pound per square inch [psi] to megapascal [MPa] Converter

Quick Reference

1 pound per square inch (psi) = 0.00689476 megapascal (MPa)

1 megapascal (MPa) = 145.0376808 pound per square inch (psi)

How to Convert pound per square inch to megapascal

1 psi = 0.006894760000450141 MPa
1 MPa = 145.03768078 psi

To convert pound per square inch to megapascal, divide the value by 145.0376808 (equivalently, multiply by 0.00689476). To convert megapascal back to pound per square inch, multiply by 145.0376808.

Example: convert 10 psi to MPa:
10 psi = 10 x 0.006894760000450141 = 0.06894760000450141 MPa

↔ Convert megapascal to pound per square inch

pound per square inch

Definition: Pound per square inch (symbol: psi or lbf/in²) is a unit of pressure in the imperial and US customary systems. It is defined as the pressure resulting from a force of one pound-force applied to an area of one square inch.

History/origin: The pound per square inch is rooted in the English system of units. Its widespread use grew with the development of steam engines and other technologies requiring pressure measurements.

Current use: psi is commonly used in the United States for measuring tire pressure, hydraulic pressure, steam pressure, and the pressure of compressed gases. It's prevalent in automotive, manufacturing, and various engineering applications.

megapascal

Definition: The megapascal (symbol: MPa) is a multiple of the pascal, which is the SI unit of pressure and stress. One MPa is equal to 1,000,000 pascals.

History/origin: Like the pascal, the megapascal's origin is tied to the development of SI units. It provides a more convenient scale for expressing large pressures.

Current use: Megapascals are frequently used in engineering, especially in the fields of material science, structural engineering, and geomechanics, for measuring the strength of materials, stresses in structures, and pressures in geological formations.

pound per square inch to megapascal Conversion Table

pound per square inch [psi]	megapascal [MPa]
1 psi	0.006894760000450141 MPa
2 psi	0.013789520000900281 MPa
5 psi	0.0344738000022507 MPa
10 psi	0.0689476000045014 MPa
20 psi	0.1378952000090028 MPa
50 psi	0.34473800002250704 MPa
100 psi	0.6894760000450141 MPa
200 psi	1.3789520000900282 MPa
500 psi	3.44738000022507 MPa
1000 psi	6.89476000045014 MPa

Common pairs of Pressure

pascal

pascal to kilopascal pascal to megapascal pascal to hectopascal pascal to bar pascal to torr

kilopascal

kilopascal to pascal kilopascal to megapascal kilopascal to hectopascal kilopascal to bar kilopascal to torr

megapascal

megapascal to pascal megapascal to kilopascal megapascal to hectopascal megapascal to bar megapascal to torr

hectopascal

hectopascal to pascal hectopascal to kilopascal hectopascal to megapascal hectopascal to bar hectopascal to torr

bar

bar to pascal bar to kilopascal bar to megapascal bar to hectopascal bar to torr

torr

torr to pascal torr to kilopascal torr to megapascal torr to hectopascal torr to bar

pound per square inch

pound per square inch to pascal pound per square inch to kilopascal pound per square inch to megapascal pound per square inch to hectopascal pound per square inch to bar

kilopound per square inch

kilopound per square inch to pascal kilopound per square inch to kilopascal kilopound per square inch to megapascal kilopound per square inch to hectopascal kilopound per square inch to bar

pound per square inch [psi] to megapascal [MPa] Converter

To convert pound per square inch to megapascal, enter your value in the psi field above and the result in MPa will appear instantly. You can also use the conversion factor shown in the table on this page to calculate manually. The formula is always the same: multiply your psi value by the fixed conversion ratio to get the equivalent in MPa.

Our pound per square inch to megapascal converter uses standardized conversion factors defined by international scientific and metrological organizations. All calculations are performed with full floating-point precision. You can also choose how many decimal places to display in the result, so you get exactly the level of detail you need.

Yes, absolutely. Simply swap the source and destination units in the converter — select MPa as your input unit and psi as your output unit. The same precision and standardized conversion factor applies in both directions.

Converting between pound per square inch and megapascal comes up regularly in engineering, scientific research, construction, and everyday tasks that involve measurements from different unit systems. Our converter eliminates the risk of manual calculation errors and saves time whenever you need to switch between these two units.

Yes, the pound per square inch to megapascal converter is completely free. No account or registration is required, and there are no usage limits. It works on any device — smartphones, tablets, and desktop computers — directly in your browser.

pound per square inch and megapascal are both units used to measure the same physical quantity, but they belong to different measurement systems or represent different scales. The mathematical relationship between them is fixed and constant, which is what makes accurate conversion possible. Scroll up to see the exact conversion factor, formula, and a reference table for common values.

pound per square inch [psi] to megapascal [MPa] Converter

Quick Reference

1 pound per square inch (psi) = 0.00689476 megapascal (MPa)

1 megapascal (MPa) = 145.0376808 pound per square inch (psi)

How to Convert pound per square inch to megapascal

1 psi = 0.006894760000450141 MPa
1 MPa = 145.03768078 psi

To convert pound per square inch to megapascal, divide the value by 145.0376808 (equivalently, multiply by 0.00689476). To convert megapascal back to pound per square inch, multiply by 145.0376808.

Example: convert 10 psi to MPa:
10 psi = 10 x 0.006894760000450141 = 0.06894760000450141 MPa

↔ Convert megapascal to pound per square inch

pound per square inch

megapascal

Definition: The megapascal (symbol: MPa) is a multiple of the pascal, which is the SI unit of pressure and stress. One MPa is equal to 1,000,000 pascals.

History/origin: Like the pascal, the megapascal's origin is tied to the development of SI units. It provides a more convenient scale for expressing large pressures.

pound per square inch to megapascal Conversion Table

pound per square inch [psi]	megapascal [MPa]
1 psi	0.006894760000450141 MPa
2 psi	0.013789520000900281 MPa
5 psi	0.0344738000022507 MPa
10 psi	0.0689476000045014 MPa
20 psi	0.1378952000090028 MPa
50 psi	0.34473800002250704 MPa
100 psi	0.6894760000450141 MPa
200 psi	1.3789520000900282 MPa
500 psi	3.44738000022507 MPa
1000 psi	6.89476000045014 MPa

Common pairs of Pressure

pascal

pascal to kilopascal pascal to megapascal pascal to hectopascal pascal to bar pascal to torr

kilopascal

kilopascal to pascal kilopascal to megapascal kilopascal to hectopascal kilopascal to bar kilopascal to torr

megapascal

megapascal to pascal megapascal to kilopascal megapascal to hectopascal megapascal to bar megapascal to torr

hectopascal

hectopascal to pascal hectopascal to kilopascal hectopascal to megapascal hectopascal to bar hectopascal to torr

bar

bar to pascal bar to kilopascal bar to megapascal bar to hectopascal bar to torr

torr

torr to pascal torr to kilopascal torr to megapascal torr to hectopascal torr to bar

pound per square inch

pound per square inch to pascal pound per square inch to kilopascal pound per square inch to megapascal pound per square inch to hectopascal pound per square inch to bar

kilopound per square inch

kilopound per square inch to pascal kilopound per square inch to kilopascal kilopound per square inch to megapascal kilopound per square inch to hectopascal kilopound per square inch to bar