Bar to PSI Converter for Tyres, Dive Cylinders & Espresso

Convert bar to psi as you type.

Pressure Converter - Convert kPa, PSI, Bar & More Instantly

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 tyres hold about 2.3 bar, an espresso pump delivers 9 bar, and a full dive 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, and much of Asia, and it shows up in Australia on European import tyre placards, dive cylinders, and imported 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 an 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 tyre rating becomes 33.4 PSI, and a 200 bar dive 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 is everywhere in Australian workshops despite kPa being the official unit: servo tyre gauges, compressor regulators, and plenty of owner's manuals 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 hydronic heating system	1.5 bar	21.7556606595 psi
A hydraulic power pack on a worksite	210 bar	3045.7924923344 psi
A tradie's pressure washer	180 bar	2610.6792791438 psi
A workshop air receiver	8 bar	116.0301901842 psi
A deep-dive steel cylinder	232 bar	3364.8755153409 psi
A pub keg regulator	0.8 bar	11.6030190184 psi

When You Need Bar to PSI Conversions

Imported Car Tyre Placards

Your European-market hatchback lists 2.4 bar on the door pillar, but the servo air pump reads PSI — enter 2.4 and inflate to 34.8 PSI before the trip up the Hume.

Scuba Fills at the Reef

A liveaboard fill station on the Great Barrier Reef charges cylinders by bar while your console 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 local analogue gauge — 250 bar is 3,625.9 PSI on the dial.

Espresso Machine Service

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

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How to Use

1

Enter Bar Value

Type the bar reading from your gauge or spec sheet — common entries include European import tyre pressures (2.0-2.5 bar), espresso pumps (9 bar), or dive 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 Australian Tyre Norms

Check your reading against local placards. Most passenger cars in Australia run 32-36 PSI (roughly 220-250 kPa), so a 2.3 bar tyre is right in range at 33.4 PSI. For beach driving, many 4WDers drop to around 16-20 PSI (1.1-1.4 bar)

Why Use Be Converter?

Instant Conversion

Get precise bar to PSI results in real-time as you type — perfect for decoding European import tyre placards at the servo

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

No registration required. Unlimited conversions. Completely free forever

Privacy First

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Frequently Asked Questions

How many PSI is 1 bar?

1 bar equals 14.503768 PSI. So a European tyre placard reading 2.5 bar equals about 36.3 PSI, and a 200 bar dive 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 tyre pressure, right in line with the 32-36 PSI figures printed on most Australian tyre placards.

What is the difference between bar and PSI?

Bar is the metric pressure unit used across Europe, while Australian gauges lean on PSI alongside kilopascals (kPa), the official unit. 1 bar ≈ 14.5 PSI, or 100 kPa. So a German door placard reading 2.2 bar means the same as 31.9 PSI on the servo gauge.

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

Multiply bar by 14.503768. A standard 200 bar aluminium 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 centimetre equals about 0.981 bar, so the two differ by roughly 2 per cent. 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 workshop air receivers and spray equipment — about the same as a 145 PSI setting on a decent garage compressor.

Is bar used in Australia?

Not officially — Australia standardised on kilopascals (kPa), and most modern gauges show both kPa and PSI. But bar still appears on European import tyre placards, dive cylinders, espresso machines, and imported machinery, which is exactly when a bar to PSI converter comes in handy.

How many PSI is 300 bar?

300 bar equals 4,351.1 PSI. This is a high-pressure dive or paintball rating; cylinders 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 decoding a European import's tyre placard with a PSI-only gauge, getting tanks filled before a Great Barrier Reef trip, dialling in an espresso machine, or checking a hydraulic power pack on the worksite, this tool gives you precise results. Bar is the everyday metric pressure unit across Europe and most of the world, while Australia officially uses kilopascals (kPa) — with PSI still dominating on servo gauges and compressors. Our converter uses the exact conversion factor where 1 bar equals 14.503768 PSI (100 kPa).

Expert Tips for Bar to PSI Conversion

For quick tyre 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. Memorise these four and you will cover most European import placards

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 — essential knowledge in coffee-mad Melbourne

Dive 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 the fill station to the cylinder stamp before heading out to the reef

Hydronic heating systems, common in older Melbourne and Adelaide homes, 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 repressurising

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

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