PSI to Bar Converter

Instant, two-way conversion across common engineering units.

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1 psi = 0.068947573 bar(Pounds per square inchBar)

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Converting pounds per square inch to bar

To convert pounds per square inch to bar, multiply the value by 0.068947573. Pressure conversions link structural loading, material strength grades and mechanical system ratings across metric and US practice.

PSI (psi)

Pounds per square inch (psi) is the pressure unit of US customary engineering.

Origin
Derived from the avoirdupois pound-force acting on one square inch.
Where it is used
Used for piping, pneumatics, hydraulic systems and US material strengths.
Relation to SI
1 psi = 6,894.757 Pa, about 6.895 kPa.

Bar (bar)

The bar is a metric pressure unit close to atmospheric pressure at sea level.

Origin
A non-SI unit retained in industry, defined as exactly 100,000 Pa.
Where it is used
Used for pipework, pumps, hydraulics and pressure testing.
Relation to SI
1 bar = 100,000 Pa = 100 kPa exactly.

Frequently asked questions

How many bar are in one pound per square inch?

1 psi equals 0.068947573 bar.

How do I convert pounds per square inch to bar?

Multiply the value by 0.068947573. For example, 10 psi equals 0.68947573 bar.

How do I convert back from bar to pounds per square inch?

1 bar equals 14.503774 psi. The converter above works in both directions, so you can type into either field.

How does pressure relate to structural loading?

One kilopascal equals one kilonewton per square meter, which is why imposed floor loads and wind pressures are stated in kPa or kN/m².

Why are concrete and steel grades given in MPa?

One megapascal equals one newton per square millimeter, which matches the millimeter cross-sections used in structural design, so C30/37 or S355 read directly as stress limits.

Is this pressure converter free to use?

Yes. Every unit conversion runs in your browser, needs no account and is free for professional use.

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