32 psi to bar
- Psi (psi)
- 32 psi
- Bar
- 2.2063223338 bar
Checked against: Exact-fraction computation from the legal unit definitions
Psi to bar converter
Convert psi to bar (psi to bar) with the exact factor, a conversion chart and worked steps.
By AdminDrafted with AI writing toolsUpdated Checked examples: 3
Bar
bar
Bar: 2.20632233381 bar
- Conversion
- 32 psi = 2.2063223338 bar
- 1 bar in psi
- 14.50377377psi
32 psi is about 2.2063223338 bar. In the other direction, 1 bar ≈ 14.50377377 psi.
Psi to bar
Psi to bar chart
| Psi | Bar |
|---|---|
| 10 | 0.6895 |
| 15 | 1.0342 |
| 20 | 1.379 |
| 25 | 1.7237 |
| 30 | 2.0684 |
| 32 | 2.2063 |
| 35 | 2.4132 |
| 40 | 2.7579 |
| 50 | 3.4474 |
| 100 | 6.8948 |
| 150 | 10.3421 |
How it's calculated S
Conversion factor
Rounded here for display; the calculation uses 50 significant digits.
Multiply
About the psi to bar converter
To convert psi to bar, multiply by 0.0689475729; to convert back, multiply by 14.503773773. For example, 32 psi is about 2.206322 bar. Displayed factors and results may be rounded.
A pressure marked psi may appear on a tire placard, gauge or component rating. Preserve whether that reading is gauge or absolute pressure when converting. Changing the unit does not remove the atmospheric offset between those pressure references.
One psi is one pound-force per square inch, about 6,894.757 Pa.
Both units are defined exactly. Calculations use 50 significant digits and round only for display.
How to convert psi to bar
Divide psi by 14.5038, or multiply by 0.0689476: bar = psi × 0.0689476. So 32 psi = 2.21 bar and 35 psi = 2.41 bar. Only the unit changes, so a gauge reading stays a gauge reading: 32 psi on a tire gauge is 2.21 bar on a bar tire gauge.
Divide by 14.5 for a quick answer
Dividing by 14.5 is within 0.03%: 32 ÷ 14.5 = 2.207 bar, against 2.2063 with the full factor. Multiplying by 0.069 is also close, 0.08% high, while multiplying by 0.07 runs 1.5% high.
Where the factor comes from
A psi is one pound-force, 4.4482216152605 N, on one square inch, 0.0254² m². That is 6,894.757 Pa, and a bar is exactly 100,000 Pa, so 1 psi = 0.0689475729 bar (NIST SP 811, Appendix B8).
That decimal never ends, so every psi-to-bar factor in use is rounded.
psi to bar chart
| psi | Bar, rounded |
|---|---|
| 10 | 0.689476 |
| 25 | 1.723689 |
| 30 | 2.068427 |
| 32 | 2.206322 |
| 35 | 2.413165 |
| 100 | 6.894757 |
Higher ratings convert the same way: a 90 psi air tool needs 6.21 bar, and a 3,000 psi pressure washer is rated at 206.84 bar.
Gauge vs absolute pressure
Tire, pump and compressor gauges show gauge pressure (psig): pressure above the surrounding air, so a flat tire reads 0. Absolute pressure (psia) counts from a vacuum, so the same flat tire holds about 14.7 psia, one atmosphere.
Changing units keeps the reference. 32 psig is 2.21 bar gauge, and 32 psia is 2.21 bar absolute. Switching between gauge and absolute is a separate step: add or subtract atmospheric pressure in the same unit.
At the standard atmosphere, 1.01325 bar (14.696 psi), 32 psig is 2.20632 + 1.01325 = 3.21957 bar absolute. Below atmospheric, gauge readings are negative: −5 psig is −0.345 bar gauge.
Common mistakes
- Comparing a gauge reading with an absolute spec. 2.21 bar gauge and 3.22 bar absolute describe the same tire at standard atmospheric pressure. Look for a g or an a after the unit, as in psig or bara.
- Multiplying by 14.5. That is the bar-to-psi direction and turns 32 psi into 464 bar. A bar is the larger unit, so the bar number is always the smaller one.
- Reading kPa as bar. A metric placard reading 220 means 220 kPa, which is 2.2 bar, since 1 bar is 100 kPa.
Related converters
For the reverse, use bar to psi. For kilopascals, use psi to kPa, and for atm, mmHg or inHg, the pressure converter.
Worked examples
25 psi to bar
- Psi (psi)
- 25 psi
- Bar
- 1.7236893233 bar
Checked against: Exact-fraction computation from the legal unit definitions
100 psi to bar
- Psi (psi)
- 100 psi
- Bar
- 6.8947572932 bar
Checked against: Exact-fraction computation from the legal unit definitions
Questions
How many bar is one psi?
1 psi is about 0.0689475729 bar. One psi is one pound-force per square inch, about 6,894.757 Pa.
How do I convert psi to bar?
Multiply by 0.0689475729: 32 psi × 0.0689475729 ≈ 2.206322 bar. To convert back, divide by the same factor. The factor shown may be rounded.
How can I estimate psi in bar without a calculator?
Multiply by 0.07. This is 1.5% above the exact factor (about 0.0689475729), so 32 psi comes out as 2.24 bar instead of 2.2063 bar.
About this calculator
Sources
Checked against references
This calculator includes 3 worked examples with independently sourced answers. They run in the test suite, and you can run them here too.