Conversion factors between psi and bar

[JC Uknz 1Participant @jcuknz1]

[JC Uknz 1Participant @jcuknz1]

Confused by what I find on my web search

There surely must be an easy factor to multiply bar to find equivalent psi or divide psi to find bar?

[Paul LousickParticipant @paullousick59116]

1 bar (or 1 atmosphere) = 14.5037738007 psi

Edited By Paul Lousick on 19/02/2015 06:40:13

Edited By Paul Lousick on 19/02/2015 06:41:09

[David JuppParticipant @davidjupp51506]

Though in many cases it won't be significant, 1 bar is not quite equal to 1 atmosphere (either standard or technical).

Paul's figure for bar to psi is consistent with those in the data sources I use most often.

[Michael GilliganParticipant @michaelgilligan61133]

As is so often the case, it's worth looking at Wikipedia.

… Not guaranteed accurate, but a very good place to start.

MichaelG.

[Martin KyteParticipant @martinkyte99762]

Try

http://www.onlineconversion.com/pressure.htm

regards Martin

[RJWParticipant @rjw]

1 Bar = 14.5 psi,
1 Atmosphere = 14.7 psi (at sea level)

For ease of conversion use 15 per BAR as a conversion factor unless you need absolute accuracy, in which case use sea level calculation factored for your altitude referenced to sea level.

John.

[Martin KyteParticipant @martinkyte99762]

Sorry

**LINK**

Martin

[Bill DawesParticipant @billdawes]

Having worked in the industrial fan industry all my (working) life, I use 101325 Pa for standard atmospheric pressure (BS EN ISO 5801 standard) this approximates to the more familiar unit to us oldies as a shade under 14.7 psiA.

For purposes of a quick conversion to get a handle on pressure a figure of 15 psi is also useful to remember as posted above.

To those unfamiliar with pressures remember to differentiate between absolute and gauge pressures.

The figures above are absolute pressures.

Bill D.

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