where Pabs is absolute pressurePg, is gauge pressure, and Patm is atmospheric pressure. For example, if your tire gauge reads 34 lb/incz (pounds per square inch), then the absolute pressure is .......
To get absolute pressure, it's given by getting the sum of atmospheric pressure and gauge pressure. Now for this case, when the tire gauge reading is 34 lb/incz (pounds per square inch) and then adding the atmospheric pressure of 14.7 lb/incz (pounds per square inch) then the absolute pressure will be 34+14.7=48.7 lb/incz (pounds per square inch) which is equivalent to equivalent to 336 kPa
