FÓRMULAS
| Entidad elemental | 1 kgf = 9.8 N | 1″= 25.4 mm | 1 lb = 0.454 kg |
| Presión | 1 MPa = 10.2 kgf/cm2 | 1 Pa = 1 N/m2 | 1 bar = 105 N/m2 |
| 1 MPa = 10 bar | 1 kgf/cm2 = 0.98 bar | 1 psi = 0.0689 bar | |
| Flujo | 1 m3/min = 1000 L/min | 1 GPM = 3.785 L/min | |
| Corriente | 1 KW = 1.36 PS | 1 KW = 1.34 hp | 1 W = 1 Nm/s |