This century is the 21st century in the Gregorian calendar.
| Gregorian calendar | 2013 MMXIII |
| Ab urbe condita | 2766 |
| Armenian calendar | 1462 ԹՎ ՌՆԿԲ |
| Assyrian calendar | 6763 |
| Bahá'í calendar | 169–170 |
| Bengali calendar | 1420 |
| Berber calendar | 2963 |
| British Regnal year | 61 Eliz. 2 – 62 Eliz. 2 |
| Buddhist calendar | 2557 |
| Burmese calendar | 1375 |
| Byzantine calendar | 7521–7522 |
| Chinese calendar | (4649/4709-11-20) — to — (4650/4710-11-29) |
| Coptic calendar | 1729–1730 |
| Ethiopian calendar | 2005–2006 |
| Hebrew calendar | 5773–5774 |
| Hindu calendars | |
| - Vikram Samvat | 2069–2070 |
| - Shaka Samvat | 1935–1936 |
| - Kali Yuga | 5114–5115 |
| Holocene calendar | 12013 |
| Igbo calendar | |
| - Ǹrí Ìgbò | 1013–1014 |
| Iranian calendar | 1391–1392 |
| Islamic calendar | 1434–1435 |
| Japanese calendar | Heisei 25 |
| Juche calendar | 102 |
| Julian calendar | Gregorian minus 13 days |
| Korean calendar | 4346 |
| Minguo calendar | ROC 102 |
| Thai solar calendar | 2556 |
| Unix time | 1356998400–1388534399 |
Read more about This Century: See Also