Convert megapascals to psi

1 MPa=145.038psi

Use the converter below to change any megapascals value into psi instantly — with formula, conversion table, and real-world examples.

You have

Equals

145.0377

Conversion formula

Forward

psi = megapascals × 145.038

Reverse

megapascals = psi × 0.006895

Example: 10 MPa × 145.038 = 1,450.38 psi.

About both units

From

Megapascal

MPa

The megapascal equals 1,000,000 pascals or 10 bar. Used for high-pressure engineering — hydraulic systems, material strength, concrete compression tests. 1 MPa is roughly the pressure of a 100-tonne weight on 1 m².

Real-world: Concrete compressive strength: 20–60 MPa. Hydraulic press: 30–70 MPa. Steel yield strength: 250+ MPa.

Read full megapascal reference →

Pound per Square Inch

psi

Pounds per square inch equals approximately 6895 Pa. It is the dominant pressure unit in the US — tyre pressures, plumbing, compressed air. Standard US tyre pressure: 32–35 psi.

Real-world: US tyre: 32–35 psi. Water supply: 40–60 psi. SCUBA tank: 3000 psi. Car AC system: 30–200 psi.

Read full pound per square inch reference →

Megapascal to Pound per Square Inch conversion table

Common megapascals to psi values for quick reference.

Megapascal (MPa)	Pound per Square Inch (psi)
1 MPa	145.038 psi
5 MPa	725.189 psi
10 MPa	1,450.38 psi
25 MPa	3,625.94 psi
50 MPa	7,251.89 psi
100 MPa	14,503.77 psi
200 MPa	29,007.55 psi
500 MPa	72,518.87 psi
1,000 MPa	145,037.74 psi
5,000 MPa	725,188.69 psi

Tips & common mistakes

Quick tips

1 MPa = 10 bar = 145 psi.
N/mm² = MPa (same unit, different notation).
Use MPa for material science; bar for fluid dynamics.

Avoid these

Confusing MPa with MW or MJ.
Using 1 MPa = 100 bar — that's incorrect; it's 10 bar.
Mixing MPa and kPa without conversion in mixed docs.

Frequently asked questions

How many psi in a megapascal?

One megapascal equals 145.038 psi.

How do I convert megapascals to psi?

Multiply the megapascal value by 145.038 to get the equivalent in psi.

What is 100 megapascals in psi?

100 megapascals equals 14,503.77 psi.

Is a megapascal bigger than a pound per square inch?

Yes. 1 megapascal equals 145.038 psi, so one megapascal is larger.

How to convert megapascals to psi without a calculator?

Multiply by 145.04 for a quick estimate; use a calculator for precise results.

Related pressure conversions

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