | 290.075475 |
| 5 | 725.188689 |
| 10 | 1,450.377377 |
| 15 | 2,175.566066 |
| 20 | 2,900.754755 |
| 25 | 3,625.943443 |
| 50 | 7,251.886887 |
| 100 | 14,503.773773 |
| 250 | 36,259.434433 |
| 500 | 72,518.868865 |
| 1000 | 145,037.73773 |
Pound/sq inch to Megapascal Conversion Table
| Pound/sq inch (psi) | Megapascal (MPa) |
|---|---|
| 0.5 | 0.003447 |
| 1 | 0.006895 |
| 2 | 0.01379 |
| 5 | 0.034474 |
| 10 | 0.068948 |
| 15 | 0.103421 |
| 20 | 0.137895 |
| 25 | 0.172369 |
| 50 | 0.344738 |
| 100 | 0.689476 |
| 250 | 1.723689 |
| 500 | 3.447379 |
| 1000 | 6.894757 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Megapascal (MPa)
Pressure
Derived from the pascal (1 Pa = 1 N/m²). The standard atmosphere is exactly 101 325 Pa.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Pound/sq inch (psi)
Pressure
1 psi = 1 lbf/in² = 6894.757 293 168 361 Pa exactly.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Megapascal to Pound/sq inch
To convert from Megapascal (MPa) to Pound/sq inch (psi), multiply the value by 145.0377377302.
Formula: psi = MPa × 145.0377377302
Reverse: MPa = psi × 0.0068947573
Step-by-Step Example
- Start with your value in Megapascal. For example: 5 MPa
- Multiply by the conversion factor: 5 x 145.0377377302
- The result is: 725.188689 psi
About Megapascal
The megapascal (MPa) is a unit of pressure and stress. One megapascal equals 1.000000 × 10^+6 pascals. UnitConvertLab converts it against every other pressure unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: pressure calculations, engineering and science, education.
About Pound/sq inch
Pounds per square inch (psi) is an imperial unit of pressure widely used in the US for tire pressure, hydraulics, and engineering.
Common uses: tire pressure (US), hydraulics, HVAC.
Frequently Asked Questions
How many Pound/sq inch are in 1 Megapascal?
There are exactly 145.0377377302 Pound/sq inch in 1 Megapascal. This means the conversion factor from Megapascal to Pound/sq inch is 145.0377377302.
What is the formula to convert Megapascal to Pound/sq inch?
The formula to convert Megapascal to Pound/sq inch is: psi = MPa × 145.0377377302. For example, to convert 10 Megapascal to Pound/sq inch, you would multiply 10 by 145.0377377302.
What is a Megapascal?
The megapascal (MPa) is a unit of pressure and stress. One megapascal equals 1.000000 × 10^+6 pascals. UnitConvertLab converts it against every other pressure unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What is a Pound/sq inch?
Pounds per square inch (psi) is an imperial unit of pressure widely used in the US for tire pressure, hydraulics, and engineering.
What are the common uses of Megapascal?
The Megapascal is commonly used in pressure calculations, engineering and science, education.
Related Pressure Conversions
Cite this page
UnitConvertLab. (2026). Megapascal to Pound/sq inch converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/megapascal-to-psi