simple app to convert between bar and psi pressure unit. and also others unit include: bar. psi. kg/cm2. mbar. Pa. kPa. MPa. inH2O. mmHg. N/m2. hPa. atm. mmH2O. inHg. mH2O. Torr. ftH2O. oz/in2. g/cm2. cmH2O. cmHg. at. mTorr. dyn/cm2.