| Sg. indefinite | speedometer |
| Sg. definite | speedometeret; speedometret |
| Pl. indefinite | speedometre |
| Pl. definite | speedometerene |
| Sg. indefinite | speedometers |
| Sg. definite | speedometerets; speedometrets |
| Pl. indefinite | speedometres |
| Pl. definite | speedometerenes |