Name of quantity | Conventional to SI unit | SI to Conventional |
force | 1 kgf = 9.807 N | 1 N = 0.102 kgf |
pressure, | 1 cmH2O = 0.098 kPa | 1 kPa = 10.2 cmH2O |
tension | 1 mmHg = 0.133 kPa | 1 kPa = 7.50 mmHg |
1 bar = 100 kPa | 1 kPa = 0.01 bar | |
1 dyn·cm−2 = 10−4 kPa | 1 kPa = 104 dyn·cm−2 | |
resistance | 1 cmH2O·l−1·s = 0.098 kPa·l−1·s | 1 kPa·l−1·s = 10.2 cmH2O·l−1·s |
conductance | 1 l·cmH2O−1·s−1 = 10.2 l·kPa−1·s−1 | 1 l·kPa−1·s−1 = 0.098 l·cmH2O−1·s−1 |
gas exchange* | 1 mL·min−1 = 0.045 mmol·min−1 | 1 mmol·min−1 = 22.4 mL·min−1 |
transfer factor | 1 mL·min−1·mmHg−1 = 0.335 mmol·min−1·kPa−1 | 1 mmol·min−1·kPa−1 = 2.99 mL·min−1·mmHg−1 |
concentration* | 1 mL/100 mL = 0.45 mmol·l−1 | 1 mmol·l−1 = 2.24 mL/100 mL |
*: Volume to mole; volume at STPD conditions (standard temperature = 0°C, pressure = 101.3 kPa, dry).