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Pressure

PSI → Megapascals

psi → MPa

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NIST Exact

Based on U.S. National Institute of Standards

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PSI to Megapascals Formula

To convert from PSI to Megapascals, you can use the following formula:

Megapascals = PSI × NaN

This means you need to multiply your PSI value by NaN to get the equivalent value in Megapascals.

psi → MPa Reference Table

psi MPa
0.001 psi 0.000006894757293 MPa
0.002 psi 0.00001378951459 MPa
0.003 psi 0.00002068427188 MPa
0.004 psi 0.00002757902917 MPa
0.005 psi 0.00003447378647 MPa
0.006 psi 0.00004136854376 MPa
0.007 psi 0.00004826330105 MPa
0.008 psi 0.00005515805835 MPa
0.009 psi 0.00006205281564 MPa
0.01 psi 0.00006894757293 MPa
0.02 psi 0.0001378951459 MPa
0.03 psi 0.0002068427188 MPa
0.04 psi 0.0002757902917 MPa
0.05 psi 0.0003447378647 MPa
0.06 psi 0.0004136854376 MPa
0.07 psi 0.0004826330105 MPa
0.08 psi 0.0005515805835 MPa
0.09 psi 0.0006205281564 MPa
0.1 psi 0.0006894757293 MPa
0.2 psi 0.001378951459 MPa
0.3 psi 0.002068427188 MPa
0.4 psi 0.002757902917 MPa
0.5 psi 0.003447378647 MPa
0.6 psi 0.004136854376 MPa
0.7 psi 0.004826330105 MPa
0.8 psi 0.005515805835 MPa
0.9 psi 0.006205281564 MPa
1 psi 0.006894757293 MPa
1.5 psi 0.01034213594 MPa
2 psi 0.01378951459 MPa
2.5 psi 0.01723689323 MPa
3 psi 0.02068427188 MPa
3.5 psi 0.02413165053 MPa
4 psi 0.02757902917 MPa
4.5 psi 0.03102640782 MPa
5 psi 0.03447378647 MPa
5.5 psi 0.03792116511 MPa
6 psi 0.04136854376 MPa
6.5 psi 0.04481592241 MPa
7 psi 0.04826330105 MPa
7.5 psi 0.0517106797 MPa
8 psi 0.05515805835 MPa
8.5 psi 0.05860543699 MPa
9 psi 0.06205281564 MPa
9.5 psi 0.06550019429 MPa
10 psi 0.06894757293 MPa
11 psi 0.07584233022 MPa
12 psi 0.08273708752 MPa
13 psi 0.08963184481 MPa
14 psi 0.0965266021 MPa
15 psi 0.1034213594 MPa
16 psi 0.1103161167 MPa
17 psi 0.117210874 MPa
18 psi 0.1241056313 MPa
19 psi 0.1310003886 MPa
20 psi 0.1378951459 MPa
25 psi 0.1723689323 MPa
30 psi 0.2068427188 MPa
35 psi 0.2413165053 MPa
40 psi 0.2757902917 MPa
45 psi 0.3102640782 MPa
50 psi 0.3447378647 MPa
55 psi 0.3792116511 MPa
60 psi 0.4136854376 MPa
65 psi 0.4481592241 MPa
70 psi 0.4826330105 MPa
75 psi 0.517106797 MPa
80 psi 0.5515805835 MPa
85 psi 0.5860543699 MPa
90 psi 0.6205281564 MPa
95 psi 0.6550019429 MPa
100 psi 0.6894757293 MPa
120 psi 0.8273708752 MPa
125 psi 0.8618446616 MPa
130 psi 0.8963184481 MPa
140 psi 0.965266021 MPa
150 psi 1.034213594 MPa
160 psi 1.103161167 MPa
175 psi 1.206582526 MPa
180 psi 1.241056313 MPa
200 psi 1.378951459 MPa
225 psi 1.551320391 MPa
250 psi 1.723689323 MPa
275 psi 1.896058256 MPa
300 psi 2.068427188 MPa
350 psi 2.413165053 MPa
400 psi 2.757902917 MPa
450 psi 3.102640782 MPa
500 psi 3.447378647 MPa
600 psi 4.136854376 MPa
700 psi 4.826330105 MPa
750 psi 5.17106797 MPa
800 psi 5.515805835 MPa
900 psi 6.205281564 MPa
1000 psi 6.894757293 MPa
1200 psi 8.273708752 MPa
1250 psi 8.618446616 MPa
1500 psi 10.34213594 MPa
1750 psi 12.06582526 MPa
2000 psi 13.78951459 MPa
2500 psi 17.23689323 MPa
3000 psi 20.68427188 MPa
4000 psi 27.57902917 MPa
4500 psi 31.02640782 MPa
5000 psi 34.47378647 MPa
6000 psi 41.36854376 MPa
7000 psi 48.26330105 MPa
7500 psi 51.7106797 MPa
8000 psi 55.15805835 MPa
9000 psi 62.05281564 MPa
10000 psi 68.94757293 MPa
15000 psi 103.4213594 MPa
20000 psi 137.8951459 MPa
25000 psi 172.3689323 MPa
50000 psi 344.7378647 MPa
75000 psi 517.106797 MPa
100000 psi 689.4757293 MPa

Why Convert PSI to Megapascals?

Converting between psi (psi) and megapascals (MPa) is one of the most common pressure conversions. Whether for engineering, cooking, travel, or science, knowing how to quickly convert psi to MPa saves time and prevents errors.

Pressure conversions between psi and MPa are vital in automotive maintenance, meteorology, and scuba diving. Tire pressure affects fuel efficiency and safety, requiring drivers to convert between PSI and bar depending on the gauge used. Divers must strictly monitor pressure to avoid decompression sickness, often needing to convert depth and tank pressure readings. In weather forecasting, atmospheric pressure changes indicate approaching storms, with data often shared in different units globally. Failing to convert pressure accurately can lead to equipment failure, tire blowouts, or life-threatening situations underwater.

How to Convert PSI to Megapascals

To convert psi to megapascals, use the following formula:

MPa = psi × 0.006894757293

Example: 1 psi = 0.006894757293 MPa

For example, 5 psi = 0.03447378647 MPa, 10 psi = 0.06894757293 MPa, and 100 psi = 0.6894757293 MPa. For larger values, 1000 psi = 6.894757293 MPa. Conversely, 1 MPa = 145.0377377 psi. Our calculator above performs this conversion instantly with full precision — no rounding errors.

Common Mistakes to Avoid

  • Gauge vs Absolute: confusing gauge pressure (psig) with absolute pressure (psia).
  • Bar vs Pascal: 1 Bar is 100,000 Pascals, not 10 or 100.
  • Atmosphere variations: confusing standard atm with technical atm.

Pro Tips

  • Tire checks: Check tire pressure when cold (tires heat up and pressure rises while driving).
  • PSI rule: Typical car tires are 30-35 PSI.
  • Altitude effect: Air pressure drops as you go higher (ears popping).

What is a PSI?

PSI (Pounds per Square Inch) is a unit of pressure in the Imperial and US customary systems. It represents the force of one pound-force applied to an area of one square inch.

PSI is the standard unit for tire pressure, industrial hydraulics, and compressed gas systems in the United States and UK.

What is a Megapascal?

A unit of pressure equal to 1,000,000 Pascals.

Used in engineering for material strength.

Frequently Asked Questions

Pressure More Conversions

bar → psipsi → baratm → PaPa → atmbar → atmatm → bar

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