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Free Megapascals to PSI Converter

Convert megapascals (MPa) to pounds per square inch (psi) — the high-pressure unit used for material strength, hydraulics, and equipment ratings.

1 MPa = 145.038 psi

Pick any units and edit either box — it converts instantly in your browser.

Quick answer

To convert MPa to psi, multiply by 145.038, because 1 MPa equals 1,000,000 pascals. For example, 10 MPa is about 1,450 psi.

Formula & method

psi = megapascals × 145.0377377302
  • MPa — value in megapascals
  • psi — result in psi
  • 145.0377377302 — exact conversion factor (1 MPa = 145.0377377302 psi)

To convert back, divide by 145.0377377302 (1 psi = 0.006895 MPa).

Megapascals to PSI — common values

Megapascals (MPa)PSI (psi)
0.1 MPa14.504 psi
0.5 MPa72.519 psi
1 MPa145.038 psi
2 MPa290.075 psi
5 MPa725.189 psi
10 MPa1,450.377 psi
20 MPa2,900.755 psi
50 MPa7,251.887 psi

Examples

Example 1: One megapascal
Input
1 MPa
Result
145.038 psi
Why
1 MPa ≈ 145 psi (also = 10 bar).
Example 2: Hydraulics
Input
10 MPa
Result
1,450.377 psi
Why
10 MPa ≈ 1,450 psi.
Example 3: Lower range
Input
0.5 MPa
Result
72.519 psi
Why
0.5 MPa ≈ 72.5 psi.
Example 4: High pressure
Input
50 MPa
Result
7,251.887 psi
Why
50 MPa ≈ 7,252 psi.

Common mistakes

  • Rounding too early. Multiply by the full factor (145.0377377302) first, then round only the final psi value.
  • Converting the wrong way. This page goes Megapascals → PSI; to go back, divide by 145.0377377302.

Frequently asked questions

What is the MPa to psi factor?

1 MPa = 145.0377 psi, since 1 MPa = 1,000,000 Pa and 1 psi = 6,894.76 Pa.

How does MPa relate to bar?

1 MPa = 10 bar, so megapascals are a convenient unit for high pressures.

Where is MPa used?

Material tensile/yield strength, concrete strength, hydraulic systems, and pressure-vessel ratings.

How many psi is 10 MPa?

About 1,450 psi.

Is MPa an SI unit?

The pascal (Pa) is the SI unit of pressure; MPa is just one million pascals.

Sources & references

External references open in a new tab. We are independent and not affiliated with these organizations.

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Provided “as is” for general information only — results may be inaccurate, so verify before you rely on them. No warranty; use at your own risk.

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