| Millennium: | 1st millennium |
|---|---|
| Centuries: | 8th century – 9th century – 10th century |
| Decades: | 810s 820s 830s – 840s – 850s 860s 870s |
| Years: | 844 845 846 – 847 – 848 849 850 |
| 847 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 847 DCCCXLVII |
| Ab urbe condita | 1600 |
| Armenian calendar | 296 ԹՎ ՄՂԶ |
| Bahá'í calendar | -997 – -996 |
| Bengali calendar | 254 |
| Berber calendar | 1797 |
| Buddhist calendar | 1391 |
| Burmese calendar | 209 |
| Byzantine calendar | 6355 – 6356 |
| Chinese calendar | 丙寅年十二月十一日 (3483/3543-12-11) — to —
丁卯年十一月二十日(3484/3544-11-20) |
| Coptic calendar | 563 – 564 |
| Ethiopian calendar | 839 – 840 |
| Hebrew calendar | 4607 – 4608 |
| Hindu calendars | |
| - Bikram Samwat | 903 – 904 |
| - Shaka Samvat | 769 – 770 |
| - Kali Yuga | 3948 – 3949 |
| Holocene calendar | 10847 |
| Iranian calendar | 225 – 226 |
| Islamic calendar | 232 – 233 |
| Japanese calendar | |
| Korean calendar | 3180 |
| Thai solar calendar | 1390 |