The convict era of Western Australia was the period during which Western Australia was a penal colony of the British Empire. Although it received small numbers of juvenile offenders from 1842, it was not formally constituted as a penal colony until 1849. Between 1850 and 1868, 9,721 convicts were transported to Western Australia on 43 convict ship voyages. Transportation ceased in 1868, but it was many years until the colony ceased to have any convicts in its care.