Back Anyos 1840 AN عقد 1840 Arabic عوام 1840 ARY عقد 1840 ARZ Década del 1840 AST 1840-cı illər AZ 1840-an BAN 1840-я BE 1840-я BE-X-OLD 1840-те Bulgarian
1840s ke ngwagasome tšhupamabakeng ya Gregorian wa go thoma ka 1 Pherekgong 1840 ya fela ka 31 Manthole 1849. Ngwagasome 1840s o wela ngwagengkgolo wa 19.
| Ngwagakete: | Ngwagakete 2 |
| Mengwagakgolo: | Ngwagakgolo 18 – Ngwagakgolo 19 – Ngwagakgolo 20 |
| Mengwagasome: | 1810s 1820s 1830s – 1840s – 1850s 1860s 1870s |
| Mengwaga: | 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 |
| 1840s-tšago tswalanya: |