1mH2O = 10Kpa =0.1bar
1Kpa = 0.1mH2O = 1000Pa =10mbar
1Bar = 10mH2O = 1000mbar
1mBar = 1 cmH2O = 100pa
1PSI =7Kpa
1Kpa= 0.145PSI
1bar=14.5PSI
1Mpa=10bar=100mH2O=1000Kps= 145PSI