Bar to PSI Converter
Convert bar to PSI instantly with our free online tool. Essential for European tire specs, scuba cylinders, espresso machines, and hydraulic equipment. Get accurate bar to PSI results.
Pressure ConverterThe quick answer for 1 Bar — type any value below for the exact result
Bar
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.
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
| 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 home heating boiler | 1.5 bar | 21.7556521184 psi |
| A hydraulic power unit | 210 bar | 3045.7912965789 psi |
| A contractor pressure washer | 180 bar | 2610.6782542104 psi |
| A garage air receiver | 8 bar | 116.0301446316 psi |
| A deep-dive steel cylinder | 232 bar | 3364.8741943157 psi |
| A draft-keg regulator | 0.8 bar | 11.6030144632 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
How to Use
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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)
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2
View PSI Result
The equivalent PSI value appears instantly. For example, 2.3 bar converts to about 33.4 PSI
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3
Copy or Swap
Copy the result or click Swap to convert PSI back to bar
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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
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Frequently Asked Questions
How many PSI is 1 bar?
What is 2.3 bar in PSI?
What is the difference between bar and PSI?
How do I convert scuba tank pressure from bar to PSI?
Is 1 bar the same as 1 kg/cm2?
How many PSI is 10 bar?
Is bar used in the United States?
How many PSI is 300 bar?
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