Bar to PSI

Convert bar to psi instantly, right here.

Maintained by Roshan.

Use Bar to PSI

Converts bar to psi in this tab, with nothing sent anywhere.

Bar

Runs entirely on your deviceThe conversion happens in this browser tab. Nothing you type is uploaded, logged or stored, which is worth knowing for anything you would not paste into a search box.

PSI

Type or paste, then run.

The result will appear here.

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About Bar to PSI

Bar is the pressure unit of European specs, automotive manuals and technical equipment, but to match it against a US gauge or a tyre listed in PSI you convert to pounds per square inch. Converting bar to PSI turns a metric pressure into the unit US pumps, gauges and stickers use. One bar is about 14.5 PSI. The common case is again tyres: a European car may specify 2.2 bar while a US air pump reads PSI, so you convert to inflate correctly. Getting pressure right is not cosmetic - under-inflation wears the edges of a tyre and wastes fuel, over-inflation wears the centre and reduces grip. Beyond tyres, pressure-washer ratings, boiler pressures and gas regulators cross between bar and PSI depending on where they were made. Because one bar is about 14.5 PSI, multiplying bar by roughly 14.5 gives a quick estimate, with the exact factor for anything that must be precise. A bar-to-PSI conversion preserves the pressure reference: gauge pressure does not become absolute pressure.

Using Bar to PSI

Type a number of bar. You can paste a value with its unit; the tool reads the number.
The exact factor is applied and the result is shown as psi, updating live as you type.
Copy the answer, or switch to the reverse converter to go from psi back to bar.

Where bar to psi helps

Matching a US gauge

A boiler at 1.5 bar reads about 21.75 PSI on a US pressure gauge.

Both directions

Need the opposite? The psi-to-bar converter is linked below and uses the exact inverse factor.

Gauge versus absolute pressure

A label of 2 bar converts to about 29.01 PSI, but the conversion does not change its reference point. A gauge pressure remains a gauge pressure; an absolute reading remains absolute. Before comparing equipment labels, check whether they say barg, bara, psig or psia. Two numbers in the same unit can still describe different conditions. Use the equipment specification to resolve that difference before setting a regulator.

Before you use the result

The result is rounded for readability; the underlying factor is exact, so a value converted and back may differ in the last decimal place.
Units in your input are ignored - only the number is read - so make sure the figure you type is really in bar.

Questions about Bar to PSI

How many bar in a PSI?

One PSI is about 0.069 bar. Conversely, one bar is roughly 14.5 PSI, so 2 bar is about 29 PSI.

Is my data uploaded?

No. Bar to PSI does the arithmetic in this browser tab; the value is calculated on your device and is not sent to a server.