Bar to PSI Converter — Free Instant Pressure Conversion

Convert bar to PSI in real time with our free online tool, built for American users. Perfect for imported car tire placards, scuba fills in the Florida Keys, espresso machines, and hydraulic equipment. Fast, accurate bar to PSI results every time.

US Standard Pressure Converter & Calculator

1 bar = 14.5037680789 psi

The quick answer for 1 Bar — type any value below for the exact result

Enter Bar

bar

Bar

Result in PSI

psi

PSI

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 = 14.5037680789 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

Bar (bar)	PSI (psi)
0.1 bar	1.4503768079 psi
0.2 bar	2.9007536158 psi
0.5 bar	7.2518840395 psi
1 bar	14.5037680789 psi
1.5 bar	21.7556521184 psi
2 bar	29.0075361579 psi
2.2 bar	31.9082897737 psi
2.5 bar	36.2594201974 psi
3 bar	43.5113042368 psi
4 bar	58.0150723158 psi
5 bar	72.5188403947 psi
6 bar	87.0226084737 psi
7 bar	101.5263765526 psi
8 bar	116.0301446316 psi
10 bar	145.0376807895 psi
15 bar	217.5565211842 psi
20 bar	290.0753615789 psi
25 bar	362.5942019737 psi

PSI to Bar Conversion Table

PSI (psi)	Bar (bar)
1 psi	0.0689476 bar
5 psi	0.344738 bar
10 psi	0.689476 bar
14.5 psi	0.9997402 bar
20 psi	1.378952 bar
30 psi	2.068428 bar
32 psi	2.2063232 bar
36 psi	2.4821136 bar
40 psi	2.757904 bar
50 psi	3.44738 bar
60 psi	4.136856 bar
80 psi	5.515808 bar
100 psi	6.89476 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	21.7556521184 psi
A skid-steer hydraulic system	210 bar	3045.7912965789 psi
A 3,000 PSI contractor pressure washer	180 bar	2610.6782542104 psi
A garage air compressor tank	8 bar	116.0301446316 psi
A deep-dive steel scuba cylinder	232 bar	3364.8741943157 psi
A draft-beer keg regulator	0.8 bar	11.6030144632 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

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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