Bar to PSI Converter — Free Instant Pressure Conversion

Convert bar to psi as you type.

US Standard Pressure Converter & Calculator

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: an imported sedan's tires run 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 placards, boiler gauges, and machinery nameplates. In the US, you'll spot it on imported cars, dive equipment, and espresso machines — and 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 tire on an imported sedan 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 is the home unit in the United States: tire gauges, air compressor regulators, plumbing codes, and owner's manuals all quote it, as do pressure-washer, paintball, and pneumatic-tool ratings on shelves at Home Depot and beyond.

Origin: The unit grew out of 19th-century British engineering practice, pairing the imperial pound-force with the square inch, and it remains the 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 basement boiler in a Boston brownstone	1.5 bar	21.7556606595 psi
A skid-steer hydraulic system	210 bar	3045.7924923344 psi
A 3,000 PSI contractor pressure washer	180 bar	2610.6792791438 psi
A garage air compressor tank	8 bar	116.0301901842 psi
A deep-dive steel scuba cylinder	232 bar	3364.8755153409 psi
A draft-beer keg regulator	0.8 bar	11.6030190184 psi

When You Need Bar to PSI Conversions

Imported Car Tire Placards

Your BMW 3 Series lists 2.4 bar on the door placard, but the air pump at a Houston gas station reads PSI — enter 2.4 and inflate to 34.8 PSI.

Scuba Fills at US Dive Charters

The dive boat out of Key Largo fills cylinders in bar while your submersible pressure gauge reads PSI, so a 207 bar fill becomes 3,002.3 PSI before you splash.

Hydraulic Unit Nameplates

A German-built hydraulic power pack on a Chicago job site is rated 250 bar and must be verified against a US analog gauge — 250 bar is 3,625.9 PSI on the dial.

Espresso Machine Service

Bench-testing a La Marzocco in a Seattle café, you hold the pump at 9 bar and log 130.5 PSI on the American test gauge at the portafilter.

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How to Use

1

Enter Bar Value

Type the bar reading from your gauge, placard, or spec sheet — common entries include imported car 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 hit Swap to convert PSI back to bar
4

Check Against US Tire Norms

Compare with American standards. Most US placards call for 32-35 PSI, so a 2.3 bar imported tire at 33.4 PSI is right in the sweet spot

Why Use Be Converter?

Instant Conversion

Get precise bar to PSI results as you type — decode the door placard on your imported BMW or VW before you hit the air pump

High Accuracy

Built on 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 the values you actually need: 2.2 bar (31.9 PSI), 2.5 bar (36.3 PSI), and 200 bar (2,900.8 PSI)

Bidirectional

Swap between bar and PSI with one click for reverse conversions — no retyping

Free & No Signup

No accounts, no paywalls, no limits. 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 the 2.5 bar listed on a Mercedes door placard is about 36.3 PSI, and a 200 bar scuba fill from a Florida Keys dive shop is about 2,900.8 PSI.

What is 2.3 bar in PSI?

2.3 bar × 14.503768 = 33.4 PSI. That's a typical cold tire pressure for imported sedans and lines up with the 33 PSI figure printed in many Honda and Toyota owner's 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) rules the road in the United States. 1 bar ≈ 14.5 PSI. The 2.2 bar on a VW's German door placard is the same as 31.9 PSI on a gauge at a Texas gas station.

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

Multiply bar by 14.503768. A standard 200 bar aluminum tank holds about 2,900.8 PSI. A 232 bar steel cylinder equals about 3,364.9 PSI, and a high-pressure 300 bar fill comes out to about 4,351.1 PSI — handy when your submersible pressure gauge reads PSI but the Key Largo fill station fills in bar.

Is 1 bar the same as 1 kg/cm2?

Close, but not identical. The older metric engineering unit kilogram-force per square centimeter equals about 0.981 bar, so they differ by roughly 2 percent. You'll mostly see kg/cm2 on vintage imported equipment; modern specs use bar or pascals to avoid the ambiguity.

How many PSI is 10 bar?

10 bar equals 145.0 PSI. That's a common rating for industrial air receivers and paint sprayers — right in line with a 145 PSI setting on a shop compressor from Home Depot or Harbor Freight.

Is bar used in the United States?

Rarely for everyday use — American gauges read PSI. Bar shows up on dive gear, espresso machines like the Breville or La Marzocco, imported BMW and Mercedes specs, and some lab instruments, which is exactly when this bar to PSI converter earns its keep.

How many PSI is 300 bar?

300 bar equals 4,351.1 PSI. That's a high-pressure scuba rating; American paintball players will recognize it as just shy of the 4,500 PSI HPA tanks common at US fields. 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 delivers instant, accurate pressure conversions for American users. Decoding the metric tire placard on an imported German car at a Houston air pump, filling a scuba cylinder on a Florida Keys dive charter, dialing in a 9-bar espresso machine, or verifying a hydraulic power unit nameplate on the job site — this tool gives you precise PSI numbers every time. Bar is the everyday metric pressure unit across Europe and most of the world, while PSI remains the US standard. Our converter uses the exact conversion factor: 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'll handle any import's door placard at the pump

Espresso machines brew at 9 bar — that's 130.5 PSI of pump pressure. If your home Breville's gauge reads in bar, roughly 9 during a shot is exactly where it should be

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 the dive charter's fill station to the cylinder stamp

Homes in the Northeast with radiator heat — think Boston brownstones or NYC walk-ups — run boilers at 1.0-1.5 bar, only 14.5-21.8 PSI. A drop below 0.7 bar (10.2 PSI) means it's time to repressurize the loop

For mental math on a road trip, 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 service records

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