Convert psi to bars

1 psi=0.06895bar

Use the converter below to change any psi value into bars instantly — with formula, conversion table, and real-world examples.

You have

Equals

0.068948

Conversion formula

Forward

bars = psi × 0.06895

Reverse

psi = bars × 14.5038

Example: 10 psi × 0.06895 = 0.6895 bar.

About both units

From

Pound per Square Inch

psi

Pounds per square inch equals approximately 6895 Pa. It is the dominant pressure unit in the US — tyre pressures, plumbing, compressed air. Standard US tyre pressure: 32–35 psi.

Real-world: US tyre: 32–35 psi. Water supply: 40–60 psi. SCUBA tank: 3000 psi. Car AC system: 30–200 psi.

Read full pound per square inch reference →

Bar

bar

The bar equals 100,000 pascals — slightly less than one atmosphere (1.01325 bar). It is a convenient unit for everyday pressures: tyre pressures, diving depth, weather fronts. Common in European engineering.

Real-world: Car tyre: 2.0–2.5 bar. SCUBA at 10 m depth: 2 bar absolute. Fire hose: 5–7 bar.

Read full bar reference →

Pound per Square Inch to Bar conversion table

Common psi to bars values for quick reference.

Pound per Square Inch (psi)	Bar (bar)
1 psi	0.06895 bar
5 psi	0.3447 bar
10 psi	0.6895 bar
25 psi	1.72369 bar
50 psi	3.44738 bar
100 psi	6.89476 bar
200 psi	13.7895 bar
500 psi	34.4738 bar
1,000 psi	68.9476 bar
5,000 psi	344.738 bar

Tips & common mistakes

Quick tips

1 psi ≈ 6.9 kPa = 0.069 bar.
14.7 psi = 1 atm = 1.01 bar.
Most US pressure gauges show psi.

Avoid these

Setting a European tyre at 35 bar instead of 35 psi — disaster.
Confusing psi (gauge) with psia (absolute).
Using psi in scientific papers — prefer Pa or MPa.

Frequently asked questions

How many bars in a pound per square inch?

One pound per square inch equals 0.06895 bars.

How do I convert psi to bars?

Multiply the pound per square inch value by 0.06895 to get the equivalent in bars.

What is 100 psi in bars?

100 psi equals 6.89476 bars.

Is a pound per square inch bigger than a bar?

No. 1 pound per square inch equals 0.06895 bars, so one pound per square inch is smaller.

How to convert psi to bars without a calculator?

Multiply by 0.07 for a quick estimate; use a calculator for precise results.

Related pressure conversions

📊 See full comparison matrix →

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Convert psi to bars

🧮 Conversion formula