Gauge to absolute pressure calculator

Steam tables use absolute pressure; add atmospheric pressure to a gauge reading.

Units

P_{\text{abs}} = P_{\text{gauge}} + 14.7

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

Given

P_{\text{abs}} = 63 + 14.7 = 77.7

Symbol	Meaning	Unit
$P_{\text{abs}}$	absolute pressure	psia
$P_{\text{gauge}}$	gauge pressure	psig

Symbol	Meaning	Unit
$P_{\text{abs}}$	absolute pressure	kPa absolute
$P_{\text{gauge}}$	gauge pressure	kPa gauge

Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.