MPa to PSI Pressure Converter

What Is the MPa to PSI Converter?

The MPa to PSI Converter converts megapascals (MPa) to pounds per square inch (psi) and back in real time. MPa is the SI unit for pressure used in engineering and materials testing, while psi is the imperial unit common in the United States for hydraulics, tires, and industrial equipment.

Conversion Formula

To convert MPa to psi:

$$\text{psi} = \text{MPa} \times 145.038$$

To convert psi to MPa:

$$\text{MPa} = \frac{\text{psi}}{145.038}$$

This factor comes from $1\ \text{psi} = 6894.757\ \text{Pa}$ and $1\ \text{MPa} = 1{,}000{,}000\ \text{Pa}$, giving $1\ \text{MPa} \approx 145.038\ \text{psi}$.

Example Calculations

Example 1: Convert 2 MPa to psi: $$\text{psi} = 2 \times 145.038 = 290.076\ \text{psi}$$

Example 2: Convert 3000 psi to MPa: $$\text{MPa} = \frac{3000}{145.038} \approx 20.683\ \text{MPa}$$

Quick Reference

MPa	psi	Typical Use
0.689	100	Moderate hydraulic line
1	145.04	General reference
20.68	3000	Scuba tank pressure
34.47	5000	High-pressure hydraulic

Frequently Asked Questions

How many psi is 1 MPa?

1 MPa equals approximately 145.038 psi. Enter 1 in the MPa field to see the exact converted value instantly.

How do I convert MPa to psi?

Multiply the MPa value by 145.038. For example, 5 MPa equals about 725.19 psi. Type in either field and the other updates automatically.

How do I convert psi to MPa?

Divide psi by 145.038. For example, 145.038 psi equals 1 MPa. Enter the psi value in the pounds per square inch field for instant conversion.

Is MPa larger than psi?

Yes. One MPa is much larger than one psi. It takes about 145 psi to equal just 1 MPa, because MPa measures pressure in millions of pascals.

What is the difference between psi and psig?

PSI is absolute pressure measured from a perfect vacuum. PSIG is gauge pressure measured relative to atmospheric pressure. Use our MPa to PSIG Converter for gauge pressure conversions.

What pressure is 30 MPa in psi?

30 MPa equals about 4351.14 psi. This level of pressure is common for high-strength concrete and heavy-duty hydraulic systems.

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MPA to PSI Converter

What Is the MPa to PSI Converter?

Conversion Formula

Example Calculations

Quick Reference

Frequently Asked Questions

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