Convert Bar to PSI (Pounds per Square Inch) (bar to psi)

Pressure Converter

bar

psi

Value in PSI = Value in Bars × 14.503774 Multiply the value in bars by the conversion factor 14.503774.

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Overview

About converting bars to psi

Bar to PSI converts metric pressure specifications into the pounds-per-square-inch readings used on American gauges and equipment.

Since one bar is 14.5038 psi, converting bar to psi means multiplying by about 14.504. So 1 bar is 14.5 psi, 2 bar is 29.0 psi, and a 10 bar pressure washer is 145 psi.

European tire placards, dive equipment, and industrial gear often state pressure in bar, while the gauge you actually own may read in psi. The 14.5 factor is worth memorizing for anyone who works across both systems, since being off by a factor here can mean badly under- or over-inflated equipment.

Practical Tips

Quick estimate: multiply bar by 14.5.
2 bar ≈ 29 psi and 1 bar ≈ 14.5 psi are the everyday anchors.

How to Convert Bars to PSI

To convert bar to psi (pounds per square inch), we use the official conversion formulas. Below is the mathematical formula, plain-English explanation, and a worked example.

bar-to-psi-formula.py

# Mathematical Formula

Value in PSI = Value in Bars × 14.503774

# Worked Example (5 bar)

5 bar × 14.503774 = 72.5189 psi

What is a Bar?

Bar (bar)

Metric unit of pressure defined as exactly 100,000 Pascals (approx. atmospheric pressure at sea level).

What is a PSI (Pounds per Square Inch)?

PSI (Pounds per Square Inch) (psi)

US customary unit of pressure, representing pound-force applied to 1 square inch.

Bar to PSI (Pounds per Square Inch) Conversion Table

Bar (bar)	PSI (Pounds per Square Inch) (psi)
1 bar	14.50377 psi
2 bar	29.00755 psi
3 bar	43.51132 psi
5 bar	72.51887 psi
10 bar	145.03774 psi
15 bar	217.55661 psi
20 bar	290.07548 psi
25 bar	362.59434 psi
50 bar	725.18869 psi
100 bar	1450.37738 psi
250 bar	3625.94344 psi
500 bar	7251.88689 psi
1000 bar	14503.77377 psi

PSI (Pounds per Square Inch) to Bar Conversion Table

PSI (Pounds per Square Inch) (psi)	Bar (bar)
1 psi	0.06895 bar
2 psi	0.1379 bar
3 psi	0.20684 bar
5 psi	0.34474 bar
10 psi	0.68948 bar
15 psi	1.03421 bar
20 psi	1.37895 bar
25 psi	1.72369 bar
50 psi	3.44738 bar
100 psi	6.89476 bar
250 psi	17.23689 bar
500 psi	34.47379 bar
1000 psi	68.94757 bar

Questions

Frequently Asked Questions

How do I convert bars to psi?

Multiply the value in bars by the conversion factor 14.503774. For example, to convert 5 bars to psi: 5 × 14.503774 = 72.5189 psi.

What is the conversion factor from bar to psi (pounds per square inch)?

The conversion factor is 14.503774. One bar is equal to 14.503774 psi.

What is the reverse conversion from psi (pounds per square inch) to bar?

To convert psi back to bars, multiply by 0.068948 (or divide the value by 14.503774). One psi (pounds per square inch) is equal to 0.068948 bars.

How many PSI are in 1 atmosphere?

There are approximately 14.696 PSI in 1 standard atmosphere.

What is a Pascal in pressure?

A Pascal (Pa) is the basic unit of pressure in the SI system, equal to one Newton of force per square meter.

Convert Bar to PSI (Pounds per Square Inch).