Just to add what Leon wrote. Some quick conversion formulas: psi x 6.895 = kPa; In. Hg x 3.377 = kPa; kPa x .145 = psi; kPa x .2961 + In. Hg

So 10 In. Hg = 61 kPa (I'm rounding). 18 In. Hg = 34 kPa. 14.7 psi = 101 kPa. 14.5 psi = 100 kPa.

So somewhat loose... Login to read more.