| Singular | Plural | |
|---|---|---|
| Nominativ | conservatorium | conservatoria |
| Genitiv | conservatori, conservatorii | conservatoriorum |
| Dativ | conservatorio | conservatoriis |
| Akkusativ | conservatorium | conservatoria |
| Ablativ | conservatorio | conservatoriis |
| Vokativ | conservatorium | conservatoria |