Pounds Per Square Inch to Megapascals (psi to MPa) Converter

Pounds Per Square Inch to Megapascals

1 pound per square inch = 0.006894757293 megapascals. To convert pounds per square inch (psi) to megapascals (MPa), multiply by 0.006894757293.

Pounds per square inch (psi)

⇄

Megapascals (MPa)

How to convert pounds per square inch to megapascals

MPa = psi × 0.006894757293

Example: convert 8 pounds per square inch to megapascals.
8 psi × 0.006894757293 = 0.05515805835 MPa

The same relationship in reverse: 1 megapascal = 145.0377377 pounds per square inch, so you can also divide by 145.0377377. Need the other direction? Use the megapascals to pounds per square inch converter.

You will typically need this conversion for material strength and hydraulic systems.

Pounds Per Square Inch to Megapascals conversion chart

Pounds Per Square Inch (psi)	Megapascals (MPa)
1 psi	0.0068947573 MPa
2 psi	0.013789515 MPa
3 psi	0.020684272 MPa
4 psi	0.027579029 MPa
5 psi	0.034473786 MPa
6 psi	0.041368544 MPa
7 psi	0.048263301 MPa
8 psi	0.055158058 MPa
9 psi	0.062052816 MPa
10 psi	0.068947573 MPa
15 psi	0.10342136 MPa
20 psi	0.13789515 MPa
25 psi	0.17236893 MPa
30 psi	0.20684272 MPa
40 psi	0.27579029 MPa
50 psi	0.34473786 MPa
75 psi	0.5171068 MPa
100 psi	0.68947573 MPa
250 psi	1.7236893 MPa
500 psi	3.4473786 MPa
1,000 psi	6.8947573 MPa

Values rounded to 8 significant figures. The converter above shows up to 12.

About the units

Pound Per Square Inch (psi)

The pressure of one pound-force on one square inch, about 6,895 Pa. Used for tires and compressors in the US.

Megapascal (MPa)

1,000,000 Pa, equal to 1 N/mm². Used for concrete and steel strength.

Frequently asked questions

How many megapascals are in a pound per square inch?

1 pound per square inch = 0.006894757293 megapascals. Going the other way, 1 megapascal = 145.0377377 pounds per square inch.

How do I convert pounds per square inch to megapascals?

To convert pounds per square inch to megapascals, multiply by 0.006894757293. The formula is MPa = psi × 0.006894757293.

What is 8 psi in MPa?

8 pounds per square inch is 0.05515805835 megapascals (8 psi × 0.006894757293 = 0.05515805835 MPa).