Tiff was correct with his first reply....

1 Bar=14.7 Psi at sea level,which incidentally is atmospheric pressure..

This also equates to 1 Kilogram per square centimetre....And technically 1 Ton per square foot...

This is where the equation gets a little mixed up,because we are already at a constant 1 bar of atmo pressure there is conversion factors that come into play.......And the Yanks always have their own idea of things anyway(Hence the conversion tables in the above site... )

So you are all nearly there,...14.5-14.7..................Or thereabouts...