Psi to Bar Converter
Enter the value that you want to convert psi to bar or bar to psi.
1 psi = 0.0689476 bar
Formula: bar = psi value × 0.0689476
psi to bar
10 psi = 0.68948 bar
Popular Pressure Converters:
How Psi Relates to Bar
What is Psi?
Psi (psi) is a unit of pressure measurement. 1 psi is equal to 0.0689476 bar.
The Bar in Engineering
Bar (bar) is a unit of pressure measurement. 1 bar is equal to 14.5037738 psi.
Pressure Units Across Industries
Pressure measurements vary dramatically by industry. Meteorologists report in millibars or hectopascals, tire shops use PSI, scuba divers think in atmospheres or bar, vacuum engineers work in torr, and hydraulic systems specify in megapascals. A single industrial plant might encounter all these units across different equipment manuals, safety datasheets, and regulatory standards from different countries.
psi to bar metric conversion table
| 0.01 psi | = | 0.00069 bar |
| 0.1 psi | = | 0.00689 bar |
| 1 psi | = | 0.06895 bar |
| 2 psi | = | 0.13790 bar |
| 3 psi | = | 0.20684 bar |
| 4 psi | = | 0.27579 bar |
| 5 psi | = | 0.34474 bar |
| 6 psi | = | 0.41369 bar |
| 7 psi | = | 0.48263 bar |
| 8 psi | = | 0.55158 bar |
| 9 psi | = | 0.62053 bar |
| 10 psi | = | 0.68948 bar |
| 11 psi | = | 0.75842 bar |
| 12 psi | = | 0.82737 bar |
| 13 psi | = | 0.89632 bar |
| 14 psi | = | 0.96527 bar |
| 15 psi | = | 1.03421 bar |
| 16 psi | = | 1.10316 bar |
| 17 psi | = | 1.17211 bar |
| 18 psi | = | 1.24106 bar |
| 19 psi | = | 1.31000 bar |
| 20 psi | = | 1.37895 bar |
| 30 psi | = | 2.06843 bar |
| 40 psi | = | 2.75790 bar |
| 50 psi | = | 3.44738 bar |
| 60 psi | = | 4.13685 bar |
| 70 psi | = | 4.82633 bar |
| 80 psi | = | 5.51581 bar |
| 90 psi | = | 6.20528 bar |
| 100 psi | = | 6.89476 bar |
| 200 psi | = | 13.78951 bar |
| 300 psi | = | 20.68427 bar |
| 400 psi | = | 27.57903 bar |
| 500 psi | = | 34.47379 bar |
| 600 psi | = | 41.36854 bar |
| 700 psi | = | 48.26330 bar |
| 800 psi | = | 55.15806 bar |
| 900 psi | = | 62.05282 bar |
| 1000 psi | = | 68.94757 bar |
How to Convert Psi to Bar?
We can convert psi to bar by using an example.
Example:
Convert 20 Psi to Bar?
We know 1 Psi = 0.0689476 bar; 1 Bar = 14.5037738 psi.
20 psi = ___bar
20 × 0.0689476 = 1.37895 bar (we know 1 psi = 0.0689476 bar)
Answer:
20 psi = 1.37895 bar
How to Convert PSI to Bar (Step-by-Step)
Converting PSI to bar is common when reading European tire specifications, importing equipment, or working with international engineering standards. The conversion factor is 1 PSI = 0.0689476 bar.
- Write down the pressure value in PSI.
- Multiply the PSI value by 0.0689476.
- The result is the equivalent pressure in bar.
- For a quick estimate, divide PSI by 14.5 (since 1 bar ≈ 14.5 PSI).
Common PSI to Bar Conversions
Practical reference for converting US-standard pressures to European bar values, especially useful for automotive and import equipment.
| Psi | Bar |
|---|---|
| 14.7 PSI | 1.013 bar |
| 30 PSI | 2.07 bar |
| 32 PSI | 2.21 bar |
| 35 PSI | 2.41 bar |
| 44 PSI | 3.03 bar |
| 80 PSI | 5.52 bar |
| 120 PSI | 8.27 bar |
| 3000 PSI | 206.84 bar |
Solved Examples: PSI to Bar
Question 1: Your US tire gauge reads 35 PSI. What value should you set on a European digital inflator (in bar)?
