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Pressure Converter

Pound per Square Inch to Bar Converter

Convert Pound per Square Inch (psi) to Bar (bar) instantly with our interactive tool, benchmark tables, and detailed unit information.

1 psi = 0.0689 bar
Editable
psi
Input
Auto-Calculated
bar
Result
Pressure conversion — instant results

Convert Pound per Square Inch to Bar

1 psi = 0.0689 bar
Pound per Square Inch (psi) Bar (bar)
1 psi 0.068948 bar
5 psi 0.344738 bar
10 psi 0.689476 bar
25 psi 1.723689 bar
50 psi 3.447379 bar
100 psi 6.894757 bar
500 psi 34.473786 bar
1,000 psi 68.947573 bar

Convert Bar to Pound per Square Inch

1 bar = 14.5038 psi
Bar (bar) Pound per Square Inch (psi)
1 bar 14.503774 psi
5 bar 72.518869 psi
10 bar 145.037738 psi
25 bar 362.594344 psi
50 bar 725.188689 psi
100 bar 1,450.377377 psi
500 bar 7,251.886887 psi
1,000 bar 14,503.773773 psi

About Pound per Square Inch and Bar

Detailed information about both units of measurement.

IMPERIAL UNIT

Pound per Square Inch

psi
Definition
Pounds of force per square inch. The US standard for tire pressure, hydraulics, and engineering.
SI / Standard Information
Defined relative to Pa: 1 psi ≈ 6,894.76 Pa. The primary pressure unit in US automotive, industrial, and engineering contexts.
Approximate Comparison
One PSI is about 6.9 kPa or roughly the pressure of a tall drinking straw full of water.
Practical Applications
  • US tire pressure measurement
  • US hydraulic system pressure
  • US water system pressure
  • US HVAC refrigerant pressure
Real-World Examples
  • Car tire pressure is typically 30-36 PSI
  • Home water pressure is about 40-60 PSI
  • A hydraulic press might operate at 3,000-10,000 PSI
METRIC UNIT

Bar

bar
Definition
A metric unit of pressure equal to 100,000 pascals. Slightly less than standard atmospheric pressure.
SI / Standard Information
Defined as 100,000 Pa (100 kPa). 1 bar ≈ 0.987 atm. Widely used in European engineering, diving, and automotive contexts.
Approximate Comparison
One bar is slightly less than one atmosphere of pressure. 1 bar = 14.5 PSI.
Practical Applications
  • European tire pressure measurement
  • Scuba diving depth measurement
  • Industrial compressed air systems
  • European weather (millibar = hPa)
Real-World Examples
  • Car tire pressure is about 2.0-2.5 bar
  • Scuba tanks are filled to about 200-300 bar
  • Standard atmospheric pressure is 1.013 bar

About Converting Pound per Square Inch to Bar

Our Pound per Square Inch to Bar converter provides instant, accurate conversion between these two essential pressure units. Whether you are working in engineering, construction, education, or everyday pressure measurement, this tool delivers precise results with zero friction.

The Pound per Square Inch (psi) is a imperial unit of pressure. Pounds of force per square inch. The US standard for tire pressure, hydraulics, and engineering. One PSI is about 6.9 kPa or roughly the pressure of a tall drinking straw full of water.

The Bar (bar) is a metric unit of pressure. A metric unit of pressure equal to 100,000 pascals. Slightly less than standard atmospheric pressure. One bar is slightly less than one atmosphere of pressure. 1 bar = 14.5 PSI.

Conversion Formula & Worked Examples

The conversion between psi and bar uses the following mathematical relationship:

Bar = Pound per Square Inch × 0.068948

Pound per Square Inch = Bar × 14.503774

Whether you need to convert for us tire pressure measurement or european tire pressure measurement, our interactive converter provides instant, accurate results.

Example

1 psi

=

0.0689 bar

Example

5 psi

=

0.3447 bar

Example

10 psi

=

0.6895 bar

Reverse Direction

Need to convert Bar back into Pound per Square Inch?

Switch conversion direction to view Bar → Pound per Square Inch tables, benchmarks, and detailed info.

Open Bar → Pound per Square Inch

Practical Use Cases & Applications

psi Pound per Square Inch

  • US tire pressure measurement
  • US hydraulic system pressure
  • US water system pressure
  • US HVAC refrigerant pressure

bar Bar

  • European tire pressure measurement
  • Scuba diving depth measurement
  • Industrial compressed air systems
  • European weather (millibar = hPa)

Frequently Asked Questions

Common questions about this conversion and related measurement topics.

How do I convert Pound per Square Inch to Bar?
To convert Pound per Square Inch (psi) to Bar (bar), multiply the pound per square inch value by the conversion factor. Our converter below handles this instantly — just enter the value in psi and the bar result appears in real time.
How many Bar are in one pound per square inch?
One pound per square inch (psi) equals approximately 0.068948 bar (bar). This conversion factor is constant and can be used for any pound per square inch value.
What is the formula to convert psi to bar?
The conversion formula is: <strong>Bar = Pound per Square Inch × 0.068948</strong>. For example, 5 psi × 0.0689 = 0.3447 bar, and 10 psi × 0.0689 = 0.6895 bar.
Can I convert Bar back to Pound per Square Inch?
Yes! Use the reverse direction on our converter, or visit our dedicated <a href="/pressure/bar-to-psi/" class="text-accent-teal underline">Bar to Pound per Square Inch converter</a>. The reverse conversion factor is approximately 1 bar = 14.503774 psi.
Where is Pound per Square Inch commonly used?
US tire pressure measurement, US hydraulic system pressure, US water system pressure. Pounds of force per square inch. The US standard for tire pressure, hydraulics, and engineering.
What is the difference between Pound per Square Inch and Bar?
Pound per Square Inch (psi) and Bar (bar) are both units of pressure. Pound per Square Inch belongs to the imperial system, while Bar belongs to the metric system. Understanding the conversion between them is essential for international work in pressure measurement.
What are some real-world examples of psi and bar?
Pound per Square Inch: Car tire pressure is typically 30-36 PSI; Home water pressure is about 40-60 PSI Bar: Car tire pressure is about 2.0-2.5 bar; Scuba tanks are filled to about 200-300 bar

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About This Conversion ℹ

This Pound per Square Inch to Bar converter provides accurate, real-time conversions between these two pressure units.

Both units are among the most commonly used pressure measurements — rated 9/10 and 8/10 in popularity.

Bookmark this page for quick access to the Pound per Square Inch → Bar converter whenever you need precise unit conversion.

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