How to convert psi to bar? For all other types of unit conversions for air compressors, we offer a free and easy to use online tool that explains the standards and details.

Convert psi to bar tool

Pressure
PSI ↔ Bar

Power
kW ↔ HP

Flow Rate
m³/min ↔ CFM

Convert psi to bar

1 bar ≈ 14.5 psi (Crucial for comparing specs or using equipment from different regions).

Compared to using a parameter table, Elang’s unit conversion tool is more convenient and quick to get the answer when converting psi to bar.

What is psi?

Imperial/US Customary unit of pressure. 1 psi is actually the pressure generated by applying 1 pound of force to an area of 1 square inch. Dominant in North America.

Critical for system design, safety, and matching air compressor output to application needs. Must know if working with equipment or standards from regions using imperial units.

As a commonly used unit of pressure measurement that can be provided or required by equipment and pipelines, pressure psi can be converted to bar. Usually, one of the parameters may be used to calculate the other, but using a complex parameter correspondence table will delay time, so it is more convenient to use pressure psi to convert bar and other units of conversion tools.

What is bar?

Metric unit of pressure. 1 bar is approximately equal to atmospheric pressure at sea level. Widely used globally (especially outside North America).

Crucial for specifying:

Working Pressure: The rated output pressure at which the air compressor is designed (e.g. 7 bar, 10 bar, 13 bar).

Maximum Working Pressure (MWP): The upper limit of the safe working pressure of the components of the storage and transfer system (tanks, pipes, hoses).

Tool/Equipment Requirements: Ensures the air compressor can provide sufficient pressure for air tools or processes.

Convert Bar to Psi Table

Common conversions Conversion results
0.1 bar to psi 0.1 bar = 1.4504 psi
0.14 bar to psi 0.14 bar = 2.0305 psi
0.15 bar to psi 0.15 bar = 2.1756 psi
0.2 bar in psi 0.2 bar = 2.9008 psi
0.25 bar to psi 0.25 bar = 3.6260 psi
0.3 bar to psi 0.3 bar = 4.3511 psi
0.35 bar to psi 0.35 bar = 5.0763 psi
0.4 bar to psi 0.4 bar = 5.8015 psi
0.45 bar to psi 0.45 bar = 6.5267 psi
0.5 bar in psi 0.5 bar = 7.2519 psi
0.6 bar to psi 0.6 bar = 8.7023 psi
0.7 bar to psi 0.7 bar = 10.1527 psi
0.75 bar to psi 0.75 bar = 10.8779 psi
0.8 bar to psi 0.8 bar = 11.6030 psi
0.9 bar in psi 0.9 bar = 13.0534 psi
1 bar to psi 1 bar = 14.5038 psi
1.1 bar to psi 1.1 bar = 15.9542 psi
1.2 bar to psi 1.2 bar = 17.4046 psi
1.3 bar to psi 1.3 bar = 18.8549 psi
1.4 bar to psi 1.4 bar = 20.3053 psi
1.5 bar to psi 1.5 bar = 21.7557 psi
1.6 bar to psi 1.6 bar = 23.2061 psi
1.7 bar to psi 1.7 bar = 24.6565 psi
1.8 bar to psi 1.8 bar = 26.1068 psi
1.9 bar to psi 1.9 bar = 27.5572 psi
2.0 bar to psi 2 bar = 29.0076 psi
2.1 bar to psi 2.1 bar = 30.4580 psi
2.2 bar to psi 2.2 bar = 31.9084 psi
2.3 bar to psi 2.3 bar = 33.3587 psi
2.4 bar to psi 2.4 bar = 34.8091 psi
2.5 bar to psi 2.5 bar = 36.2595 psi
2.6 bar to psi 2.6 bar = 37.7099 psi
2.7 bar to psi 2.7 bar = 39.1603 psi
2.8 bar to psi 2.8 bar = 40.6106 psi
2.9 bar to psi 2.9 bar = 42.0610 psi
3 bar to psi 3 bar = 43.5114 psi
4 bar to psi 4 bar = 58.0152 psi
5 psi to bar 5 psi = 0.3447 bar
5.5 bar in psi 5.5 bar = 79.7709 psi
6 bar to psi 6 bar = 87.0228 psi
7 bar to psi 7 bar = 101.5266 psi
8 bar to psi 8 bar = 116.0304 psi
9 bar to psi 9 bar = 130.5342 psi
10 bar to psi 10 bar = 145.0380 psi
15 bar to psi 15 bar = 217.5570 psi
20 bar to psi 20 bar = 290.0760 psi
25 bar to psi 25 bar = 362.5950 psi
30 bar to psi 30 bar = 435.1140 psi
35 bar to psi 35 bar = 507.6330 psi
40 bar to psi 40 bar = 580.1520 psi
45 bar to psi 45 bar = 652.6710 psi
50 bar to psi 50 bar = 725.1900 psi
55 bar to psi 55 bar = 797.7090 psi
60 bar to psi 60 bar = 870.2280 psi
70 bar to psi 70 bar = 1015.2660 psi
80 bar to psi 80 bar = 1160.3040 psi
90 bar to psi 90 bar = 1305.3420 psi
100 bar to psi 100 bar = 1450.3800 psi
200 bar to psi 200 bar = 2900.7600 psi
300 bar to psi 300 bar = 4351.1400 psi
400 bar to psi 400 bar = 5801.5200 psi
500 bar to psi 500 bar = 7251.9000 psi
600 bar to psi 600 bar = 8702.2800 psi
700 bar to psi 700 bar = 10152.6600 psi
800 bar to psi 800 bar = 11603.0400 psi
900 bar to psi 900 bar = 13053.4200 psi
1000 bar to psi 1000 bar = 14503.8000 psi