Solution:
Pressure in bar = PSI × 0.0689476
= 35 × 0.0689476
= 2.413 bar
Answer: 35 PSI = 2.41 bar. Set the inflator to 2.4 bar.
Question 2: A US-made air compressor is rated at 150 PSI maximum. What is this in bar?
Solution:
Pressure in bar = 150 × 0.0689476
= 10.342 bar
Answer: 150 PSI = 10.34 bar — suitable for most pneumatic tools requiring 6-8 bar.
Question 3: An imported European pressure washer requires 100 bar inlet. Your US water supply is at 60 PSI. Is this sufficient?
Solution:
Convert 60 PSI to bar: 60 × 0.0689476 = 4.14 bar
Compare: 4.14 bar vs. 100 bar requirement
Answer: 60 PSI = 4.14 bar. This is the water supply pressure, not the pump output — the pump boosts it to 100+ bar internally.
Practice Questions: PSI to Bar
Try solving these on your own to test your understanding:
- Convert 28 PSI to bar. (Answer: 1.93 bar)
- A basketball is inflated to 8 PSI. What is this in bar? (Answer: 0.55 bar)
- Convert 2200 PSI (SCUBA tank) to bar. (Answer: 151.68 bar)
- An accumulator is pre-charged to 50 PSI. Express in bar. (Answer: 3.45 bar)
- Convert 100 PSI shop air to bar. (Answer: 6.89 bar)
Reading European Tire Labels When You Think in PSI
European tire door stickers and owner manuals specify cold inflation pressure in bar (e.g., 2.2 front / 2.4 rear). If you only have a PSI gauge, multiply the bar value by 14.5: 2.2 bar × 14.5 = ~32 PSI, 2.4 bar × 14.5 = ~35 PSI. Many modern tire gauges have a bar/PSI toggle — check the unit displayed before inflating. Under-inflation by even 0.2 bar (3 PSI) increases fuel consumption by 1-2% and accelerates uneven wear.
Why the US Still Uses PSI
PSI remains dominant in the US because the entire industrial ecosystem — pipe ratings (Schedule 40 = 150 PSI service), ASME boiler codes, OSHA safety regulations, and millions of installed gauges — is denominated in PSI. Transitioning would require replacing instrumentation, rewriting safety codes, and retraining technicians. However, multinational companies often spec equipment in both units, and digital gauges increasingly display dual readings.
PSI to Bar for Imported Equipment
When importing European or Japanese machinery, pressure specifications appear in bar or MPa. Quick reference for common US shop pressures: 90 PSI (standard air tool requirement) = 6.2 bar; 125 PSI (typical compressor max) = 8.6 bar; 175 PSI (high-pressure compressor) = 12.1 bar. Always verify that your air supply exceeds the tool minimum by at least 1-2 bar to account for pressure drop in long hose runs.
Key Takeaways
- Multiply PSI by 0.0689476 to get bar (or divide by 14.5 for a quick estimate).
- 14.7 PSI = 1.013 bar = 1 standard atmosphere.
- Typical US car tires at 30-35 PSI = 2.1-2.4 bar.
- US shop air at 90-125 PSI = 6.2-8.6 bar.
- Always check which unit your gauge displays before inflating.
- Under-inflation of just 3 PSI (0.2 bar) affects fuel economy and tire wear.
Psi to Bar Conversion Formula
bar = psi × 0.0689476
1 psi = 0.0689476 bar
1 bar = 14.5037738 psi
Reverse: psi = bar × 14.5037738
Frequently Asked Questions
How many bar are in 1 psi?
There are 0.0689476 bar in 1 psi. To convert psi to bar, multiply the value by 0.0689476.
How do I convert psi to bar?
Multiply your psi value by 0.0689476 to get the equivalent in bar. For example, 5 psi = 5 × 0.0689476 = 0.34474 bar.
How do I convert bar to psi?
Multiply your bar value by 14.5037738 to get the equivalent in psi. Alternatively, divide by 0.0689476.
What is 10 psi in bar?
10 psi is equal to 0.68948 bar.
What is 100 psi in bar?
100 psi is equal to 6.89476 bar.