| Years |
|---|
| Millennium |
| 2nd millennium |
| Centuries |
| Decades |
| Years |
| 1813 by topic |
|---|
| Arts, history, and science |
| Countries |
|
|
| Lists of leaders |
| Birth and death categories |
| Establishments and disestablishments categories |
| Works category |
| Gregorian calendar | 1813 MDCCCXIII |
| Ab urbe condita | 2566 |
| Armenian calendar | 1262 ԹՎ ՌՄԿԲ |
| Assyrian calendar | 6563 |
| Balinese saka calendar | 1734–1735 |
| Bengali calendar | 1220 |
| Berber calendar | 2763 |
| British Regnal year | 53 Geo. 3 – 54 Geo. 3 |
| Buddhist calendar | 2357 |
| Burmese calendar | 1175 |
| Byzantine calendar | 7321–7322 |
| Chinese calendar | 壬申年 (Water Monkey) 4509 or 4449 — to — 癸酉年 (Water Rooster) 4510 or 4450 |
| Coptic calendar | 1529–1530 |
| Discordian calendar | 2979 |
| Ethiopian calendar | 1805–1806 |
| Hebrew calendar | 5573–5574 |
| Hindu calendars | |
| - Vikram Samvat | 1869–1870 |
| - Shaka Samvat | 1734–1735 |
| - Kali Yuga | 4913–4914 |
| Holocene calendar | 11813 |
| Igbo calendar | 813–814 |
| Iranian calendar | 1191–1192 |
| Islamic calendar | 1227–1229 |
| Japanese calendar | Bunka 10 (文化10年) |
| Javanese calendar | 1739–1740 |
| Julian calendar | Gregorian minus 12 days |
| Korean calendar | 4146 |
| Minguo calendar | 99 before ROC 民前99年 |
| Nanakshahi calendar | 345 |
| Thai solar calendar | 2355–2356 |
| Tibetan calendar | ཆུ་ཕོ་སྤྲེ་ལོ་ (male Water-Monkey) 1939 or 1558 or 786 — to — ཆུ་མོ་བྱ་ལོ་ (female Water-Bird) 1940 or 1559 or 787 |
1813 (MDCCCXIII) was a common year starting on Friday in the Gregorian calendar and a common year starting on Wednesday in the Julian calendar.