| Millennium: | 3rd Millennium BC |
|---|---|
| Centuries: | 28th cent. BC – 27th cent. BC – 26th cent. BC |
| Decades: | 2700s BC 2690s BC 2680s BC – 2670s BC – 2660s BC 2650s BC 2640s BC |
| Years: | 2674 BC 2673 BC 2672 BC – 2671 BC – 2670 BC 2669 BC 2668 BC |
| Gregorian calendar | 2671 MMDCLXXI |
| Ab urbe condita | 3424 |
| Armenian calendar | 2120 ԹՎ ՍՃԻ |
| Assyrian calendar | 7421 |
| Bahá'í calendar | 827–828 |
| Bengali calendar | 2078 |
| Berber calendar | 3621 |
| British Regnal year | N/A |
| Buddhist calendar | 3215 |
| Burmese calendar | 2033 |
| Byzantine calendar | 8179–8180 |
| Chinese calendar | 庚寅年 (Metal Tiger) 5367 or 5307 — to — 辛卯年 (Metal Rabbit) 5368 or 5308 |
| Coptic calendar | 2387–2388 |
| Discordian calendar | 3837 |
| Ethiopian calendar | 2663–2664 |
| Hebrew calendar | 6431–6432 |
| Hindu calendars | |
| - Vikram Samvat | 2727–2728 |
| - Shaka Samvat | 2592–2593 |
| - Kali Yuga | 5771–5772 |
| Holocene calendar | 12671 |
| Igbo calendar | 1671–1672 |
| Iranian calendar | 2049–2050 |
| Islamic calendar | 2112–2113 |
| Japanese calendar | Heisei 683 (平成６８３年) |
| Javanese calendar | 2624–2625 |
| Juche calendar | 760 |
| Julian calendar | Gregorian minus 18 days |
| Korean calendar | 5004 |
| Minguo calendar | ROC 760 民國760年 |
| Nanakshahi calendar | 1203 |
| Thai solar calendar | 3214 |
| Unix time | 22121424000–22152959999 |
The year 2671 BC