| Millennium: | 1st millennium |
|---|---|
| Centuries: | 8th century – 9th century – 10th century |
| Decades: | 810s 820s 830s – 840s – 850s 860s 870s |
| Years: | 846 847 848 – 849 – 850 851 852 |
| 849 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 849 DCCCXLIX |
| Ab urbe condita | 1602 |
| Armenian calendar | 298 ԹՎ ՄՂԸ |
| Bahá'í calendar | -995 – -994 |
| Bengali calendar | 256 |
| Berber calendar | 1799 |
| Buddhist calendar | 1393 |
| Burmese calendar | 211 |
| Byzantine calendar | 6357 – 6358 |
| Chinese calendar | 戊辰年十二月初三日 (3485/3545-12-3) — to —
己巳年閏十一月十三日(3486/3546-intercalary 11-13) |
| Coptic calendar | 565 – 566 |
| Ethiopian calendar | 841 – 842 |
| Hebrew calendar | 4609 – 4610 |
| Hindu calendars | |
| - Bikram Samwat | 905 – 906 |
| - Shaka Samvat | 771 – 772 |
| - Kali Yuga | 3950 – 3951 |
| Holocene calendar | 10849 |
| Iranian calendar | 227 – 228 |
| Islamic calendar | 234 – 235 |
| Japanese calendar | |
| Korean calendar | 3182 |
| Thai solar calendar | 1392 |