Pound/sq inch to Megapascal Converter
Convert Pound/sq inch (psi) to Megapascal (MPa) instantly. 1 psi = 0.006895 MPa.
Pressure Converter
29 units available
1 psi = 0.006895 MPa
Formula:
MPa = psi × 0.0068947573With your value: 1 psi = 0.00689476 MPa
Other Pound/sq inch to Megapascal conversions
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 |
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 |
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.
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
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
How to Convert Pound/sq inch to Megapascal
To convert from Pound/sq inch (psi) to Megapascal (MPa), multiply the value by 0.0068947573.
Formula: MPa = psi × 0.0068947573
Reverse: psi = MPa × 145.0377377302
Step-by-Step Example
- Start with your value in Pound/sq inch. For example: 5 psi
- Multiply by the conversion factor: 5 x 0.0068947573
- The result is: 0.034474 MPa
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.
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.
Frequently Asked Questions
How many Megapascal are in 1 Pound/sq inch?
There are exactly 0.0068947573 Megapascal in 1 Pound/sq inch. This means the conversion factor from Pound/sq inch to Megapascal is 0.0068947573.
What is the formula to convert Pound/sq inch to Megapascal?
The formula to convert Pound/sq inch to Megapascal is: MPa = psi × 0.0068947573. For example, to convert 10 Pound/sq inch to Megapascal, you would multiply 10 by 0.0068947573.
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 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 are the common uses of Pound/sq inch?
The Pound/sq inch is commonly used in tire pressure (US), hydraulics, HVAC.
Related Pressure Conversions
Cite this page
UnitConvertLab. (2026). Pound/sq inch to Megapascal converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/psi-to-megapascal