Bar to PSI Converter

Convert bar to psi as you type.

Pressure Converter

1 bar ≈ 14.503773773 psi

Reference for one unit; displayed values may be rounded.

Enter Bar

bar

Bar

Use a dot or comma for decimals, without thousands separators.

Result in PSI

psi

PSI

Decimal places

Display rounding does not improve the accuracy of your original measurement. Very large or very small results use scientific notation.

Method and source

Bar to PSI Conversion Formula

To convert bar to PSI, multiply the bar value by 14.503768. One bar is defined as exactly 100,000 pascals, and one PSI equals 6,894.76 pascals.

1 bar ≈ 14.503773773 psi

Bar and PSI Explained

Bar (bar)

The bar is a metric pressure unit defined as exactly 100,000 pascals — deliberately close to the 101,325-pascal standard atmosphere at sea level. That near-atmosphere size makes it practical for everyday ratings: passenger tires hold about 2.3 bar, an espresso pump delivers 9 bar, and a full scuba cylinder stores 200 bar. Because its pascal definition is a round power of ten, the bar converts cleanly inside the metric system.

Where it is used: Bar is the everyday pressure unit across Europe, the UK, Australia, and much of Asia, appearing on tire stickers, boiler gauges, and machinery nameplates; the diving industry worldwide rates cylinders in bar.

Origin: British meteorologist William Napier Shaw introduced the bar in 1909, naming it after the Greek baros, meaning weight, as a convenient near-atmosphere unit.

PSI (psi)

PSI (pound-force per square inch) is the imperial pressure unit: one pound of force applied over one square inch of area. In SI terms it equals 6,894.76 pascals. As a finely scaled unit, PSI numbers run large — a 2.3 bar European tire rating becomes 33.4 PSI, and a 200 bar scuba cylinder becomes 2,900.8 PSI. Gauge readings marked PSIG measure pressure above the surrounding atmosphere, while PSIA readings include it.

Where it is used: PSI dominates in the United States: tire gauges, compressor regulators, plumbing codes, and automotive manuals all quote it, as do paintball and pressure-washer ratings.

Origin: The unit grew out of 19th-century British engineering practice, pairing the imperial pound-force with the square inch, and it remains standard in US customary use today.

Bar to PSI Conversion Table

Select a value to use it in the calculator.

Bar (bar)	PSI (psi)
	1.4503773773 psi
	2.9007547546 psi
	7.2518868865 psi
	14.503773773 psi
	21.7556606595 psi
	29.007547546 psi
	31.9083023006 psi
	36.2594344326 psi
	43.5113213191 psi
	58.0150950921 psi
	72.5188688651 psi
	87.0226426381 psi
	101.5264164111 psi
	116.0301901842 psi
	145.0377377302 psi
	217.5566065953 psi
	290.0754754604 psi
	362.5943443255 psi

PSI to Bar Conversion Table

PSI (psi)	Bar (bar)
1 psi	0.0689475729 bar
5 psi	0.3447378647 bar
10 psi	0.6894757293 bar
14.5 psi	0.9997398075 bar
20 psi	1.3789514586 bar
30 psi	2.068427188 bar
32 psi	2.2063223338 bar
36 psi	2.4821126255 bar
40 psi	2.7579029173 bar
50 psi	3.4473786466 bar
60 psi	4.1368543759 bar
80 psi	5.5158058345 bar
100 psi	6.8947572932 bar

Bar to PSI in Everyday Objects

Common real-world examples that make Bar and PSI easy to picture at a glance.

	Bar (bar)	PSI (psi)
A home heating boiler	1.5 bar	21.7556606595 psi
A hydraulic power unit	210 bar	3045.7924923344 psi
A contractor pressure washer	180 bar	2610.6792791438 psi
A garage air receiver	8 bar	116.0301901842 psi
A deep-dive steel cylinder	232 bar	3364.8755153409 psi
A draft-keg regulator	0.8 bar	11.6030190184 psi

When You Need Bar to PSI Conversions

Imported Car Tire Stickers

Your European-market hatchback lists 2.4 bar on the door jamb, but the gas-station gauge in Texas reads PSI — enter 2.4 and inflate to 34.8 PSI.

Scuba Fills at Foreign Dive Shops

A tropical fill station charges cylinders by bar while your pressure gauge dial is in PSI, so a 207 bar fill becomes 3,002.3 PSI before you splash.

Hydraulic Unit Nameplates

A German hydraulic power unit rated 250 bar must be verified against a US analog gauge — 250 bar is 3,625.9 PSI on the dial.

Espresso Machine Service

Bench-testing an Italian espresso machine, you hold the pump at 9 bar and need to log 130.5 PSI for the American test gauge on the portafilter.

