Pressure Converter (psi, bar, kPa, hPa)
Type in either box to convert psi to bar, bar to psi, or any pair of pressure units, with the answer in every unit at once.
Type in either box. Tap a unit under a box to change it.
Gauge pressure is above the air around you. Absolute adds 1 standard atmosphere (sea level).
psi to bar table
Common values both ways. Change the units above and the table follows.
| psi | bar |
|---|---|
| 1 | 0.06894757 |
| 2 | 0.1378951 |
| 5 | 0.3447379 |
| 10 | 0.6894757 |
| 15 | 1.034214 |
| 20 | 1.378951 |
| 25 | 1.723689 |
| 28 | 1.930532 |
| 30 | 2.068427 |
| 32 | 2.206322 |
| 35 | 2.413165 |
| 40 | 2.757903 |
| 50 | 3.447379 |
| 60 | 4.136854 |
| 80 | 5.515806 |
| 100 | 6.894757 |
| 150 | 10.34214 |
| 200 | 13.78951 |
| 500 | 34.47379 |
| 1,000 | 68.94757 |
| bar | psi |
|---|---|
| 1 | 14.50377 |
| 2 | 29.00755 |
| 5 | 72.51887 |
| 10 | 145.0377 |
| 15 | 217.5566 |
| 20 | 290.0755 |
| 25 | 362.5943 |
| 28 | 406.1057 |
| 30 | 435.1132 |
| 32 | 464.1208 |
| 35 | 507.6321 |
| 40 | 580.151 |
| 50 | 725.1887 |
| 60 | 870.2264 |
| 80 | 1,160.302 |
| 100 | 1,450.377 |
| 150 | 2,175.566 |
| 200 | 2,900.755 |
| 500 | 7,251.887 |
| 1,000 | 14,503.77 |
Common examples
- Car tyre (typical)32 psi = 2.21 bar = 220.6 kPa
- Car tyre, loaded or SUV (typical)35 psi = 2.41 bar = 241.3 kPa
- European door-sticker tyre figure2.2 bar = 31.9 psi · 2.5 bar = 36.3 psi
- Road bike tyre (typical)100 psi = 6.89 bar
- Blood pressure 120/80120 mmHg = 16.0 kPa · 80 mmHg = 10.7 kPa
- Standard air pressure (sea level)1013.25 hPa = 1 atm = 29.92 inHg = 14.696 psi
- A deep weather low950 hPa = 28.05 inHg
- Scuba tank fill (typical)200 bar = 2,901 psi · 3,000 psi = 206.8 bar
- Espresso machine (typical)9 bar = 130.5 psi
- Pressure cooker (gauge, typical)15 psi = 1.03 bar
- Old tyre gauge in kg/cm²1 kg/cm² = 14.22 psi = 0.98 bar
“Typical” figures are everyday examples, not advice for your car, bike or equipment. Always use the pressure printed on your tyre placard or in the maker’s manual.
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How your pressure is converted
Every unit goes into pascals first, then out to the unit you want.
- 1
Your reading
32 psi →
bar - 2
Into pascals
32 × 6,894.757 =
220,632.2 Pa - 3
Out to bar
220,632.2 ÷ 100,000 =
2.206322 bar - 4
The shortcut
1 psi =
0.06894757 bar
Read more: the formula, a worked example, bar to psi, tyres, weather and blood pressure
The formula
pascals = your number × pascals in one of your unit
answer = pascals ÷ pascals in one of the unit you want
psi → bar: bar = psi × 0.0689476 (or psi ÷ 14.5038)
bar → psi: psi = bar × 14.5038
Worked example
32 psi in bar. First into pascals: 32 × 6,894.757 = 220,632.2 Pa. Then out to bar, where 1 bar is 100,000 Pa: 220,632.2 ÷ 100,000 = 2.206322 bar, or about 2.21 bar. As a shortcut, 1 psi = 0.06894757 bar.
