Example: To convert 5 kilometer per hour to Mach (SI standard), multiply 5 by 0.0008380431358233272 to get 0.0042 mach (si) (4.1902e-3 mach (si)).
| km/h | mach (si) |
|---|---|
| 2 km/h | 0.0017 mach (si) (1.6761e-3 mach (si)) |
| 3 km/h | 0.0025 mach (si) (2.5141e-3 mach (si)) |
| 4 km/h | 0.0034 mach (si) (3.3522e-3 mach (si)) |
| 5 km/h | 0.0042 mach (si) (4.1902e-3 mach (si)) |
| 6 km/h | 0.005 mach (si) (5.0283e-3 mach (si)) |
| 7 km/h | 0.0059 mach (si) (5.8663e-3 mach (si)) |
| 8 km/h | 0.0067 mach (si) (6.7043e-3 mach (si)) |
| 9 km/h | 0.0075 mach (si) (7.5424e-3 mach (si)) |
| 10 km/h | 0.0084 mach (si) (8.3804e-3 mach (si)) |
| 11 km/h | 0.0092 mach (si) (9.2185e-3 mach (si)) |
| 12 km/h | 0.0101 mach (si) (1.0057e-2 mach (si)) |
| 13 km/h | 0.0109 mach (si) (1.0895e-2 mach (si)) |
| 14 km/h | 0.0117 mach (si) (1.1733e-2 mach (si)) |
| 15 km/h | 0.0126 mach (si) (1.2571e-2 mach (si)) |
| 16 km/h | 0.0134 mach (si) (1.3409e-2 mach (si)) |