1 psi to bar

1 psi ≈ 0.0689 bar

1 pound per square inch is approximately 0.0689 bar.

How to convert 1 psi to bar

Use the formula bar = psi × 0.0689475729:

bar = 1 × 0.0689475729
bar = 0.068948

So 1 psi = 0.068948 bar, or about 0.0689 bar rounded.

Rounded values and quick estimate

Rounded to a whole number: 0 bar
Rounded to one decimal place: 0.1 bar
Conversion factor: 1 pound per square inch = 0.0689 bar

Quick mental estimate: divide by 14.5. For 1 psi that gives about 0.069 bar — within 1% of the exact answer. Use the exact formula when precision matters.

1 psi in other units

Bar: 0.0689 bar
Kilopascals: 6.89 kPa
Atmospheres: 0.068 atm
Millimeters of mercury: 51.71 mmHg
Hectopascals: 68.95 hPa
Inches of mercury: 2.04 inHg
Megapascals: 0.006895 MPa

1 psi and nearby values

Pounds per square inch	Bar
1 psi	0.0689 bar
2 psi	0.1379 bar
3 psi	0.2068 bar
4 psi	0.2758 bar
5 psi	0.3447 bar

About pounds per square inch and bar

Pounds per square inch is the US unit of pressure, used for tires and air compressors. 1 psi ≈ 0.0689 bar.

One bar is 100,000 pascals, roughly atmospheric pressure at sea level. It is used for tire pressure in Europe.

Related conversions

Frequently asked questions

What is 1 psi in bar?

1 pound per square inch is about 0.0689 bar (1 psi ≈ 0.0689 bar).

How do you convert 1 psi to bar?

Apply bar = psi × 0.0689475729: bar = 1 × 0.0689475729, bar = 0.068948.

How many pounds per square inch is 0.0689 bar?

0.0689 bar is about 0.9993 pounds per square inch.