Convert Psi to Bar Table

Common conversions Conversion results
10 psi to bar 0.6895 bar
20 psi to bar 1.3790 bar
30 psi to bar 2.0684 bar
35 psi to bar 2.4132 bar
40 psi to bar 2.7579 bar
50 psi to bar 3.4474 bar
60 psi to bar 4.1369 bar
70 psi to bar 4.8263 bar
80 psi to bar 5.5158 bar
90 psi to bar 6.2053 bar
100 psi to bar 6.8948 bar
110 psi to bar 7.5842 bar
120 psi to bar 8.2737 bar
130 psi to bar 8.9632 bar
140 psi to bar 9.6527 bar
150 psi to bar 10.3422 bar
160 psi to bar 11.0316 bar
170 psi to bar 11.7211 bar
180 psi to bar 12.4106 bar
190 psi to bar 13.1001 bar
200 psi to bar 13.7895 bar
210 psi to bar 14.4790 bar
220 psi to bar 15.1685 bar
230 psi to bar 15.8580 bar
240 psi to bar 16.5474 bar
250 psi to bar 17.2369 bar
260 psi to bar 17.9264 bar
270 psi to bar 18.6159 bar
280 psi to bar 19.3054 bar
290 psi to bar 19.9948 bar
300 psi to bar 20.6843 bar
400 psi to bar 27.5790 bar
500 psi to bar 34.4738 bar
600 psi to bar 41.3685 bar
700 psi to bar 48.2633 bar
800 psi to bar 55.1581 bar
900 psi to bar 62.0528 bar
1000 psi to bar 68.9476 bar
2000 psi to bar 137.8952 bar
3000 psi to bar 206.8428 bar

What is cfm?

A unit of volumetric flow. Imperial/U.S. customary units measuring the volume of air delivered by a air compressor per minute, which can usually be referenced to standard atmospheric conditions (e.g., 14.5 psia, 68°F, 0% RH).

KEY DIFFERENCE: FAD cfm (Free Air Delivery) is the actual useful flow rate delivered by the compressor at rated pressure.

What is m³/min?

Metric unit of volume flow. Mainly used to measure the volume of air delivered per minute under standard conditions (e.g. 1 bar(a), 20°C, 0% RH).

Conversion: 1 m³/min ≈ 35.3 cfm

Key Takeaways & Importance Summary

Pressure (bar/psi): Dictates whether the air compressor can overcome the resistance in your system and power your tools/processes. Exceeding MWP is dangerous. Understanding the conversion of psi to bar is an essential step in understanding mechanical parameters and selecting products.

Flow Rate (FAD cfm / FAD m³/min): Determines if the air compressor can supply the volume of air needed to keep all tools/processes running simultaneously without excessive pressure drop. Undersizing causes operational problems.

Power (kW): Directly determines your electricity consumption and operating costs. The most accurate unit for comparing energy efficiency and calculating TCO (Total Cost of Ownership). Be skeptical of hp ratings.

FAD is King: For flow rate, ALWAYS use or specify Free Air Delivery (FAD) measured according to ISO 1217 (or equivalent like CAGI/Pneurop). This is the only meaningful flow rate figure for sizing your system. Disregard theoretical, displaced, or inlet CFM/m³/min for sizing purposes.

Standards Matter: ISO 1217 is the internationally recognized standard for testing and declaring air compressor performance (flow rate, power consumption, specific power). Adherence ensures accurate, comparable specifications between manufacturers. Safety standards (ISO 5390, EN 1012, ASME B19.3) are critical for system design and operation.

In simple terms:

Need enough bar/psi to push the air through the system and run your tools.

Need enough FAD cfm / FAD m³/min to actually supply the volume of air those tools consume at that pressure.

Need to know the kW to understand how much it will cost to run.

hp is less reliable; focus on kW.

ISO 1217 FAD is the only flow rate figure you should trust for sizing.