| Millennium: | 4th Millennium BC |
|---|---|
| Centuries: | 36th cent. BC – 35th cent. BC – 34th cent. BC |
| Decades: | 3470s BC 3460s BC 3450s BC – 3440s BC – 3430s BC 3420s BC 3410s BC |
| Years: | 3450 BC 3449 BC 3448 BC – 3447 BC – 3446 BC 3445 BC 3444 BC |
| Gregorian calendar | 3447 MMMCDXLVII |
| Ab urbe condita | 4200 |
| Armenian calendar | 2896 ԹՎ ՍՊՂԶ |
| Assyrian calendar | 8197 |
| Bahá'í calendar | 1603–1604 |
| Bengali calendar | 2854 |
| Berber calendar | 4397 |
| British Regnal year | N/A |
| Buddhist calendar | 3991 |
| Burmese calendar | 2809 |
| Byzantine calendar | 8955–8956 |
| Chinese calendar | 丙戌年 (Fire Dog) 6143 or 6083 — to — 丁亥年 (Fire Pig) 6144 or 6084 |
| Coptic calendar | 3163–3164 |
| Discordian calendar | 4613 |
| Ethiopian calendar | 3439–3440 |
| Hebrew calendar | 7207–7208 |
| Hindu calendars | |
| - Vikram Samvat | 3503–3504 |
| - Shaka Samvat | 3368–3369 |
| - Kali Yuga | 6547–6548 |
| Holocene calendar | 13447 |
| Igbo calendar | 2447–2448 |
| Iranian calendar | 2825–2826 |
| Islamic calendar | 2912–2913 |
| Japanese calendar | Heisei 1459 (平成１４５９年) |
| Javanese calendar | 3424–3425 |
| Juche calendar | 1536 |
| Julian calendar | Gregorian minus 24 days |
| Korean calendar | 5780 |
| Minguo calendar | ROC 1536 民國1536年 |
| Nanakshahi calendar | 1979 |
| Thai solar calendar | 3990 |
| Unix time | 46609603200–46641139199 |
The year 3447 BC