pound per square inch [psi] to bar [bar] Converter

Quick Reference

1 pound per square inch (psi) = 0.0689476 bar (bar)

1 bar (bar) = 14.50376808 pound per square inch (psi)

How to Convert pound per square inch to bar

1 psi = 0.0689476000045014 bar
1 bar = 14.503768077999998 psi

To convert pound per square inch to bar, divide the value by 14.50376808 (equivalently, multiply by 0.0689476). To convert bar back to pound per square inch, multiply by 14.50376808.

Example: convert 10 psi to bar:
10 psi = 10 x 0.0689476000045014 = 0.689476000045014 bar

↔ Convert bar to pound per square inch

pound per square inch

Definition: Pound per square inch (symbol: psi or lbf/in²) is a unit of pressure in the imperial and US customary systems. It is defined as the pressure resulting from a force of one pound-force applied to an area of one square inch.

History/origin: The pound per square inch is rooted in the English system of units. Its widespread use grew with the development of steam engines and other technologies requiring pressure measurements.

Current use: psi is commonly used in the United States for measuring tire pressure, hydraulic pressure, steam pressure, and the pressure of compressed gases. It's prevalent in automotive, manufacturing, and various engineering applications.

bar

Definition: The bar (symbol: bar) is a metric unit of pressure, but not part of the International System of Units (SI). It is defined as exactly equal to 100,000 Pa (100 kPa), which is slightly less than current average atmospheric pressure on Earth at sea level.

History/origin: The bar was introduced by British meteorologist William Napier Shaw in 1909.

Current use: The bar is used in various fields, including meteorology, diving (for measuring pressure underwater), and industrial applications. It is often used when a unit close to atmospheric pressure is convenient.

pound per square inch to bar Conversion Table

pound per square inch [psi]	bar [bar]
1 psi	0.0689476000045014 bar
2 psi	0.1378952000090028 bar
5 psi	0.344738000022507 bar
10 psi	0.689476000045014 bar
20 psi	1.378952000090028 bar
50 psi	3.4473800002250705 bar
100 psi	6.894760000450141 bar
200 psi	13.789520000900282 bar
500 psi	34.4738000022507 bar
1000 psi	68.9476000045014 bar

Common pairs of Pressure

pascal

pascal to kilopascal pascal to megapascal pascal to hectopascal pascal to bar pascal to torr

kilopascal

kilopascal to pascal kilopascal to megapascal kilopascal to hectopascal kilopascal to bar kilopascal to torr

megapascal

megapascal to pascal megapascal to kilopascal megapascal to hectopascal megapascal to bar megapascal to torr

hectopascal

hectopascal to pascal hectopascal to kilopascal hectopascal to megapascal hectopascal to bar hectopascal to torr

bar

bar to pascal bar to kilopascal bar to megapascal bar to hectopascal bar to torr

torr

torr to pascal torr to kilopascal torr to megapascal torr to hectopascal torr to bar

pound per square inch

pound per square inch to pascal pound per square inch to kilopascal pound per square inch to megapascal pound per square inch to hectopascal pound per square inch to bar

kilopound per square inch

kilopound per square inch to pascal kilopound per square inch to kilopascal kilopound per square inch to megapascal kilopound per square inch to hectopascal kilopound per square inch to bar

pound per square inch [psi] to bar [bar] Converter

To convert pound per square inch to bar, enter your value in the psi field above and the result in bar will appear instantly. You can also use the conversion factor shown in the table on this page to calculate manually. The formula is always the same: multiply your psi value by the fixed conversion ratio to get the equivalent in bar.

Our pound per square inch to bar converter uses standardized conversion factors defined by international scientific and metrological organizations. All calculations are performed with full floating-point precision. You can also choose how many decimal places to display in the result, so you get exactly the level of detail you need.

Yes, absolutely. Simply swap the source and destination units in the converter — select bar as your input unit and psi as your output unit. The same precision and standardized conversion factor applies in both directions.

Converting between pound per square inch and bar comes up regularly in engineering, scientific research, construction, and everyday tasks that involve measurements from different unit systems. Our converter eliminates the risk of manual calculation errors and saves time whenever you need to switch between these two units.

Yes, the pound per square inch to bar converter is completely free. No account or registration is required, and there are no usage limits. It works on any device — smartphones, tablets, and desktop computers — directly in your browser.

pound per square inch and bar are both units used to measure the same physical quantity, but they belong to different measurement systems or represent different scales. The mathematical relationship between them is fixed and constant, which is what makes accurate conversion possible. Scroll up to see the exact conversion factor, formula, and a reference table for common values.

pound per square inch [psi] to bar [bar] Converter

Quick Reference

1 pound per square inch (psi) = 0.0689476 bar (bar)

1 bar (bar) = 14.50376808 pound per square inch (psi)

How to Convert pound per square inch to bar

1 psi = 0.0689476000045014 bar
1 bar = 14.503768077999998 psi

To convert pound per square inch to bar, divide the value by 14.50376808 (equivalently, multiply by 0.0689476). To convert bar back to pound per square inch, multiply by 14.50376808.

Example: convert 10 psi to bar:
10 psi = 10 x 0.0689476000045014 = 0.689476000045014 bar

↔ Convert bar to pound per square inch

pound per square inch

bar

History/origin: The bar was introduced by British meteorologist William Napier Shaw in 1909.

pound per square inch to bar Conversion Table

pound per square inch [psi]	bar [bar]
1 psi	0.0689476000045014 bar
2 psi	0.1378952000090028 bar
5 psi	0.344738000022507 bar
10 psi	0.689476000045014 bar
20 psi	1.378952000090028 bar
50 psi	3.4473800002250705 bar
100 psi	6.894760000450141 bar
200 psi	13.789520000900282 bar
500 psi	34.4738000022507 bar
1000 psi	68.9476000045014 bar

Common pairs of Pressure

pascal

pascal to kilopascal pascal to megapascal pascal to hectopascal pascal to bar pascal to torr

kilopascal

kilopascal to pascal kilopascal to megapascal kilopascal to hectopascal kilopascal to bar kilopascal to torr

megapascal

megapascal to pascal megapascal to kilopascal megapascal to hectopascal megapascal to bar megapascal to torr

hectopascal

hectopascal to pascal hectopascal to kilopascal hectopascal to megapascal hectopascal to bar hectopascal to torr

bar

bar to pascal bar to kilopascal bar to megapascal bar to hectopascal bar to torr

torr

torr to pascal torr to kilopascal torr to megapascal torr to hectopascal torr to bar

pound per square inch

pound per square inch to pascal pound per square inch to kilopascal pound per square inch to megapascal pound per square inch to hectopascal pound per square inch to bar

kilopound per square inch

kilopound per square inch to pascal kilopound per square inch to kilopascal kilopound per square inch to megapascal kilopound per square inch to hectopascal kilopound per square inch to bar