The other way, bar to psi: 2.2 bar × 14.50377 = 31.91 psi.
| 1 of this | In pascals | Where it’s used |
|---|---|---|
| psi | 6,894.757 | Tyres, air tools, US and UK gauges |
| bar | 100,000 (exact) | Tyres in Europe, diving, espresso, hydraulics |
| kPa | 1,000 (exact) | Tyres in many countries, engineering |
| hPa = mbar | 100 (exact) | Weather maps, altimeters outside the US |
| atm | 101,325 (exact) | Chemistry, standard air pressure |
| mmHg | 133.3224 | Blood pressure, vacuum |
| Torr | 133.3224 (101,325 ÷ 760) | Vacuum and lab work |
| inHg | 3,386.389 | US weather reports and altimeters |
| kg/cm² (at) | 98,066.5 (exact) | Older tyre and industrial gauges |
| cmH₂O / inH₂O | 98.0665 / 249.0889 | CPAP machines, gas lines, ducts |
Gauge or absolute?
A tyre gauge shows gauge pressure: how far above the air around you. Weather and science use absolute pressure, measured from a perfect vacuum. At sea level the difference is one standard atmosphere: 14.696 psi, 1.01325 bar or 101.325 kPa. So a tyre at 32 psi gauge is about 46.7 psi absolute. Labels like psig and psia, or barg and bara, say which one you have.
Altimeters and weather
Pilots set their altimeter to the local air pressure (QNH). The US and Canada use inches of mercury, with 29.92 inHg as standard. Most other countries use hectopascals, with 1013 hPa as standard. 1 inHg is 33.86 hPa. Near sea level, each hPa is roughly 30 ft of height and each inHg about 1,000 ft, which is why a wrong setting matters. This is a rule of thumb; the real figure changes with height.
Blood pressure
Blood pressure is still given in mmHg almost everywhere. 120/80 mmHg is 16.0/10.7 kPa. The first number is the pressure when the heart beats; the second is between beats.
Conversion factors are exact by definition where marked, using standard gravity 9.80665 m/s², 1 lb = 0.45359237 kg and 1 in = 0.0254 m. Mercury and water columns use the conventional values in NIST Special Publication 811 (checked 11 October 2026). A diving msw here is 0.1 bar.
Common questions
How do I convert psi to bar?
Divide psi by 14.5038, or multiply by 0.0689476. So 32 psi is 32 × 0.0689476 = 2.21 bar, and 35 psi is 2.41 bar. Behind the scenes, 1 psi is 6,894.757 pascals and 1 bar is exactly 100,000 pascals.
How do I convert bar to psi?
Multiply bar by 14.5038. A tyre sticker that says 2.2 bar means 2.2 × 14.5038 = 31.9 psi, and 2.5 bar is 36.3 psi. Tap the swap button above to turn any psi to bar answer into bar to psi.
What is the difference between hPa and mbar?
None in size: 1 hectopascal is exactly 1 millibar, which is 100 pascals. Weather maps used millibars for years and now mostly use hectopascals. Standard air pressure at sea level is 1013.25 hPa, which is 29.92 inHg or 1 atmosphere.
What is 120/80 blood pressure in kPa?
Blood pressure is measured in millimetres of mercury (mmHg). 120 mmHg is 16.0 kPa and 80 mmHg is 10.7 kPa, because 1 mmHg is 0.1333 kPa. The converter does the same for any reading, including the bottom number.
Is a tyre pressure gauge reading gauge or absolute?
Gauge. A tyre gauge shows how far the pressure is above the air around you, so a flat tyre reads 0 even though it still holds about 1 atmosphere (14.7 psi). Absolute pressure adds that atmosphere back. Advanced mode converts between the two.
How many hPa is 1 inHg on an altimeter?
1 inch of mercury is 33.86 hPa. Pilots in the US set altimeters in inHg (29.92 is standard) while most other countries use hPa (1013 is standard). Near sea level, 1 hPa is about 30 ft of height and 1 inHg about 1,000 ft, as a rule of thumb.
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