Related Pressure Conversions

PSI to Bar Converter

PSI → Bar

Atmosphere to Pascal Converter

Atmosphere → Pascal

Pascal to Atmosphere Converter

Pascal → Atmosphere

PSI to Kilopascal Converter

PSI → Kilopascal

Kilopascal to PSI Converter

Kilopascal → PSI

mmHg to Pascal Converter

mmHg → Pascal

PSI to Atmosphere Converter

PSI → Atmosphere

Bar to Pascal Converter

Bar → Pascal

Kilopascal to Bar Converter

Kilopascal → Bar

How to Use

1

Enter Bar Value

Type the bar reading from your gauge or spec sheet — common entries include European tire pressures (2.0-2.5 bar), espresso pumps (9 bar), or scuba cylinders (200-232 bar)
2

View PSI Result

The equivalent PSI value appears instantly. For example, 2.3 bar converts to about 33.4 PSI
3

Copy or Swap

Copy the result or click Swap to convert PSI back to bar
4

Compare With US Gauge Norms

Check your reading against American standards. Most passenger cars run 32-36 PSI (2.2-2.5 bar), so a 2.3 bar tire is right in range at 33.4 PSI

Why Use Be Converter?

Instant Conversion

Get precise bar to PSI results in real-time as you type — perfect for decoding European tire stickers

High Accuracy

Uses the exact international standard: 1 bar = 100,000 Pa and 1 PSI = 6,894.76 Pa, accurate to 6 decimal places

Conversion Table

Quick reference with common values like 2.2 bar (31.9 PSI), 2.5 bar (36.3 PSI), and 200 bar (2,900.8 PSI)

Bidirectional

Easily swap between bar and PSI with one click for reverse conversions

Free & No Signup

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Frequently Asked Questions

How many PSI is 1 bar?

1 bar equals 14.503768 PSI. So a European tire rating of 2.5 bar equals about 36.3 PSI, and a 200 bar scuba fill equals about 2,900.8 PSI.

What is 2.3 bar in PSI?

2.3 bar × 14.503768 = 33.4 PSI. This is a typical passenger car cold tire pressure, matching the 33 PSI figure listed in many US owner manuals.

What is the difference between bar and PSI?

Bar is the metric pressure unit used in Europe and most of the world, while PSI (pounds per square inch) dominates in the United States. 1 bar ≈ 14.5 PSI. A German door sticker reading 2.2 bar means the same as 31.9 PSI on an American gauge.

How do I convert scuba tank pressure from bar to PSI?

Multiply bar by 14.503768. A standard 200 bar aluminum tank equals about 2,900.8 PSI. A 232 bar steel cylinder equals about 3,364.9 PSI, and a high-pressure 300 bar fill equals about 4,351.1 PSI.

Is 1 bar the same as 1 kg/cm2?

Nearly, but not exactly. The older metric engineering unit kilogram-force per square centimeter equals about 0.981 bar, so the two differ by roughly 2 percent. Modern specifications use bar or pascals to avoid this ambiguity.

How many PSI is 10 bar?

10 bar equals 145.0 PSI. That is a common rating for industrial air receivers and paint-spraying equipment — about the same as a 145 PSI shop compressor setting.

Is bar used in the United States?

Rarely for everyday measurements — American gauges read PSI. Bar appears on diving equipment, espresso machines, imported machinery, and some scientific instruments, which is exactly when a bar to PSI converter becomes handy.

How many PSI is 300 bar?

300 bar equals 4,351.1 PSI. This is a high-pressure scuba or paintball rating; tanks marked 300 bar need fill stations and regulators rated for 4,400 PSI service or higher.

About Bar to PSI Converter

Our free online bar to PSI converter provides instant, accurate pressure conversions. Whether you are reading a European tire sticker with a bar-scale gauge, filling a scuba cylinder abroad, servicing an espresso machine, or checking a hydraulic power unit nameplate, this tool gives you precise results. Bar is the everyday metric pressure unit used across Europe, the UK, and most of the world, while PSI (pounds per square inch) remains the standard in the United States. Our converter uses the exact conversion factor where 1 bar equals 14.503768 PSI.

Expert Tips for Bar to PSI Conversion

For quick tire estimates: 2.0 bar ≈ 29.0 PSI, 2.2 bar ≈ 31.9 PSI, 2.3 bar ≈ 33.4 PSI, 2.5 bar ≈ 36.3 PSI. Memorize these four and you will cover most European tire stickers

Espresso machines brew at 9 bar — that is 130.5 PSI of pump pressure. If your portafilter gauge reads in PSI, look for roughly 130 during extraction

Scuba cylinders come in 200 bar (2,900.8 PSI), 232 bar (3,364.9 PSI), and 300 bar (4,351.1 PSI) ratings. Match your regulator and fill station to the cylinder stamp

Home heating boilers typically show 1.0-1.5 bar on the gauge — only 14.5-21.8 PSI. A drop below 0.7 bar (10.2 PSI) usually means the loop needs repressurizing

For mental math, multiply bar by 14.5 instead of 14.503768. The error is under 0.03 percent, fine for gauges but use the exact factor for documentation

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